INDEX TO NEVADA STRATIGRAPHIC UNITS MENTIONED IN NBMG PUBLICATIONS

    This listing of stratigraphic units in Nevada is an updated version of NBMG Open-File Report 87-1. The list includes formation name, type location, age, the USGS lexicon where the formation name appears, and NBMG publications (with page numbers) and maps where mentioned. It has not been edited or checked for completeness or accuracy, and should be considered preliminary. Please submit corrections and additions to the compiler, Dick Meeuwig at dmeeuwig@unr.edu.

    ABBREVIATIONS:

    Geologic Names

    
      Fm   Formation
    
      Ls   Limestone
    
      Ss   Sandstone
    
      Gp   Group
    
      Mbr  Member
    
    

    Type Locations

    
      NE   Northeast Nevada
    
      NC   North-central Nevada
    
      NW   Northwest Nevada
    
      WC   West-central Nevada
    
      C    Central Nevada
    
      EC   East-central Nevada
    
      SE   Southest Nevada
    
      SC   South-central Nevada
    
      SW   Southwest Nevada
    
    
    
      AZ   Arizona
    
      CA   California
    
      ID   Idaho
    
      MT   Montana
    
      OR   Oregon
    
      UT   Utah
    
      WY   Wyoming
    
    

    Age

    
      Cz    Cenozoic        Pz    Paleozoic        Pr Proterozoic
    
      Cz3     Late          Pz3     Late           Z    Late
    
      Cz2     Middle        Pz2     Middle         Y    Middle
    
      Cz1     Early         Pz1     Early          X    Early
    
      Q     Quaternary      P     Permian
    
      Q2      Holocene      P2      Late
    
      Q1      Pleistocene   P1      Early
    
      T     Tertiary        Pa    Pennsylvanian
    
      T5      Pliocene      Pa3     Late
    
      T4      Miocene       Pa2     Middle
    
      T3      Oligocene     Pa1     Early
    
      T2      Eocene        M     Mississippian
    
      T1      Paleocene     M2      Late
    
      Mz    Mesozoic        M1      Early
    
      Mz3     Late          D     Devonian
    
      Mz2     Middle        D3      Late
    
      Mz1     Early         D2      Middle
    
      K     Cretaceous      D1      Early
    
      K2      Late          S     Silurian
    
      K1      Early         S3      Late
    
      J     Jurassic        S2      Middle
    
      J3      Late          S1      Early
    
      J2      Middle        O     Ordovician
    
      J1      Early         O3      Late
    
      Tr    Triassic        O2      Middle
    
      Tr3     Late          O1      Early
    
      Tr2     Middle        Cm    Cambrian
    
      Tr1     Early         Cm3     Late
    
                            Cm2     Middle
    
                            Cm1     Early
    
    

    NOTE: Questionable formation names are preceded by *.


    INDEX OF STRATIGRAPHIC UNITS IN NEVADA

    (USGS lexicons and NBMG publications cited are listed at the end of this file)
    
    
    
    Formation   Type    Location    Age    USGS Lexicon
    
    
    
    Adam Peak Fm NC P1, Pa3 B1350
    
      B72--p. 24
    
      B72a--p. 2
    
      SP4--p. 46, 54
    
    Adam Peak Stock
    
      R40--p. 71
    
    Adobe Range sequence
    
      B101--p. 32, 47, 95
    
    Agort Chert NE O3, O2 B1350
    
      B72a--p. 2
    
      B101--p. 11
    
      SP4--p. 28
    
    Aiken Creek pluton
    
      B88--p. 32
    
      B99B--p. 202, 224-226
    
    Alamo Range Fm EC T4 B1350
    
      B72a--p. 2
    
    Aldrich Station Fm (Wassuk Gp) WC T4 B1200
    
      B75--p. 13
    
      B99a--p. 138
    
      R10--p. 64-66
    
    Alta Andesite WC T4 B1200
    
      B49--p. 57, 68, 70
    
      R10--p. 70
    
      Alta Fm T4
    
      B70--p. 27, 28, 31, 66
    
      B71--p. 7, 10, 12-14
    
      B72--p. 27
    
      B72a--p. 2
    
      B75--p. 11, 12, 34
    
      B91--p. 69
    
      R23--p. 2, 3
    
      R41--p. 32, 34, 37
    
      Maps 4Ag, 4Bg, 4Cg, 5Ag, 59
    
    *Alturas Fm CA T5 B1200 (in NV?)
    
      B70--p. 19, 20
    
    American Ravine Andesite Porphyry WC T4 B1200
    
    Ammonia Tanks Mbr (Timber Mountain Tuff) SC T4 B1350, B1435-a
    
    Anchor Ls (Monte Cristo Gp) SE M2, M1 B1200
    
      B72a--p. 2
    
    Anchor Mbr (Monte Cristo Dolomite) M2, M1
    
      B81--p. 30, 33, 34
    
    Andorno Fm (Auld Lang Syne Gp) NC Tr3 B1200
    
      B72--p. 24
    
      B72a--p. 2
    
    Andrews Mountain Mbr (Campito Fm) Ca M1, Z B1350
    
      B72a--p. 2
    
    Antelope Springs Tuff
    
      B77--p. 21, 32, 35, 41
    
      B92--p. 32, 34, 36, 45, 57, 76, 86, 89
    
      R33--p.121, 123
    
    Antelope Valley Fm
    
      B72--p. 22
    
      B77--p. 9
    
    Antelope Valley Ls (Pogonip Gp) NC O2, O1 B1200
    
      B64--p. 17-19, 59
    
      B72A--p. 2
    
      B73--p. 24
    
      B78--p. 25
    
      B88--p. 10, 12-16, 18, 19
    
      B90--p. 6, 8, 12, 16, 17, 21
    
      B93--p. 21, 48
    
      B99A--p. 46, 48-52, 60, 79
    
      B99B--p. 58, 171, 229
    
      B101--p. 17-19
    
      R20--p. 10
    
      R32--p. 40, 42
    
    Antler Peak Fm
    
      B67--p. 26
    
      R41--p. 65
    
      Antler Peak Ls NC P1, Pa3 B1200
    
      B59--p. 25, 85, 95, 113, 128
    
      B72A--p. 2
    
      B88--p. 23-25, 29, 54, 66
    
      B99A--p. 87, 91
    
      B101--p. 37
    
      R32--p. 46, 47
    
      R33--p. 89, 90
    
      R36--p. 4
    
      R40--p. 15, 18, 24, 73
    
      SP4--p. 46, 48, 49, 54
    
      Map 50
    
    Antler sequence
    
      R32--p. 21, 46
    
      SP4--p. 48
    
      Map 50
    
    Apex fm P1 GNC
    
    Arcturus Fm EC P1 B896
    
      B99A--p. 90
    
      B101--p. 37, 40, 41
    
      R32--p. 27, 30, 57, 60
    
      R40--p. 38
    
      R41--p. 53, 55
    
      Maps 20, 35
    
    Arcturus Gp P1
    
      B72--p. 14, 15
    
      B72A--p. 2
    
      B101--p. 40
    
      R32--p. 30
    
    Arcturus Ls P1
    
      B57--p. 40
    
      B85--p. 13-15, 28, 30, 69, 81, 90
    
      B101--p. 40
    
    Arrow Canyon Fm SE D3 B1350
    
      B72--p. 18
    
      B72A--p. 2
    
    Arrow Canyon Ls D3
    
    Arrowhead Ls SE M2 B896
    
      B72A--p. 2
    
      B81--p. 29
    
    Arrowhead Mbr (Monte Cristo Ls) M2
    
      B72--p. 18
    
      B72A--p. 2
    
    Artesia sequence Map 64
    
    Ashdown Tuff NW T4 B1520
    
    Aubrey Gp AZ P1, Pa3 B896
    
    Augusta Mountain Fm (Star Peak Gp) NC Tr3, Tr2 B1200
    
      B72--p. 25
    
      B72A--p. 2
    
      B83--p. 6, 7, 44
    
      B88--p. 29-31
    
      B89--p. 4, 9, 14-16, 18, 62
    
      B99A--p. 94, 96
    
      SP4--p. 57, 63
    
      Maps 50, 76
    
    Augusta sequence
    
      B83--p. 4
    
      B88--p. 28, 30, 54, 56-58, 86, 97
    
      B99A--p. 141
    
    August Canyon sequence
    
      B72--p. 23
    
      B72A--p. 2
    
      B99A--p. 61
    
    Auld Lang Syne Gp NW J1, Tr3 B1520, B1482-A
    
      B89--p. 4, 9, 19-21, 30, 48
    
      B97--p. 7, 59
    
      B99A--p. 96
    
      R40--p. 5, 8, 11
    
      R41--p. 74, 76, 77
    
      SP4--p. 25, 27
    
    Aura Fm NE O B1350
    
      B60--p. 11, 12, 17, 18, 37, 50
    
      B72--p. 20
    
      B72A--p. 2
    
      B101--p. 20
    
    Austin pluton
    
      B88--p. 32, 91
    
    Aysees Mbr (Antelope Valley Ls) SE O2 B1350
    
      B72A--p. 2
    
    Aztec Granodiorite Cz3, Cz2 GNC
    
    Aztec Ss SE J, Tr B896
    
      B55--p. 8
    
      B62--p. 41-44, 54, 63-65, 83, 84, 86-89, 91, 162, 164, 166, 167
    
      B65--p. 29, 30  
    
     B72--p. 11
    
      B72A--p. 2
    
      B81--p. 22
    
      B99A--p. 97
    
      R18--p. 7
    
      R20--p. 2, 7, 10
    
      R26--p. 6, 15, 17
    
      SP4--p. 60, 62, 64, 67, 69, 73, 76, 79, 80, 83, 84
    
      Map 74
    
    Aztec sequence
    
      SP4--p. 67
    
    Badger Valley Basalt SE T5 B1350
    
      B72A--p. 2
    
    Bailey Creek Mbr (Schoonover Fm) NC Pa1 B1350
    
      B72A--p. 2
    
    Bailey Spring Ls EC Pa1, M2 B896
    
      B72--p. 16
    
      B72A--p. 2
    
      B73--p. 52, 55, 56
    
    Bald Mountain Lake Beds Mbr (Esmeralda Fm) C T5, T4 B896
    
      B72--p. 26
    
      B72A--p. 2
    
      B99A--p. 126
    
    Bald Mountain, tuff of
    
      B99A--p. 114
    
      B100--p. 24
    
    Banbury basalt mbr (Idaho Fm) T5 GNC
    
    Banbury Fm ID T4 B896, B1435-A
    
      B72--p. 20
    
      B72A--p. 2
    
      Map 52
    
    Banbury Volcanics
    
      B101--p. 65
    
    Banded Mountain Mbr (Bonanza King Fm) SE Cm3, Cm2 B1350
    
      B72A--p. 2
    
    Banner Fm NE M2 B1200
    
      B54--p. 116
    
      B67--p. 12-14
    
      B101--p. 28-30, 80, 86, 87, 95, 98
    
      SP4--p. 41-44, 55
    
    Banner Ls M2
    
      B101--p. 29
    
    Barn Hills Mbr (Ely Springs Dolomite) UT O3 B1564
    
    Barton Canyon Mbr (Windfall Fm) EC Cm3 B1200
    
    Bartine Mbr (McColley Canyon Fm) NE D1 B1520
    
      B72--p. 22
    
      B72A--p. 2
    
    Basalt Ridge, basalt of
    
      R19--p. 29, 30, 32
    
    Basco Fm NE O2, O1 B1200
    
      SP4--p. 28
    
    Baseline Ss SE K2, K1 B1457-A
    
      B55--p. 5, 6, 9, 10, 12-14
    
      B62--p. 41-44, 87, 162, 164, 166
    
      B65--p. 30, 245
    
      R18--p. 6
    
      SP4--p. 71, 73, 74, 93
    
    Bastille Ls C S2 B1350
    
    Bastille Ls Mbr (Masket Shale) S2
    
      B72--p. 23
    
      B72A--p. 2
    
      B99A--p. 60, 61
    
    Bates Mountain Tuff C T4 B1520
    
      B85--p. 17, 19-22
    
      B88--p. 33, 39, 43, 44, 50-52, 58, 59
    
      B89--p. 35
    
      B99A--p. 104, 114, 120, 121, 126, 128, 134, 153
    
      B99B--p. 109
    
      R19--p. 36, 37
    
      R41--p. 48, 95
    
      Battle Conglomerate NC Pa2 B1200
    
      Battle Fm Pa2
    
      B59--p. 23, 85, 94, 113
    
      B65--p. 33
    
      B72--p. 24-26
    
      B72A--p. 2
    
      B88--p. 20, 23, 24, 54, 66
    
      B101--p. 37
    
      R32--p. 46-48
    
      R33--p. 89, 90
    
      R36--p. 4, 5, 7
    
      R40--p. 16, 18, 71, 73
    
      R41--p. 65
    
      SP4--p. 36, 46, 48, 49
    
            Map 50
    
      Battleship Wash Fm (Bird Spring Gp) SE M2 B1350
    
      B72A--p. 2
    
      SP4--p. 45
    
    Bauers Ignimbrite Mbr(Condor Canyon Fm) UT T4, T3 B1200
    
      R11--p. 6, 8, 10, 11, 24, 25, 32, 39, 44, 45, 53
    
      B72--p. 16
    
      B72A--p. 2
    
    Bauers Tuff Mbr (Condor Canyon Fm) T4, T3
    
      B99A--p. 111
    
    Bauers Tuff (Quichapa Gp) T4, T3
    
    Bay State Dolomite Mbr (Nevada Fm) C D2 B1200
    
      B64--p. 24-26
    
      B72--p. 22
    
      B72A--p. 2
    
      B73--p. 35
    
      B99A--p. 71, 73, 74
    
      B101--p. 26
    
      Map 20
    
    Beacon Flat Fm NE P1 B1200
    
      B72--p. 21
    
      B72A--p. 2
    
      B101--p. 32, 38, 39, 89
    
      SP4--p. 53
    
      Map 50
    
    Beacon Peak Dolomite Mbr (Nevada Fm) EC D1 B1200
    
      B64--p. 24-26
    
      B72A--p. 2
    
      B85--p. 10
    
      B99A--p. 69, 74-76, 81
    
      B101--p. 26
    
    Bellehelen Lakes, rhyodacite of
    
      B99A--p. 114
    
    Belleville Tuff WC T3 B1564
    
      Maps 63,74
    
    Belmont Fanglomerate EC Q2, Q1 B1200
    
      B57--p. 42, 45, 46, 68, 75, 82
    
      B72--p. 15
    
      B72A--p. 2
    
      B85--p. 84
    
    Belmont pluton
    
      B99A--p. 99, 101
    
      B99B--p. 46-48, 60
    
    Belt Supergroup
    
      SP4--p. 13, 14
    
    Belted Range Tuff C T4 B1350
    
    Benton Spring Gp WC T3 B1564 
    
    Bernice Fm WC Tr3 B1564
    
    Bieroth Andesite NE T2 B1350
    
      B67--p. 21, 22, 30
    
    Big Island Fm NE T4 B1605-A
    
      B101--p. 64-66, 102
    
    Big Pole Fm (Pony Trail Gp) NC J3 B1350
    
    Big Round Valley, tuff of
    
      B99B--p. 166
    
    Big Sand Springs Valley, rhyolite of
    
      B99A--p. 105, 113, 121, 122
    
      B99B--p. 166
    
    Bird Spring Fm SE P1, Pa, M2 B896
    
      B61--p. 38
    
      B62--p. 27, 29-35, 65-67, 69, 70, 75,
    
        76, 78-80, 96, 110, 157, 160
    
      B72--p. 12, 17, 18
    
      B72A--p. 2
    
      B73--p. 49, 52-55, 59
    
      B77--p. 13
    
      B81--p. 25, 28, 32, 34
    
      B85--p. 27
    
      B99A--p. 87, 90
    
      R18--p. 6, 7
    
      R20--p. 10,
    
      R26--p. 15
    
      SP4--p. 45
    
    Bird Spring Gp
    
      B72--p. 12, 17
    
      B72A--p. 2
    
    Black Canyon Latite AZ Cz1, T4 B1200
    
    Black Cap Mountain, basalt of
    
      B92--p. 86
    
    Blackcap Mountain flows T5 GNC
    
    Black Dyke Fm WC P B1564
    
      R42--p. 1
    
      SP4--p. 55
    
      Maps 63, 74
    
    Black Mountain sequence
    
      B101--p. 89, 91
    
    Black Rock Quartzite NE Pa, M B1200
    
      B67--p. 11, 12, 33
    
    Black Rock Summit, tuff of
    
      B99A--p. 113
    
      B99B--p. 166
    
    Blind Spring Fm EC T3 B1350
    
      B99A--p. 104, 108, 109
    
    Bluepoint Ls SE M2 B896
    
      B62--p. 26, 29, 34
    
      B72--p. 12
    
      B72A--p. 3
    
    Blue Sphinx Tuff WC T4, T3 B1564
    
      Maps 60, 77
    
    Bluestone Mine Tuff WC T3 B1564
    
      R27--p. 6, 9, 11, 19-21, 23, 24, 27
    
      Maps 60, 77
    
    Bodie Andesite T5 GNC
    
    Bonanza King Dolomite
    
      B72A--p. 3
    
    Bonanza King Fm CA Cm3,Cm2 B896
    
      B47--p. 44, 45
    
      B62--p. 18-21
    
      B72A--p. 3
    
      B73--p. 19, 22
    
      B77--p. 7, 8, 16, 30, 31, 38
    
      B92--p. 14
    
      B99A--p. 33, 35, 36, 39, 40, 43
    
      B99B--p. 89, 212
    
      R20--p. 10, 24
    
      R26--p. 8, 15
    
      R39--p. 4
    
      SP4--p. 23, 24, 64
    
    Bonita Canyon Fm C T3 B1520
    
      B81--p. 85
    
      B99A--p. 132
    
      B99B--p. 36, 66, 112, 113
    
      Map 38
    
    *Bonneville Fm UT Q1 B1200 (in NV?)
    
      B101--p. 72
    
    Boulder City laccolith
    
      R10--p. 28
    
    Boulder Wash Fm SE Pr B1200
    
    Boulder Wash Gp Pr ?
    
    Bouse Fm AZ T5 B1520
    
    Box Canyon Fm C T3 B1520
    
    Boyer Ranch Fm NW J2, B1520, B1482-A
    
      B89--p. 4, 9, 21, 25, 69, 94
    
      SP4--p. 69, 71
    
      Maps 50,74
    
    Bright Angel Gp
    
      B47--p. 20-22
    
    Bright Angel Fm AZ Cm2, Cm1 B896
    
      B72--p. 12
    
      B72A--p. 3
    
      B73--p. 16
    
      B77--p. 6
    
    Bright Angel Shale (Tonto Gp)
    
      B47--p. 22
    
      B62--p. 14, 16-18, 20
    
    Bristol Pass Ls
    
      B73--p. 46, 49
    
    Broad Canyon Fm C O1, Cm3, Cm2 B1520
    
      B88--p. 84
    
      B92--p. 14
    
      B99A--p. 35
    
    Broad Canyon pluton
    
      B99A--p. 99
    
    Broad Canyon sequence
    
      B88--p. 12, 13, 19, 58
    
      B99A--p. 39, 42, 44
    
      B99B--p. 204
    
      SP4--p. 21, 23, 27
    
    Brock Canyon Fm NC P1, Pa3 B1350
    
      B64--p. 40, 41, 47, 54
    
      B99A--p. 87
    
      R41--p. 103
    
    Brougher Dacite C T5 B896
    
      B72--p. 26
    
      B72A--p. 3
    
      B78--p. 34, 36, 37
    
      B92--p. 76
    
      B99A--p. 135, 137, 139
    
      B99B--p. 190
    
      R19--p. 10, 12, 13, 44-47
    
    Brougher Rhyolite
    
      B92--p. 50, 55, 57, 60, 64, 65, 67, 69, 72,
    
        73, 76,78, 86, 89, 91, 99, 105, 111, 115, 125, 126
    
      R33--p. 121-125
    
    Buckskin Mountain Fm NC P1 B1200
    
      B72--p. 21
    
      B72A--p. 3
    
      B101--p. 32, 36, 38, 39, 89, 90
    
      SP4--p. 48, 53
    
      Map 50
    
    Buffington Fm SE Cm3 B1350
    
    Bullfrog Mbr (Crater Flat Tuff) SC T4 B1564
    
    Bullion Dolomite (Monte Cristo Gp) SE M2 B896
    
      B81--p. 31, 34
    
    Bullion Dolomite Mbr (Monte Cristo Ls) M2
    
    Bullion Ls (Monte Cristo Gp)
    
      B72A--p. 3
    
      B81--p. 29
    
    Bullion Mbr (Monte Cristo Dolomite) M2
    
    Bullionville granodiorite K GNC
    
    Bull Run quartzite
    
      B60--p. 13
    
    Bullwhacker Mbr (Windfall Fm) EC Cm3 B1200
    
      B72--p. 22
    
      B72A--p. 3
    
      B101--p. 16
    
    Bunejug Fm WC Q1, T5 B1350
    
      B83--p. 41
    
    Burns Creek sequence
    
      B101--p. 20, 22
    
    Burnt Canyon Ls EC Cm2 B1200
    
      B47--p. 36-38
    
      B72--p. 7, 8, 17
    
      B72A--p. 3
    
    Burnt Canyon Mbr (Highland Peak Fm) Cm2
    
      B72--p. 17
    
    Burrows Dolomite EC Cm2 B1520
    
      B47--p. 33
    
    Burrows Ls Cm2
    
      B47--p. 36
    
      B72--p. 8
    
      B72A--p. 3
    
    Busby Quartzite UT Cm1 B896
    
      B47--p. 28-32
    
    Butte fm P1 GNC
    
    Butte Mountain fm P1 GNC
    
    By-Day Mbr (Eureka Valley Tuff) CA T4 B1520
    
    Byers Canyon Fm WC Tr B1564
    
    Cadiz Fm CA Cm2, Cm1 B896
    
      B47--p. 23, 32
    
      B72--p. 12
    
      B72A--p. 3
    
      B77--p. 6
    
    Caesar Canyon Ls C O2 B1200
    
      B72--p. 22
    
      B72A--p. 3
    
      B88--p. 15
    
      B99A--p. 47, 51, 59, 62
    
      B99B--p. 158
    
    Caetano Tuff NC T3 B1350
    
      B88--p. 33, 35, 39, 40, 48-51, 55, 56, 59
    
      B89--p. 31
    
      R32--p. 47
    
      R33--p. 89, 90, 98
    
      R41--p. 60
    
    Calloway Well Fm EC T3 B1350
    
      B85--p. 19
    
      B99A--p. 106, 108, 109
    
      B99B--p. 36
    
    Callville Fm
    
      B72A--p. 3
    
    Callville Ls SE P1, Pa B896
    
      B62--p. 29, 30, 34, 78, 83, 88, 91
    
      B63--p. 45-47
    
      B72--p. 12
    
      B72A--p. 3
    
      R18--p. 8
    
    Campito Fm CA Cm1, Z B896
    
      B47--p. 19
    
      B72A--p. 3
    
      B78--p. 10, 11, 16, 22, 26, 45, 46, 48-50, 52, 70
    
      B90--p. 16
    
      B92--p. 13, 102
    
      B99A--p. 36
    
      SP4--p. 19
    
    Campito Ss Cm1, Z
    
    Candelaria Fm C Tr1 B896
    
      B56--p. 19, 21-24, 40, 48, 49, 52, 61
    
      B58--p. 21
    
      B72A--p. 3
    
      B78--p. 5, 27, 51, 57
    
      B81--p. 84
    
      B99A--p. 93
    
      B99B--p. 18, 144, 145
    
      SP4--p. 55, 59, 60, 63-65
    
      Map 57
    
    Candelaria Junction Tuff WC T3 B1564
    
    Cane Creek pluton
    
      B88--p. 33
    
    Cane Spring Fm NC Tr3 B1200
    
      B72A--p. 3
    
      B83--p. 7, 31, 44
    
      B89--p. 4,9,14-16, 18, 20, 62
    
      B99A--p. 96
    
      R40--p. 8
    
      SP4--p. 63
    
      Map 50
    
    Canon Rhyolite NW T4 B1200
    
      B70--p. 10, 13-15, 22, 47
    
    Cap Winn Mbr (Schoonover Fm) WC M2 B896
    
      B72A--p. 3
    
    Carbon Ridge Fm (Arcturus Gp) EC P1 B1200
    
      B64--p. 39, 40, 51, 57
    
      B72--p. 22
    
      B72A--p. 3
    
      B73--p. 59
    
      B85--p. 13, 14, 16, 27, 28
    
      R32--p. 25
    
      R40--p. 32
    
      SP4--p. 48, 54
    
      Map 50
    
    Carbon Ridge Gp P1
    
      B72--p. 22
    
    Carlin Canyon Fm NE P2, P1 B1200
    
      B72A--p. 3
    
      B101--p. 32, 38, 39, 49, 63, 89, 90
    
      SP4--p. 48, 53
    
      Map 50
    
    Carlin Fm NE T5 B1200
    
      B64--p. 42
    
      B72A--p. 3
    
      R32--p. 18
    
      R40--p. 66, 67
    
    Carlin sequence
    
      B101--p. 32, 35, 38, 39, 85, 89
    
    Carrara Fm SC Cm2, Cm1 B1350
    
      B62--p. 14, 18, 73
    
      B72--p. 11
    
      B72A--p. 3
    
      B77--p. 6, 17, 31, 38
    
      B92--p. 13
    
      B99A--p. 33, 35-37
    
      B99B--p. 46-49, 89, 144
    
      R20--p. 10
    
      SP4--p. 23
    
    Carseley Creek pluton
    
      B88--p. 32
    
    Carson Range flow mbr (Lousetown Fm) Q1, T5 GNC
    
    Carter Spring mbr (Chainman Shale) M2 GNC
    
    Cat Canyon mbr (Timber Mountain Tuff) T4 GNC
    
    Cat Canyon, tuff of
    
      B77--p. 24
    
    Catlin Mbr (Windfall Fm) EC Cm3 B1200
    
      B72--p. 22
    
      B72A--p. 3
    
      B99A--p. 40
    
      B101--p. 16
    
    Cave Valley Fm EC T4, T5 B1350
    
      B72--p. 14
    
      B72A--p. 3
    
      B73--p. 78
    
    Cedar Mountain granodiorite T4 GNC
    
    Cedar Mountain beds (Esmeralda Fm) T5 GNC
    
    Celta fm T GNC
    
    Chainman Fm EC M2, M1 B896
    
      B72--p. 8, 14, 15, 18
    
      B72A--p. 3
    
    Chainman Shale M2, M1
    
      B57--p. 31, 37, 38
    
      B62--p. 28
    
      B64--p. 36, 38, 49-51, 57, 58
    
      B72--p. 14-18, 21, 22
    
      B72A--p. 3
    
      B73--p. 44, 48-51
    
      B77--p. 13
    
      B85--p. 11-13, 29, 59, 70, 72, 74, 84, 90
    
      B99A--p. 79, 80, 83-85, 148-151
    
      B99B--p. 37, 79, 80, 228
    
      B101--p. 13, 28-34, 38, 44, 83, 86, 88-91, 95, 98, 101
    
      R18--p. 8, 9, 15, 20, 21, 35
    
      R29--p. 8, 10-12, 14,15, 17
    
      R32--p. 12, 15, 24, 26, 27, 30, 56, 57, 60, 61
    
      R36--p. 14, 16-18, 20
    
      R40--p. 32, 38-41, 71, 73, 85, 87, 88
    
      R41--p. 49, 51, 53, 55, 56
    
      SP4--p. 41, 43
    
      Maps 20, 35, 50
    
    Charcoal Canyon Fm (Clipper Canyon Gp) C O1 B1200
    
      B72--p. 23
    
      B72A--p. 3
    
    Charcoal Ovens Tuff EC T3 B1564
    
      B85--p. 19, 20, 91
    
    Chellis Fm
    
      B101--p. 44, 45
    
    Chellis Ls NC S B1350
    
      B60--p. 12, 17-19
    
      B72--p. 20
    
      B72A--p. 3
    
      SP4--p. 31, 32
    
    Chemehuevi Fm AZ Q B896
    
      B62--p. 53, 54
    
    Cherry Canyon Shist Pr GNC
    
    Chicken Creek Fm NE T3, T2 B1350
    
      R10--p. 59
    
    China Mountain Fm (Koipato Gp) NC Tr1 B1200
    
      B72--p. 25
    
      B72A--p. 3
    
      B83--p. 6
    
      B88--p. 29
    
      B89--p. 11, 13, 17, 61, 73
    
      SP4--p. 57
    
    Chinle Fm AZ Tr3 B896
    
      B62--p. 38-41, 43, 46, 54, 58, 65, 69, 83, 87, 91, 152, 154
    
      B65--p. 29, 30
    
      B72A--p. 3
    
      B73--p. 63-65
    
      B81--p. 20-23
    
      B101--p. 49, 50
    
      R18--P. 7
    
      R20--P. 2, 7, 10
    
      R26--P. 15, 17
    
      R33--P. 19
    
      SP4--p. 60, 62, 64, 67, 79
    
    Chisholm Fm EC Cm2 B896
    
      B72--p. 17
    
      B72A--p. 3
    
    Chisholm Shale Cm2
    
      B47--p. 32, 34
    
      B62--p. 14, 16-18
    
      B63--p. 37, 40, 41
    
      B72A--p. 3
    
      B73--p. 14-16, 26, 81
    
      R29--p. 6
    
    Chispa Andesite T4 B1200
    
      B77--p. 20
    
      B78--p. 35
    
      R19--p. 51, 54, 59, 60
    
      R33--p. 78, 79, 84
    
    Chispa Hills, tuff of
    
      R19--p. 51, 54, 59, 60
    
      R33--p. 79, 83
    
    Chloropagus Fm NW T5, T4 B896
    
      B70--p. 28-32, 72
    
      B71--p. 7, 10, 12, 14-16, 24
    
      B75--p. 14
    
      B83--p. 23, 27, 28, 40
    
      B97--p. 15, 16, 21-26, 33-40, 59-63, 65, 66
    
      R40--p. 3
    
      R41--p. 36
    
    Chokecherry Canyon breccia O GNC
    
    Churchill Canyon sequence Map 64
    
    Circle Creek Rhyolite NE T5 B1520
    
      B101--p. 67, 102
    
    Clan Alpine sequence
    
      SP4--p. 66
    
    Clan Alpine Volcanics WC T4 B1200
    
    Clark Mountain flow mbr (Lousetown Fm) Q1, T5 GNC
    
    Clarks Spring Mbr (Secret Canyon Shale) EC Cm2 B1200
    
      B72A--p. 4
    
      R40--p. 81
    
    Clear Creek sequence
    
      B88--p. 5
    
    Cleft, rhyolite of the
    
      B92--p. 58-60, 62, 91
    
      R33--p. 122
    
    Clipper Canyon Gp C O B1350
    
      B72--p. 23
    
      B72A--p. 4
    
      B99A--p. 47, 58
    
      B99B--p. 1581
    
    Clipper Canyon sequence
    
      SP4--p. 28
    
    Clipper Gap pluton
    
      B99A--p. 99
    
      B99B--p. 158, 159
    
    Clipper Gap, tuff of
    
      B99A--p. 120, 126, 128, 134
    
    Coaldale chert O GNC
    
    Coal Valley Fm WC T4 B1200, 1435-A
    
      B70--p. 36-39, 53
    
      B71--p. 10, 20, 24
    
      B75--p. 13, 41
    
      R10--p. 66
    
      R19--p. 69
    
      SP4--p. 89
    
    Coal Valley Fm (Wassuk Gp) T4
    
      B99A--p. 138
    
      R10--p. 72
    
      R23--p. 2
    
    Cockalorum Wash Fm EC D2 B1520
    
      B99A--p. 62, 67, 78, 79, 81, 82, 152-154
    
      B99B--p. 212, 213
    
      SP4--p. 34, 35, 40
    
    Coconino Ss (Aubrey Gp) AZ P1 B896
    
      B62--p. 35-37
    
      B63--p. 47-49
    
      B72A--p. 4
    
      B73--p. 61, 62
    
      R18--p. 7, 8
    
      R26--p. 15
    
    Coffeepot stock
    
      B101--p. 80
    
    Coils Creek Mbr (McColley Canyon Fm) NE D1 B1520
    
      B72--p. 22
    
      B72A--p. 4
    
      B90--p. 7
    
    Coldspring Mountain, rhyolite of
    
      B101--p. 69
    
    Columbia stock
    
      B60--p. 40-42, 50, 52
    
      B101--p. 74
    
    Combined Metals Mbr (Pioche Shale) EC Cm1 B896
    
      B85--p. 58, 62
    
      B99A--p. 37
    
      B99B--p. 144
    
    Combs Canyon Dolomite Mbr (Hanson Creek Fm) C S B1564
    
    Comet Shale EC Cm2 B1200
    
    Comus Fm NC O2, O1 B1200
    
      B59--p. 15, 95, 113
    
      B72--p. 24
    
      B72A--p. 4
    
      B92--p. 14
    
      B98--p. 15
    
      R40--p. 14, 52-54
    
      SP4--p. 27, 28, 39, 40
    
      Map 50
    
    Condor Canyon Fm (Quichapa Gp) EC T4, T3 B1350
    
      B99A--p. 111
    
      R11--p. 8, 10, 11, 23, 24, 54
    
    Condor Fm EC Cm2 B1200
    
      B72--p. 8
    
      B72A--p. 4
    
    Condor Ls
    
      B72A--p. 4
    
    Condor Mbr (Highland Peak Fm) Cm2
    
    Condor Mbr (Swasey Fm) Cm2
    
      B47--p.39
    
    Congress Canyon Fm (Star Peak Gp) NW T3, T2 B1564
    
    Contact pluton
    
      B101--p. 75, 89
    
    Cooper Peak Dolomite NC D1 B1200
    
    Copenhagen Fm C O2 B1200
    
      B72--p. 22
    
      B72A--p. 4
    
      B88--p. 14-16, 18
    
      B99A--p. 46, 49-53, 59, 60
    
      B99B--p. 171
    
    Copper Canyon quartz monzonite porphyry T2 GNC
    
    Copper King Shale
    
      B67--p. 12
    
    Copper Mountain quartzite Pz2 GNC
    
    Corkscrew Quartzite Cm1 (name abandoned)
    
      B72--p. 19
    
      B72A--p. 4
    
      B77--p. 6
    
      B99A--p. 36
    
    Corral Creek quartz monzonite K GNC
    
    Cornucopia, phenoandesite of
    
      B101--p. 61
    
    Corset Spring Shale EC Cm3 B1200
    
      B72A--p. 4
    
      B73--p. 20
    
      B85--p. 4, 7, 58
    
      B99A--p. 40
    
      B101--p. 15
    
      R32--p. 30
    
    Cotton Creek pluton
    
      B101--p. 76
    
    Cottonwood Canyon, tuff of
    
      B99A--p. 112, 113
    
    Cottonwood Creek phyllite Cm1 GNC
    
    Cottonwood granodiorite stock
    
      B99B--p. 101-105
    
    Cottonwood Wash Tuff Mbr (Needles Range Fm) UT T3 B1520
    
    Cougar Point Fm (Idavada Volcanics) NE T4 B1350
    
      B72A--p. 4
    
    Cougar Point Welded Tuff NE T4, M B1457-A
    
      B67--p. 21
    
      B72--p. 20
    
      B81--p. 41
    
      B101--p. 63-66, 71, 102
    
      SP4--p. 102
    
    Cove Camp syenodiorite K GNC
    
    Cove Mountain Fm UT T4 B1200
    
    Crane Canyon sequence
    
      B81--p. 64
    
      B88--p. 11-13, 58
    
      B99A--p. 39, 42, 44, 45
    
      B99B--p. 224, 226
    
      SP4--p. 21
    
    Crater Flat Tuff SC T4 B1564, B1435-A
    
      R39--p. 2
    
    Crested Wheat Ridge, tuff of
    
      B99A--p. 118, 119
    
    Crosby Fm NE Pz2 B1350
    
    Crystal Pass Ls SE D3 B896
    
      B72--p. 11
    
      B72A--p. 4
    
    Crystal Pass Mbr (Sultan Ls) D3
    
      B65--p. 218
    
      B72A--p. 4
    
    Crystal Peak Dolomite UT O2 B1200
    
      B72--p. 7, 8
    
      B72A--p. 4
    
      B85--p. 8
    
      B99A--p. 50
    
      B101--p. 18, 20
    
      R32--p. 30
    
    Crystal tuff T4 GNC
    
      Maps 1Ag, 63
    
    Currant stock
    
      B99B--p. 81
    
    Currant Tuff EC T3 B1200, 1457-A
    
      B65--p. 222
    
      B72--p. 16
    
      B72A--p. 4
    
      B99A--p. 108, 109
    
      B99B--p. 34
    
      R11--p. 9, 11
    
    Dale Canyon Fm EC M B1520
    
    Dam breccia T GNC
    
    Danger Point Tuff NE T4 B1350
    
      B72--p. 20
    
      B72A--p. 4
    
      B101--p. 71
    
    Dardanelles Fm (Stanislaus Gp) CA T4 B1350
    
    Darrough Felsite C Cz2 B1200
    
      B72A--p. 4
    
      B92--p. 19
    
      B99A--p. 101, 105, 129, 131, 132, 157
    
      B99B--p. 89, 124, 197, 202, 203, 209
    
      R19--p. 4
    
    Davidson Granodiorite WC T4 B1200
    
      B49--p. 56, 57
    
      B70--p. 31
    
    Dawn Ls (Monte Cristo Gp) S M1 B896
    
      B72A--p. 4
    
    Dawn Mbr (Monte Cristo Ls)
    
    *Daylight Fm Cm1
    
      B72--p. 19
    
      B72A--p. 4
    
      B77--p. 6
    
    Dead Horse Tuff NE T2 B1200
    
      B72--p. 20
    
      B72A--p. 4
    
      B101--p. 54, 100
    
      R10--p. 60
    
    Decathon Dolomite EC S B1200
    
      B72A--p. 4
    
      B73--p. 31
    
    Deep Creek stock
    
      B67--p. 18-21, 28, 30
    
    Deep Spring Fm CA Z B896
    
      B72A--p. 4
    
      B78--p. 5, 9-11, 23, 44-46, 48-50, 53, 69, 70
    
      B84--p. 13, 20
    
      B92--p. 12, 24, 26, 44, 102, 133
    
      SP4--p. 19
    
    Deer Park Andesite EC Q B1350
    
      B99A--p. 108, 111
    
    Denay Ls C D2 B1482-A
    
    Denay Ls (Nevada Gp) NE D2 B1350
    
      B64--p. 27
    
    Desert Peak Fm WC T4 B1200
    
      B70--p. 31, 32
    
      B71--p. 7, 10, 16-19, 24
    
      B83--p. 27, 28
    
      B89--p. 31 B97--p. 15, 16, 21, 31, 59-63, 65, 66
    
      R29--p. 6
    
    Desert Range Ls Mbr (Carrara Fm) SE Cm2 B1564
    
    Desert Valley Fm SE Cm3 B1350
    
      B72A--p. 4
    
      B73--p. 21, 22
    
    Devils Gate Fm EC D3, D2 B1200
    
      B45--p. 10
    
      B72A--p. 4
    
      B73--p. 40, 42
    
      B101--p. 26, 90
    
    Devils Gate Ls D3, D2
    
      B64--p. 23, 27-30, 51, 55-57, 91
    
      B72A--p. 4
    
      B77--p. 11-13, 39
    
      B85--p. 10, 11
    
      B90--p. 6, 7, 9, 14, 20, 21
    
      B99A--p. 62, 68, 73, 75-77, 81, 82, 86, 151, 152
    
      B99B--p. 162
    
      B101--p. 13, 26, 27, 34, 78, 89
    
      R32--p. 24
    
      R40--p. 40, 41, 71, 85-88, 98, 99, 102
    
      R41--p. 49, 51, 56
    
      SP4--p. 34
    
      Maps 20, 50
    
    Diablo Fm WC P2, P1 B1200
    
      B56--p. 18-21, 48, 49
    
      B58--p. 15
    
      B72--p. 26, 27
    
      B72A--p. 4
    
      B78--p. 5, 26, 27, 51, 57
    
      B81--p. 54
    
      B99A--p. 44, 87, 90-93, 141, 154, 156
    
      B99B--p. 18, 82, 83, 125, 144, 145, 197, 202,
    
         203, 209, 212
    
      SP4--p. 43, 48, 51, 54, 65
    
    Diablo sequence 
    
      B88--p. 5, 27-28
    
    Diamond A Fm NE P, Pa B1350
    
      B67--p. 11-15, 18, 20, 26, 29, 30, 34
    
      B72--p. 19
    
      B72A--p. 4
    
      B101--p. 30, 95
    
    Diamond King Mbr (Esmeralda Fm) C T4 B896
    
      B72--p. 26
    
      B72A--p. 4
    
      B99A--p. 126
    
      B100--p. 23
    
    Diamond Peak Conglomerate
    
      B101--p. 35
    
    Diamond Peak Fm EC Pa1, M2 B896
    
      B57--p. 7, 9, 33, 37, 38, 40, 58-61, 77, 81, 111, 112
    
      B62--p. 35
    
      B64--p. 36, 39, 49, 50, 57, 58
    
      B72--p. 8, 21
    
      B72A--p. 4
    
      B73--p. 53
    
      B77--p. 12, 13
    
      B85--p. 11-14, 63
    
      B88--p. 54
    
      B99A--p. 83-85, 151, 152
    
      B101--p. 28, 31-35, 38, 44, 83, 84, 87-91, 95, 100, 101
    
      R29--p. 10, 13, 16-18
    
      R32--p. 17, 23, 25
    
      R40--p. 19, 23, 24, 32, 40, 71, 73
    
      R41--p. 49, 51, 56
    
      SP4--p. 41, 43, 55
    
      Maps 20, 50
    
    Diamond Peak Quartzite
    
      B57--p. 37
    
      B72A--p. 4
    
    Diamond Peak series
    
      B72A--p. 4
    
      Diana Ls C S2 B1200
    
      B72--p. 23
    
      B72A--p. 4
    
      B99A--p. 59, 60, 62
    
      B99B--p. 158
    
    *Dinwoody Fm WY Tr1 B896 (in NV?)
    
      B72A--p. 4
    
      B101--p. 32, 48, 49, 90, 91
    
    Divide Andesite C T5 B896
    
      B78--p. 37, 65
    
      B92--p. 50, 57, 70-73,76, 78, 89, 91, 105, 126, 127
    
      B99A--p. 128
    
      R33--p. 122, 124
    
    Dixie Valley Fm NC Tr2, Tr1 B1200, B1482-A
    
      B72--p. 25
    
      B72A--p. 4
    
      B83--p. 5, 6
    
      B88--p. 28
    
      B89--p. 3, 9, 13, 14, 18
    
      SP4--p. 63
    
      Map 50
    
    Dobbin Summit, limestone of
    
      B99A--p. 83, 84
    
    Dolly Varden stock
    
      R10--p. 34
    
    Dolly Varden volcanics T3 GNC
    
    Dome Fm UT Cm2 B896 
    
      B72A--p. 4
    
      Dome Ls Cm2
    
      B47--p. 38, 39
    
      B72A--p. 4
    
    *Dominion Fm (Pogonip Gp)
    
      B99A--p. 46
    
    Donner Lake Till CA Q1 B1350
    
      B94--p. 12
    
    Donovan Peak, volcanics of
    
      B92--p. 45, 50, 72, 76, 78, 86, 89, 91, 105, 126
    
      R33--p. 122, 124
    
    Dorsey Creek Mbr (Schoonover Fm) NW M1 B1350
    
      B72--p. 20
    
      B72A--p. 4
    
    Double Spring Fm WC K1, J3 B1350
    
      B75--p. 6
    
      SP4--p. 66
    
    Dry Creek, tuff of
    
      B99A--p. 124
    
    Dry Lake Mbr (Thirsty Canyon Tuff) C T4 B1350
    
      B72--p. 18
    
      B72A--p. 4
    
    Duffer Peak Granodiorite NW K2 B1520
    
    Dunderberg Fm EC Cm3 B896
    
      B72A--p. 4
    
    Dunderberg Shale Cm3 
    
      B57--p. 9, 10, 13-17, 78, 79
    
      B62--p. 19, 80
    
      B64--p. 7, 1-16, 18, 83
    
      B72--p. 8
    
      B72A--p. 4
    
      B73--p. 18, 20, 23, 26
    
      B77--p. 8
    
      B85--p. 4, 7, 45, 49
    
      B88--p. 10
    
      B93--p. 34
    
      B99A--p. 33, 37-41, 154
    
      B99B--p. 213
    
      B101--p. 15-17, 78
    
      R10--p. 76
    
      R32--p. 30, 52
    
      R40--p. 81-83
    
      R41--p. 56
    
      SP4--p. 23, 25
    
      Maps 35, 50
    
    Dunderberg Shale Mbr (Nopah Fm) Cm3
    
    Dun Glen Fm (Auld Lang Syne Gp) NC Tr3 B1200
    
      B59--p. 44, 129
    
      B72--p. 24
    
      B72A--p. 4
    
      B89--p. 4, 19, 20, 21, 48
    
      B99A--p. 96
    
      SP4--p. 66
    
    Dunlap Fm C J1 B896
    
      B58--p. 26-28
    
      B61--p. 123
    
      B65--p. 29
    
      B72--p. 23
    
      B72A--p. 4
    
      B74--p. 7, 8
    
      B78--p. 5, 27, 28
    
      B99A--p. 32, 92, 95-98, 141, 157
    
      B99B--p. 35, 72, 73, 76, 92, 95, 101, 199, 218, 222
    
      SP4--p. 55, 63, 66, 67, 69, 71, 76
    
      Maps 63, 74
    
    Dyer Canyon Fm WC Tr B1564
    
    Dyer pluton B78--p. 28
    
    Dyke Canyon mbr (Happy Creek Volcanics) P GNC
    
    Eagles House Rhyolite WC T5, T4 B1350
    
    Eagle Mountain Shale Mbr (Carrara Fm) CA Cm1 B1564
    
      B83--p. 41
    
    Eastside sequence
    
      B99A--p. 39, 42, 44, 46, 51
    
    Echo Shale Mbr (Carrara Fm) CA Cm1 B1564
    
    Edgemont Fm NC Cm2, Cm1 B1350
    
      B60--p. 12, 14-16
    
      B72--p. 20
    
      B72A--p. 5
    
      B101--p. 16
    
    Edna Mountain Fm NC P1 B1200
    
      B59--p. 30, 94, 96, 129
    
      B72A--p. 5
    
      B88--p. 23, 54, 66
    
      B99A--p. 91
    
      B101--p. 32, 45-47, 84-88
    
      R32--p. 46, 47
    
      R33--p. 89
    
      R40--p. 18, 73
    
      R41--p. 65, 67
    
      SP4--p. 48, 54
    
      Map 50
    
    Edwards Creek Tuff C T3 B1520
    
      B88--p. 38, 41, 50
    
    Eetza Fm WC Q1 B1350
    
      B89--p. 39
    
      B94--p. 12
    
      R9--p. 9-13
    
      R29--p. 6
    
      Map 76
    
    Elder Ss NC S B1200
    
      B88--p. 22, 78
    
      R40--p. 16, 19
    
      R41--p. 61
    
      SP4--p. 32
    
      Map 50
    
    Eldorado Dolomite EC Cm2 B896
    
      B64--p. 7, 9, 12, 13, 79, 84
    
      B72A--p. 5
    
      B85--p. 4, 6, 7
    
      B88--p. 11
    
      B101--p. 15
    
      R41--p. 51
    
      SP4--p. 23
    
      Map 50
    
    Eldorado Fm
    
      B72A--p. 5
    
      Map 35
    
    Eldorado Ls Cm2
    
      B85--p. 4, 54
    
      B99A--p. 37
    
      B99B--p. 192, 194, 195
    
    Eleana Fm SC M2, D3 B1200
    
      B62--p. 35
    
      B72--p. 18
    
      B72A--p. 5
    
      B73--p. 49, 53, 65
    
      B77--p. 12-14
    
      B99A--p. 62, 68, 82-85, 123, 152, 154
    
      B99B--p. 169, 212, 213
    
      R20--p. 7, 12
    
      SP4--p. 41, 43
    
    Elko Fm C T3, T2 B1435-A
    
      B101--p. 54, 55, 99
    
      R32--p. 16, 17
    
      SP4--p. 89, 105
    
    Ely Fm
    
      B54--p. 11
    
      B72A--p. 5
    
      R40--p. 19
    
    Ely Gp EC P1, Pa, M2 B896
    
      B72--p. 7, 14, 16, 21
    
      B72A--p. 5
    
      R32--p. 30
    
      Map 20
    
    Ely Ls EC P1, Pa, M2 B896
    
      B57--p. 9, 33, 37-40, 42, 45, 57, 59, 61, 76, 77, 112
    
      B61--p. 229, 230, 233
    
      B64--p. 36, 38, 39, 51, 57
    
      B72--p. 7, 8, 14-16
    
      B72A--p. 5
    
      B73--p. 52, 55, 56, 74
    
      B85--p. 11-14, 27, 28, 30, 51, 63, 72-74, 78, 81, 84
    
      B99A--p. 83, 86, 87, 89, 145, 149, 150
    
      B99B--p. 8, 9, 37
    
      B101--p. 31-37, 40, 43, 98, 101
    
      R18--p. 20, 35, 36
    
      R29--p. 8, 10-12, 14, 16, 17
    
      R32--p. 25, 26, 30, 57, 60
    
      R33--p. 127, 139
    
      R36--p. 16, 17
    
      R40--p. 36, 38-40
    
      R41--p. 53, 55
    
      Maps 20, 35, 50
    
    Ely Springs Dolomite EC O3, O2 B896
    
      B62--p. 22-24, 72, 78
    
      B72--p. 12, 17-19
    
      B72A--p. 5
    
      B73--p. 21, 28-30
    
      B77--p. 10, 11
    
      B81--p. 68
    
      B99A--p. 46, 47, 51-58, 149
    
      B99B--p. 86
    
      B101--p. 19-21, 80
    
      R20--p. 10
    
      R32--p. 30, 31
    
      SP4--p. 25, 27, 28, 31
    
      Map 50
    
    Emigrant Fm C Cm3, Cm2 B896
    
      B72A--p. 5
    
      B77--p. 5, 7
    
      B78--p. 5, 18-22, 44, 45, 48-53, 61, 65, 69, 70
    
      B92--p. 13, 14, 28, 86, 100, 102, 131, 132, 135
    
      B99A--p. 39, 43
    
      R19--p. 21
    
      SP4--p. 17, 20, 23, 40
    
    Emigrant Gap mafic complex Cz, K GNC
    
    Emigrant Pass Mbr (Carrara Fm) CA Cm1 B1564
    
    Emigrant Springs Ls EC Cm3, Cm2 B1350
    
      B72A--p. 5
    
      B73--p. 21
    
      B85--p. 6, 7
    
      B99A--p. 38
    
    Enright Hill pluton
    
      B101--p. 74
    
      Erie tuff 
    
      B81--p. 23, 25
    
    Esmeralda Fm C T5, T4 B896
    
      B50--p. 5
    
      B58--p. 45
    
      B65--p. 31, 189, 191
    
      B72--p. 23, 26, 27
    
      B72A--p. 5
    
      B76--p. 20, 24
    
      B78--p. 32-34, 37, 38
    
      B81--p. 47
    
      B87--p. 31
    
      B88--p. 48
    
      B92--p. 49, 62, 116
    
      B99A--p. 126-128, 136-138
    
      B99B--p. 27, 124, 148
    
      B100--p. 23
    
      R10--p. 61, 62, 676
    
      R19--p. 69
    
      R20--p. 7
    
      SP4--p. 89
    
    Espina Breccia C T4 B896
    
      R19--p. 18, 51, 54, 57, 59
    
      R33--p. 79, 84
    
    Etchart Fm
    
      B72--p. 24
    
      B72A--p. 5
    
    Etchart Ls NC P1, Pa3, Pa2 B1350
    
      SP4--p. 46, 54
    
    Eureka Canyon Tuff WC T3 B1564
    
      Maps 1Ag, 59, 60, 64
    
    Eureka Fm
    
      B54--p. 10
    
    Eureka Gp
    
      B99A--p. 49
    
    Eureka Quartzite EC O3, O2 B896
    
      B50--p. 41, 213
    
      B55-p. 7, 11, 12, 21, 22
    
      B57--p. 9, 16, 23, 24, 27, 61, 62, 79, 80,
    
           96, 97, 103-15
    
      B62--p. 21-23, 72, 75, 78, 162
    
      B64--p. 17-20, 25, 49, 50, 54, 56, 58, 72, 90, 92, 112
    
      B72--p. 8, 12, 18-22
    
      B72A--p. 5
    
      B73--p. 21, 24, 27, 28, 30
    
      B77--p. 9, 10
    
      B81--p. 56
    
      B85--p. 8, 9, 52, 85
    
      B88--p. 11, 12, 15, 16, 18, 53, 78
    
      B90--p. 6-9, 12, 15, 16, 18, 21
    
      B93--p. 21
    
      B99A--p. 46-60, 66, 123, 149, 152
    
      B99B--p. 35, 192, 213
    
      B101--p. 17-21, 80, 91, 101
    
      R18--p. 20, 21
    
      R20--p. 7, 10
    
      R32--p. 15, 29, 31, 40, 42
    
      R40--p. 28, 31, 32, 40, 41, 57, 59
    
      R41--p. 49, 44, 56, 58, 60
    
      SP4--p. 25, 27, 28, 36
    
      Maps 35, 50
    
    Eureka Valley Mbr (Stanislaus Fm) CA T4 B1350
    
    Eureka Valley Tuff (Stanislaus Gp) T4
    
    Excelsior Fm Tr
    
      B50--p. 44, 156
    
      B58--p. 15
    
      B61--p. 66, 118, 120
    
      B65--p. 27
    
      B72--p. 27
    
      B72A--p. 5
    
      B74--p. 4, 5, 8-11
    
      B78--p. 5, 27, 28, 53, 56, 65
    
      B81--p. 79, 83, 86
    
      B99A--p. 92, 94, 95, 159, 160
    
      B99B--p. 13, 35, 92, 95, 97, 129-131, 135, 181
    
      R10--p. 45, 46
    
      SP4--p. 50
    
    Extension Breccia C T B896
    
      B50--p. 172
    
      B92--p. 46, 49, 91, 111
    
      R19--p. 43, 46
    
      R33--p. 123, 124
    
    Fallon Fm WC Q2 B1350
    
      B94--p. 12
    
      R9--p. 19, 20
    
    Farrel Canyon Fm NC P, Pa B1350
    
      B72--p. 24
    
      B72A--p. 5
    
      SP4--p. 50, 54, 59
    
      Map 50
    
    Favret Fm NC Tr2 B1200
    
      B72--p. 25
    
      B72A--p. 5
    
      B83--p. 6
    
      B88--p. 28
    
      B89--p. 3, 9, 14, 16, 18, 19
    
      SP4--p. 63
    
      Map 50
    
    Ferguson Mountain Fm EC P1, Pa3 B1200
    
      B72--p. 7, 8, 21
    
      B72A--p. 5
    
      B101--p. 32, 35-40, 101
    
    Ferguson Springs Fm (now called Ferguson Mountain Fm)
    
      B72--p. 7
    
      B72A--p. 5
    
      B101--p. 36, 37, 39
    
    Fernley fm T GNC
    
    Fillmore fm O1 GNC
    
    Fillmore Ls (Pogonip Gp) O1
    
      B72--p. 14
    
      B72A--p. 5
    
      R32--p. 30
    
    Fish Creek Mountains Tuff C T4 B1520
    
      R19--p. 36
    
    Fish Haven Dolomite ID O3 B896
    
      B72--p. 8
    
      B72A--p. 5
    
      B73--p. 29, 31
    
      B85--p. 8, 9
    
      B99A--p. 53, 56, 57
    
      B101--p. 18-21, 28
    
      R18--p. 20, 21
    
      SP4--p. 25
    
    Fish Lake Valley beds (Esmeralda Fm) T5 GNC
    
    Fish Lake Valley fm T5 GNC
    
    Fluorspar Canyon Fm SC D2
    
      B72A--p. 5
    
    Forest Home Ignimbrite EC T3 B1350
    
      B99A--p. 108, 109
    
    Forlorn Hope shale Cm1 GNC
    
    Fortification Basalt Mbr (Muddy Creek Fm) AZ T4 B1350
    
    Fortification Hill basalt
    
      B80--p. 7
    
     ossil Hill Mbr (Prida Fm) NW Tr2 B1564
    
    Fossil Hill Mbr (Favret Fm) NW Tr3 B1564 Fossil Hill Fm (Star
    
    Peak Gp) NW Tr3 B1564
    
    Fourmile Canyon Fm NC S1 B1350
    
      B64--p. 33
    
      B88--p. 78
    
      SP4--p. 31, 32
    
      Map 50
    
    Fraction Breccia C T4 B896
    
      B72--p. 23, 26
    
      B72A--p. 5
    
      B78--p. 36, 37, 65
    
      B92--p. 49, 58, 62, 65
    
      R19--p. 14
    
    Fraction Breccia Mbr
    
      B50--p. 172
    
    Fraction Dacite Breccia
    
      B92--p. 49, 58
    
      B99A--p. 135, 136
    
    Fraction Rhyolite Breccia
    
      B92--p. 49
    
    Fraction Tuff T4
    
      B77--p. 18, 20, 21, 32,40
    
      B92--p. 46, 49, 54, 57-59, 62, 65, 71, 72,
    
          82, 86, 105, 111, 116, 117, 127
    
      B96--p. 5, 11-13, 58, 63, 64
    
      B99A--p. 122, 133, 135-137
    
      B99B--p. 190
    
      R19--p. 7, 9, 10, 12, 13, 43-47, 52
    
      R33--p. 122-125
    
      R35--p. 3, 8
    
    Fraziers Well pluton
    
      B92--p. 29-33, 105
    
      B96--p. 27, 28, 33
    
    Frenchie Creek Rhyolite (Pony Trail Gp) NC J3 B1350, B1435-A
    
      B101--p. 50, 95
    
    Frenchie Creek Quadrangle Volcanics NC T3 B1350
    
      R10--p. 62
    
    Frenchman Mountain shist Tr GNC
    
      R10--p. 74, 75
    
    Frost Creek Mbr (Schoonover Fm) NC Pa1 B1350
    
    Frost Creek Volcanics NC T2 B1350
    
    Fry Creek Mbr (Schoonover Fm) NE M1 B1350
    
      B72A--p. 5
    
    Funeral Fm CA Q1, T5 B1200
    
      R26--p. 9, 10, 13, 14
    
    Gabbs Fm WC Tr3 B1200
    
      B58--p. 25
    
      B65--p. 28, 29
    
      B72A--p. 5
    
      B74--p. 6, 7, 11
    
      B99A--p. 95-97, 157
    
      B99B--p. 101, 129, 130, 218
    
      SP4--p. 63, 66
    
    Gabbs pluton
    
      B99A--p. 99, 101
    
    Gale Hills Fm SW T, K B1350
    
      B62--p. 44-46, 84, 93
    
      SP4--p. 73
    
    Gallagher Pass, tuff and breccia of
    
      R27--p. 6, 9, 11, 16, 21-25
    
      Map 77
    
    Garden City Fm UT O2, O1 B896
    
      B72--p. 7
    
      B72A--p. 5
    
      B85--p. 9
    
      B101--p. 18
    
    Garden Valley Fm C P1 B1200, B1502-A
    
      B64--p. 39, 40, 51, 54-56, 59, 103
    
      B72--p. 7
    
      B72A--p. 5
    
      B88--p. 25
    
      B99A--p. 87, 91
    
      R40--p. 28
    
      R41--p. 56, 58
    
      SP4--p. 48, 54
    
      Maps 20, 50
    
    Gardnerville Fm WC J1, Tr3 B1350
    
      B75--p. 6
    
      B99A--p. 98
    
      SP4--p. 66
    
      Maps 59, 60, 64
    
    Garrett Ranch Ignimbrite EC T3 B1200
    
    Garrett Ranch Gp
    
      B72--p. 14, 16
    
      B72A--p. 5
    
      R29--p. 19
    
    Garrett Ranch Volcanic Gp T3 ?
    
      R10--p. 74
    
    Gatecliff Fm C S1 B1200
    
      B72--p. 22, 23
    
      B72A--p. 5
    
      B99A--p. 47, 59, 60, 62, 63
    
      B99B--p. 123, 158
    
    Geddes Ls EC Cm2 B1200
    
      B57--p. 9, 11
    
      B64--p. 7, 12-14
    
      B72--p. 15
    
      B72A--p. 5
    
      B85--p. 4, 6, 7, 84
    
      B88--p. 11
    
      B101--p. 15
    
      R32--p. 52
    
      SP4--p. 23
    
      Map 50
    
    Gerster Fm (Park City Gp) UT P2 B896
    
      B54--p. 12, 13
    
      B72--p. 21
    
      B72A--p. 5
    
      B101--p. 41, 42, 47, 49
    
    Gerster Ls (Park City Gp)
    
      B85--p. 16
    
      B101--p. 40, 41
    
      R18--p. 20
    
      R32--p. 30
    
    Gettel Mbr (Laketown Dolostone) UT S2 B1564
    
    Ghost Dance Lava Mbr (Hu-pwi Rhyodacite) WC T4 B1564
    
    Gilbert Andesite C T5 B1200
    
      B72--p. 26
    
      B72A--p. 5
    
      B78--p. 32, 38, 67
    
      B99A--p. 128
    
    Gillis Fm WC Tr2 B1520
    
    Gilmore Gulch Fm C T3 B896
    
      B72A--p. 5
    
      B99A--p. 117, 119, 123
    
      B99B--p. 152
    
    Goblin Knobs, tuff of
    
      B99A--p. 113
    
      B99B--p. 169
    
    Gods Pocket Dacite NE T4 B1200
    
      B72--p. 20
    
      B72A--p. 5
    
    Gold Ace Ls Mbr (Carrara Fm) SC Cm1 B1564
    
    Gold Bug Fm WC J3, J2 B1350
    
      B75--p. 6
    
      SP4--p. 66, 71
    
    Gold Butte Granite SE Pr B1200
    
    Gold Butte pluton
    
      B80--p. 38
    
    Gold Creek pluton
    
      B101--p. 74
    
    Golden Door volcanics
    
      B62--p. 57-59, 98, 99
    
      R10--p. 29
    
    Gold Flat Mbr (Thirsty Canyon Tuff) SW T4 B1350
    
      B72--p. 18
    
      B72A--p. 5
    
      R19--p. 22-25, 29, 30, 32, 33
    
    Gold Hill Fm C Cm B896
    
      B72A--p. 6
    
      B81--p. 62
    
      B88--p. 5
    
      B99A--p. 33, 35, 37, 44, 45, 92, 124, 155
    
      B99B--p. 114-118, 123, 125, 138, 144-147,
    
         175, 197, 198, 200, 204, 210, 224-227
    
      R41--p. 49
    
      SP4--p. 14, 19
    
    Gold Hill quartzite
    
      B92--p. 40
    
    Gold Meadows quartz monzonite Pz2, O GNC
    
    Gold Meadow stock
    
      B77--p. 14
    
    Gold Park fm Map 38
    
    Gold Range Fm WC Tr3 B1520
    
      B74--p. 5-8, 11
    
      B99A--p. 94, 95
    
      R10--p. 46
    
      SP4--p. 67, 71, 73
    
      Maps 63, 74
    
    Goodsprings Dolomite SE D2, S, O, Cm3 B896
    
      B62--p. 2, 18-21, 67, 69, 71, 110
    
      B72--p. 12
    
      B72A--p. 6
    
      B81--p. 32
    
      R26--p. 6, 17
    
    Goodsprings Fm
    
      B47--p. 44
    
    Goodwin Fm EC O1 B1200
    
      B57--p. 9, 15-20, 23, 62, 65, 78,
    
        94, 97, 105, 108, 109
    
      B72--p. 15
    
      B72A--p. 6
    
      B85--p. 85
    
    Goodwin Ls (Pogonip Gp) O1
    
      B61--p. 226
    
      B64--p. 17, 18, 40
    
      B72A--p. 6
    
      B73--p. 24
    
      B77--p. 8, 9
    
      B88--p. 10-13, 15, 16
    
      B99A--p. 46
    
      B99B--p. 229
    
      B101--p. 10, 17, 19, 83
    
      R20--p. 10
    
      R32--p. 40, 42
    
    Goshute Canyon Fm UT Cm, Pr B1200 
    
      B72A--p. 6
    
      B73--p. 14
    
    Goughs Canyon Fm NC M2, M1 B1350
    
      B72A--p. 6
    
      B101--p. 30
    
      SP4--p. 41-44
    
    Grandeur Dolomite (Park City Gp)
    
      B72A--p. 6
    
    Grandeur Dolomite Mbr (Phosphoria Gp)
    
      B72--p. 8
    
    Grandeur Fm
    
      B72A--p. 6
    
      B101--p. 32, 42, 43
    
    Grandeur Mbr (Park City Fm) UT P1 B1200
    
      B101--p. 40, 42, 43
    
    Granite Point pluton
    
      B89--p. 30
    
    Grantsville Fm C Tr2 B1200
    
      B72A--p. 6
    
      B88--p. 31
    
      B93--p. 35, 36
    
      B99A--p. 92, 94
    
      B99B--p. 218, 220
    
      SP4--p. 63, 65
    
    Grass Valley Fm (Auld Lang Syne Gp) NC Tr3 B1200
    
      B59--p. 43, 123, 129
    
      B61--p. 166
    
      B65--p. 28
    
      B72--p. 24
    
      B72A--p. 6
    
      B83--p. 9
    
      B89--p. 4, 19, 320, 48, 49, 54, 59
    
      B93--p. 63
    
      B99A--p. 96
    
      R40--p. 8, 9
    
      R41--p. 77
    
      SP4--p. 66
    
    Grays Canyon Limestone Mbr (Nevada Fm) EC D2, D1 B1520
    
      B99A--p. 74
    
    Grossman Fm NC M, D B1520
    
      B101--p. 19, 28-30, 80 86, 98
    
      SP4--p. 43, 44
    
    Grouse Canyon Mbr (Belted Range Tuff) C T4 B1350
    
      R19--p. 23
    
    Grouse Canyon Mbr (Oak Spring Fm)
    
      B72--p. 18
    
      B72A--p. 6
    
    Guild Mine Mbr (Mickey Pass Tuff) WC T3 B1564
    
      R27--p. 5, 6,8, 10-12, 16-18, 26
    
      Maps 63, 64, 77
    
    Guilmette Dolomite
    
      B101--p. 26
    
    Guilmette Fm UT D3, D2 B896
    
      B72--p. 7, 8, 15, 16, 18
    
      B72A--p. 6 
    
      B73--p. 30, 32, 35-43
    
      B85--p. 10, 11, 27, 30, 69, 70, 79, 85, 86
    
      B99A--p. 62, 70-73, 75-77
    
      B99B--p. 80, 162, 165, 166
    
      B101--p. 25-29, 33, 78, 89, 90, 101
    
      R18--p. 20, 21
    
      R32--p. 56, 57
    
      R40--p. 36, 38-40
    
      R41--p. 53, 55
    
      SP4--p. 34
    
      Map 35
    
    Guilmette Ls D3, D2
    
      B61--p. 225
    
      B72A--p. 6
    
      B99A--p. 68, 81, 82, 149
    
      R32--p. 12, 25, 27, 29, 30
    
      R36--p. 14, 16-20, 23
    
    Hales Ls C O1, Cm3 B896
    
      B72A--p. 6
    
      B99A--p. 33, 41,42
    
      B99B--p. 213
    
      SP4--p. 21
    
    Halfpint Mbr (Nopah Fm) SE Cm B1350
    
    Halligan Mesa, tuff of
    
      B99A--p. 113
    
      SP4--p. 100
    
    Hall Creek tuff
    
      B88--p. 51, 55, 58
    
    Hall pluton
    
      B92--p. 30
    
    Hamburg Dolomite EC Cm3, Cm2 B896
    
      B57--p. 10, 79, 117
    
      B64--p. 7, 13-16, 19, 49, 53, 54, 72, 82-84, 92
    
      B72--p. 21
    
      B72A--p. 6
    
      B85--p. 4, 6-8, 84
    
      B88--p. 11, 15, 16, 78
    
      B99A--p. 38
    
      B101--p. 15, 16
    
      R32--p. 19, 52-54
    
      R33--p. 102
    
      R40--p. 81-83
    
      R41--p. 51, 56
    
      SP4--p. 23
    
    Hamburg Fm Map 35
    
    Hamburg Ls Cm3, Cm2
    
      B72--p. 14
    
      B72A--p. 6
    
      B99B--p. 212
    
      Map 50
    
    Hamilton Canyon Fm (White Pine Gp) EC M2 B1350
    
      B68--p. 7, 12-14, 16, 17
    
      B72--p. 14, 15, 17
    
      B72A--p. 6
    
    Hammond Canyon Fm NE P B1350
    
      B61--p. 51
    
      B101--p. 43 
    
    Hanapah, tuff of
    
      B99A--p. 121
    
      B99B--p. 87-89, 107-109
    
    Hanauer Fm UT D3 B1350
    
    Hanson Creek Dolomite
    
      B57--p. 9, 23, 25-27, 61, 62, 79, 80, 94, 96, 97, 105
    
      B64--p. 92
    
      B99A--p. 152
    
      B101--p. 21
    
    Hanson Creek Fm C S1, O3, O2 B1200
    
      B64--p. 17, 19-21, 56, 58, 95
    
      B72--p. 21-23
    
      B72A--p. 6
    
      B73--p. 29, 30
    
      B85--p. 8, 9, 85
    
      B88--p. 12, 14-16, 18, 78
    
      B90--p. 6-9, 12, 14, 15, 21
    
      B93--p. 21
    
      B99A--p. 46, 47, 51, 53, 55-63, 66, 67
    
      B101--p. 19-24, 80
    
      R32--p. 40, 42
    
      R40--p. 31, 32, 41, 57-59, 61-64
    
      R41--p. 49
    
    Happy Camp Fm NC S B1350
    
      B101--p. 24
    
    Happy Creek Gp
    
      B59--p. 34, 105, 111, 112, 119
    
    Happy Creek Volcanics NW P B1350
    
      SP4--p. 50, 54
    
    Happy Creek Volcanic series P ?
    
      B72--p. 25
    
      B72A--p. 6
    
    Hardhat granite K1 GNC
    
    Harkless Fm CA Cm1 B1350
    
      B72A--p. 6
    
      B78--p. 11, 13-18, 20, 23, 44-53, 57, 60, 64, 70, 72
    
      B84--p. 13
    
      B90--p. 16
    
      B92--p. 12, 13, 19, 24, 26, 28, 85, 102, 133
    
      B99A--p. 35, 36
    
      R19--p. 21
    
      SP4--p. 19
    
    Harmony Fm NC Cm3 B1200
    
      B59--p. 12, 85, 98, 113, 128
    
      B61--p. 89, 92, 93
    
      B72--p. 25
    
      B72A--p. 6
    
      B88--p. 20, 21, 23, 25, 26, 66, 67
    
      B89--p. 3, 5, 6, 40
    
      R10--p. 78
    
      R32--p. 46-48
    
      R33--p. 89-91, 93
    
      R36--p. 4, 5, 7
    
      R40--p. 18 
    
      R41--p. 65
    
      SP4--p. 21, 23, 36, 37, 49
    
      Map 50
    
    Harmony Hills Tuff (Quichapa Gp) UT T4 B1200
    
      B72--p. 16
    
      B72A--p. 6
    
      B73--p. 73
    
      R11--p. 6, 8, 11, 26, 32, 44, 54
    
    Harrington Creek Mbr (Schoonover Fm) NC M2 B1350
    
      B72--p. 20
    
      B72A--p. 6
    
    *Harrisburg Fm
    
      B72--p. 11
    
      B72A--p. 6
    
    Harrison Pass granodiorite T4 GNC
    
      B101--p. 79, plate 1
    
    Harrison Pass pluton
    
      B81--p. 45
    
      B101--p. 5, 74, 76, 77, 79, 99-101
    
    Harrison Pass stock
    
      R10--p. 33
    
    Hartford Hill fm
    
      Maps 4Ag, 5Ag
    
    Hartford Hill Rhyolite
    
      B49--p. 57
    
      B65--p. 31
    
      B70--p. 10, 23-29, 31, 40, 52, 65, 72, 82
    
      B71--p. 7, 9-14, 17, 24
    
      B72--p. 27
    
      B81--p. 17, 75, 76, 98-107
    
      R10--p. 70, 73
    
    Hartford Hill Rhyolite Tuff WC T4 B1200, B1482-A
    
        (abandoned)
    
      B72A--p. 6
    
      B75--p. 10, 17-19, 21, 24, 27, 31, 34
    
      R23--p. 2
    
      R27--p. 5
    
      R33--p. 73
    
    Havallah Fm NC P1, Pa2 B1200
    
      B59--p. 27, 85, 92, 95, 128
    
      B72--p. 25
    
      B72A--p. 6
    
      B88--p. 29, 31, 54, 56, 58, 66, 74
    
      B89--p. 3, 6, 7, 11, 17, 18, 40, 56,
    
         57, 62, 64, 65, 73, 94, 104
    
      B101--p. 32, 45, 46, 86
    
      R32--p. 46, 47
    
      R33--p. 89
    
      R40--p. 18, 73
    
      R41--p. 65
    
      SP4--p. 49-51, 54, 57
    
      Map 50
    
    Havallah sequence
    
      B83--p. 4, 5
    
      B88--p. 4, 5, 23-28, 31, 54, 56-58, 89
    
      R32--p. 21, 46
    
      SP4--p. 42, 43, 46, 50, 51, 57, 59, 65
    
      Map 50
    
    Hayden Canyon Fm EC P1 B1350
    
    Hayes Canyon Mbr (Devils Gate Ls) EC D3 B1200
    
      B72A--p. 6
    
      B99A--p. 73 
    
    Hay Ranch Fm NC Q1, T5 B1200
    
      B64--p. 42
    
      B72A--p. 6
    
      B79--p. 21
    
      B101--p. 69, 70
    
      R40--p. 26
    
      SP4--p. 95
    
    Hedwig Breccia Mbr (Esmeralda Fm) C T4 B896
    
      B72--p. 26
    
      B72A--p. 6
    
      B99A--p. 126, 128
    
      B99B--p. 144
    
    *Heller Dacite
    
      B92--p. 49, 58, 59
    
      B99A--p. 135, 136
    
      *Heller Tuff
    
      B92--p. 49, 50, 55, 58, 59, 68, 91, 111, 114
    
      R33--P. 121, 123-125
    
    Hells Bells Canyon Fm SE T4, T3 B1350
    
      B72A--p. 6
    
    Hermit Fm
    
      B62--p. 47, 48
    
      B72--p. 11
    
      R18--P. 8
    
    Hermit Shale (Aubrey Gp) SE P1 B1457-A
    
      SP4--p. 51
    
    Heusser Mountain pluton
    
      R10--p. 51
    
    Hicks Mountain pluton
    
      B101--p. 70
    
    Hidden Cliff, trachyte of
    
      R19--p. 23, 29, 30, 32
    
    High Lake Mbr (Laketown Dolomite) UT S1 B1564
    
    Highland Park Fm
    
      B72A--p. 6
    
    Highland Peak Fm EC Cm3, Cm2 B896
    
      B73--p. 16-21, 23, 26
    
      B81--p. 71-73
    
    Highland Peak Ls
    
      B47--p. 42, 43
    
      B72A--p. 16
    
    High Rock sequence
    
      B70--p. 15-22
    
      SP4--p. 92
    
    Highway Ls NC Pa2 B1200
    
      B59--p. 24, 95, 113
    
      B72--p. 25
    
      B72A--p.
    
      SP4--p. 46
    
    Hiko Tuff EC T4 B1350
    
      B72--p. 16
    
      B72A--p. 6
    
      B73--p. 71
    
      R10--p. 63 
    
    Hiko Tuff Mbr (Page Ranch Fm) T4
    
      R11--p. 6, 8, 10, 11, 27, 28, 32, 38
    
    Hines Tongue CA Z B1350
    
      B77--p. 5
    
      B78--p. 9
    
      B92--p. 12
    
    Hogan Fm (Ely Gp) NE Pa2 B1350
    
      B72--p. 7, 8, 16, 21
    
      B72A--p. 6
    
      B101--p. 32, 35-37
    
      R32--p. 30
    
    Holiday fm (Ely Gp) Pa2 GNC
    
    Home Station Mbr (Augusta Mountain Fm) NC Tr2 B1564
    
    Hoodoo Canyon, tuff of T3
    
      B99A--p. 124, 125
    
      R19--P. 4, 37, 38, 40, 41
    
    Horse Camp Fm EC T5, T4 B1350
    
      B99A--p. 108, 111, 150
    
      B99B--p. 36, 79
    
    Horse Mountain, sandstone and siltstone of
    
      B101--p. 32, 46
    
    Horse Spring Fm SE T4, T3 B896
    
      B62--p. 44-48, 57, 58, 80, 83, 86, 87, 90, 92, 93,
    
          100, 127, 131, 151, 152, 154, 158
    
      B65--p. 222, 223
    
      B72--p. 11
    
      B73--p. 67
    
      B81--p. 20, 21, 37
    
      B87--p. 7, 24, 25
    
      B95--p. 13
    
      B99A--p. 107
    
      R10--P. 57
    
      R18--P. 6
    
      SP4--p. 73, 91, 93
    
      Maps 52, 67
    
    Hot Creek Canyon, tuff of
    
      B99A--p. 117, 118, 123
    
    House Ls (Pogonip Gp) UT O1 B1200
    
      B72A--p. 7
    
      R32--P. 30
    
    Hoyt Canyon Fm WC Tr3 B1564
    
    Hualapai Ls Mbr (Muddy Creek Fm) SE T5 B1482-A 
    
    Humboldt Fm NC T4 B896, B1435-A
    
      B54--p. 17, 88, 170-172
    
      B60--p. 26-32, 40, 45, 47, 48, 56, 57
    
      B65--p. 3, 191
    
      B67--p. 3
    
      B72--p. 20, 25
    
      B72A--p. 7
    
      B73--p. 78
    
      B76--p. 19
    
      B88--p. 48
    
      B97--p. 7
    
      B99B--p. 27
    
      B101--p. 60, 62, 63, 67 
    
      R32--P. 18
    
      R40--p. 24, 26
    
      SP4--p. 89
    
    Humboldt lopolith
    
      B97--p. 71
    
      SP4--p. 71
    
    Humboldt Valley fm Q1
    
      R29--p. 6
    
    Hunter Creek, sandstone of
    
      R22--p. 1-3
    
      Maps 4Ag, 4Bg
    
    Hu-pwi Rhyodacite WC T4 B1564
    
    Ibex Mbr (Ely Springs Dolomite) UT O3 B1564
    
    Idaho Canyon Tuff NW T4 B1520
    
    Idaho fm Q, Ts GNc
    
    Idavada Volcanics ID T4 B1350
    
      B67--p. 21-24, 31, 33
    
      B101--p. 63, 65, 67
    
    Illipah Fm EC T2 B1200
    
      B57--p. 41-43, 57, 81, 111
    
      B72--p. 15
    
      B72A--p. 7
    
    Illipah Ss Mbr (Chainman Shale) 
    
      R18--p. 8, 15
    
      R40--p. 39
    
      R41--p. 55
    
    Indian Canyon Fm (Park City Gp) NE P2 B1350
    
      B72--p. 21
    
      B72A--p. 7
    
      R32--p. 30
    
    Indian Lakes Fm (Lahontan Valley Gp) WC Q1 B1350
    
      R9--p. 11, 14-16
    
      Map 76
    
    Indian Springs Fm SE M2 B896
    
      B72A--p. 7
    
      SP4--p. 45
    
    Indian Springs Mbr (Bird Spring Fm) M2
    
      B72A--p. 7
    
    Indian Trail Fm SE T4 B1350, B1422-A (name abandoned)
    
      B72--p. 18
    
      B72A--p. 7
    
      B73--p. 73, 77
    
      B77--p. 16, 21-23
    
    Indian Well Fm NE T3 B1564, B1435-A
    
      B101--p. 59
    
      SP4--p. 89, 98, 105
    
    Inskip Fm NC M, D B1200, B1435-A
    
      B59--p. 18, 20
    
      B72--p. 26
    
      B72A--p. 7
    
      B89--p. 3, 6, 40
    
      SP4--p. 33-35, 41-44
    
      Map 50
    
    Ironside Dolomite Mbr (Sultan Ls) SE D2 B896
    
      B72A--p. 7
    
    Iron Spring, tuff of 
    
      B99A--p. 124
    
    Irontown Mbr (Page Ranch Fm) UT T4 B1200
    
      R11--p. 8, 10, 27, 54
    
    Italian Springs Fm C T3 B1520
    
    Jacks Peak Fm (Valmy Gp) NE O3 B1350
    
      B101--p. 12
    
      R40--p. 59
    
    Jangle Ls SC Cm2 B1200
    
    Jangle Ls Mbr (Carrara Fm) Cm2
    
      B72A--p. 7
    
    Jarbidge Rhyolite NE T4 B1200, B1457-A
    
      B67--p. 21-24, 30, 31, 33
    
      B72--p. 20
    
      B72A--p. 7
    
      B101--p. 60, 62-64, 66, 69, 71, 77, 100-103
    
      R10--p. 58, 59
    
      SP4--p. 102
    
    Jenkins Peak Fm NE M B1350
    
      B67--p. 14
    
    Jenny Creek Fm (Idavada Volcanics) NE T4 B1350
    
    Jenny Creek Tuff NE T4 B1457-A
    
      B72--p. 20
    
      B72A--p. 7
    
      B101--p. 62-65,71
    
    Joana Ls EC M1 B896
    
      B57--p. 9, 31-33, 40, 58, 60, 61, 88, 91, 111
    
      B72A--p. 7
    
      B73--p. 44, 46, 48. 49
    
      B85--p. 11, 12, 27, 59, 73, 79, 84, 85, 90
    
      B99A--p. 72, 76-78, 82-85, 150, 152, 154
    
      B99B--p. 80
    
      B101--p. 27-29, 33, 98, 99
    
      R18--p. 9, 20, 21
    
      R29--p. 8, 14
    
      R32--p. 27, 30, 57
    
      R36--p. 14, 16, 17
    
      R40--p. 36, 38-40, 85, 87, 88
    
      R41--p. 53, 55
    
      SP4--p. 41, 43
    
      Maps 20, 35,50
    
    Joes Canyon Fm (Clipper Canyon Gp) C O3 B1200
    
      B72--p. 23
    
      B72A--p. 7
    
      B99A--p. 56
    
    Johnnie Fm SE Z B896
    
      B47--p. 19
    
      B62--p. 12, 63, 67, 73
    
      B72A--p. 7
    
      B73--p. 12, 13
    
      B77--p. 4, 30, 34, 38
    
      B92--p. 12
    
      R20--p. 10
    
      R39--p. 4
    
      SP4--p. 14, 18 
    
    Johns Wash Ls EC Cm3 B1200
    
      B72A--p. 7
    
      B73--p. 20
    
      B85--p. 6-8, 58
    
      B99A--p. 38, 40
    
      B101--p. 15
    
      R32--p. 30
    
    Jory Mbr (Havallah Fm) NC P1, Pa2 B1350
    
      B72A--p. 7
    
    Juab Ls (Pogonip Gp) UT O2 B1200
    
      B72--p. 8, 14, 17
    
      B72A--p. 7
    
      B101--p. 18
    
      R32--p. 30
    
    June Bell Rhyolite NC T B896
    
    June Canyon sequence
    
      B72--p. 23
    
      B72A--p. 7
    
      B99A--p. 79
    
    Kaibab Fm UT P1 B896
    
      B62--p. 35-38, 43, 60, 69, 79, 80,
    
          83, 88, 89, 91, 152, 154, 160
    
      B72--p. 11, 12
    
      B72A--p. 7
    
      R18--p. 6-8
    
      R20--p. 10
    
      R26--p. 15, 17
    
      Map 67
    
    Kaibab Ls (Aubrey Gp) UT P1 B896
    
      B62--p. 49, 50
    
      B65--p. 236
    
      B72--p. 14, 15
    
      B72A--p. 7
    
      B73--p. 59, 60, 62, 63
    
      B81--p. 24
    
      R32--p. 30, 56, 57, 60
    
      Kaibab Ls (Park City Gp) NE P1 B1502-A
    
      B85--p. 13, 15
    
      B101--p. 32, 40-43
    
      SP4--p. 53, 64, 79
    
    Kalamazoo Volcanics EC T B1200
    
      B72--p. 14
    
      B72A--p. 7
    
      SP4--p. 98
    
    Kane Wash Fm SE T4 B1350
    
      R11--p. 6, 8, 11, 27-32
    
    Kane Wash Tuff T4
    
    Kanosh Shale (Pogonip Gp) UT O2 B1200
    
      B72--p. 7, 8, 14
    
      B72A--p. 7
    
      B85--p. 9
    
      B101--p. 18
    
      R32--p. 30
    
      Map 35
    
    Kanrohat, porphyry of
    
      B99A--p. 127
    
      B99B--p. 115-121 
    
    Kate Peak Andesite
    
      B49--p. 69, 70, 71
    
    Kate Peak Fm WC T4 B1200
    
      B70--p. 28, 30-34, 36, 38, 52, 53, 66
    
      B71--p. 7, 10, 12, 18-20, 22, 24
    
      B72--p. 27
    
      B72A--p. 7
    
      B75--p. 25, 34
    
      B91--p. 69
    
      R22--p. 2
    
      R23--p. 2, 3
    
      R40--p. 3
    
      R41--p. 31, 32, 34, 36
    
      Maps 2Cg, 4Ag, 4Bg, 4cG, 4Dg, 5Ag, 59
    
    Kawich Range Tuffs
    
      B92--p. 57
    
    *Kayenta Fm AZ Tr3 B896 (equivalent in NV?)
    
      SP4--p. 60, 62, 64, 67, 79
    
    Kendall Tuff C T3 B896
    
      B78--p. 34, 35
    
      R19--p. 14-16, 53, 64
    
    Kern Mountain pluton
    
      R10--p. 52
    
    Keyhole leucogranite Cz3, Cz2 GNC
    
    Kiln Canyon, tuff of
    
      B99A--p. 117, 119, 120
    
    King Lear Fm NW K1 B1200
    
      B59--p. 53, 105-111
    
      B65--p. 30
    
      B72A--p. 7
    
      B88--p. 55
    
      SP4--p. 71, 73, 74, 86
    
    King Tonopah Mbr (Fraction Tuff) C T4 B1564
    
      B92--p. 46, 49-51, 53-55, 57, 91, 105
    
      R33--p. 121, 123
    
    Kinikinic Quartzite ID O2 B896
    
      R18--p. 9
    
    Kinkead Spring ls
    
      B99A--p. 86
    
    Kinsey Canyon Fm EC T2 B1200
    
      B72--p. 14
    
      B72A--p. 7
    
      B85--p. 17, 28
    
      B99A--p. 107
    
      SP4--p. 89
    
    Kinsley pluton
    
      B101--p. 76, 77
    
      R10--p. 50
    
    Klipper Gap pluton
    
      B88--p. 32
    
    Klondyke, rhyolite of
    
      B92--p. 45, 86, 89, 9
    
      R33--p. 122, 125
    
    Knickerbocker Andesite WC Q1, T5 B1200
    
      B49--p. 57, 69, 70 
    
      B70--p. 40
    
      B71--p. 10, 20, 21
    
      B72--p. 27
    
      B72A--p. 7
    
      Map 59
    
    Knob Hill granite T GNC
    
    Knob Hill pluton
    
      R10--p. 29
    
    Kobeh Mbr (McColley Canyon Fm) C D1 B1520, B1457-A
    
      B72--p. 22
    
      B72A--p. 7
    
    Koipato Fm NW Tr1 B896
    
      B59--p. 20, 38, 128
    
      B61--p. 155, 174, 175, 178, 186, 191
    
      B65--p. 27
    
      B72--p. 25
    
      B72A--p. 7
    
      B83--p. 4-6
    
      B88--p. 28, 54
    
      B99A--p. 92
    
      SP4--p. 64
    
      Maps 50, 57
    
    Koipato Gp Tr1
    
      B72--p. 25
    
      B101--p. 88
    
      R40--p. 8
    
      R41--p. 76, 77
    
      SP4--p. 57, 63, 65
    
    Koipato sequence
    
      B88--p. 28
    
    Labyrinth Canyon Mbr (Thirsty Canyon Tuff) C T4 B1350
    
      B72--p. 18
    
      B72A--p. 7
    
      R19--p. 23, 29, 30, 32
    
    Lahontan Valley Gp WC Q1, Q2 B1350
    
      R9--p. 11, 19
    
    Lake Lahontan deposits NW Q1
    
      B71--p. 23
    
      B72A--p. 7
    
    Lake Newark Fm NE T5, T4 B1200
    
      B57--p. 43-46, 51, 59, 68, 81, 82
    
      B72--p. 15
    
      B72A--p. 7
    
    Lake Newark tuff
    
      B57--p. 76
    
    Laketown Dolomite UT S3, S2 B896
    
      B54--p. 10
    
      B62--p. 24, 25
    
      B72--p. 8, 15, 17, 18
    
      B72A--p. 7
    
      B73--p. 29-32
    
      B81--p. 68
    
      B85--p. 8-10
    
      B99A--p. 54, 55, 62, 65, 66, 69, 149
    
      B99B--p. 165 
    
      B101--p. 20, 21, 25, 26, 28
    
      R40--p. 40
    
      R41--p. 55
    
      SP4--p. 28, 31
    
    Lampson Fm EC Q1, T5 B1200
    
      B57--p. 45, 46
    
      B72--p. 15
    
      B72A--p. 7
    
    Las Vegas Fm SE Q1 B1350
    
      B62--p. 49
    
      B95--p. 17
    
      R26--p. 6, 7
    
    Leach Canyon Fm (Quichapa Gp) UT T3 B1200
    
    Leach Canyon Tuff
    
      B72--p. 16
    
      B72A--p. 7
    
      R11--p. 6, 8, 10, 11, 22, 23, 32, 33, 41, 44, 45, 53,                                          54
    
    Leach Fm NC Pz2, M B1200, B1482-A (name abandoned)
    
      B53--p. 6-19, 20, 24, 30, 32
    
      B59--p. 20, 38, 128
    
      B72--p. 26
    
      B72A--p. 7
    
      B89--p. 6, 69
    
    Lee Canyon, argillite of
    
      B101--p. 29, 96
    
    Lehman Fm (Pogonip Gp) UT O2 B1200
    
      B72--p. 8, 14, 17
    
      B72A--p. 8
    
      B101--p. 18
    
      R32--p. 30
    
    Lehman Ls (Pogonip Gp)
    
      B85--p. 9
    
    Lehman shale Map 35
    
    Lime Mountain, volcanics of
    
      B92--p. 58, 60, 62, 63, 65, 68, 76, 79, 103
    
    Lime Mountain, trachyandesite of
    
      R33--p. 122
    
    Limerick Greenstone (Koipato Gp) NW Tr1 B896
    
      SP4--p. 65
    
    Lincoln Flat, andesite of
    
      R27--p. 6, 11, 16, 25
    
    Lincoln Peak Fm EC Cm3, Cm2 B1200
    
      B72A--p. 8
    
      B73--p. 16, 19, 20, 22
    
      B85--p. 4, 6, 7, 43, 44, 49, 51, 58
    
      B93--p. 34
    
      B99A--p. 33, 37-40
    
      B99B--p. 80
    
      R32--p. 27
    
    Lenihan Canyon Tuff WC T3 B1564
    
      Maps 1Ag, 2Cg, 50
    
    Little Fish Lake fm Q, T GNC
    
      B99A--p. 121
    
    Little Meadow fm
    
      B99A--p. 33
    
    Lodi Hills pluton 
    
      B99A--p. 99
    
    Lone Mountain Dolomite EC D1, S3 B1200
    
      B57--p. 9, 26-30, 80, 94, 96, 99, 101
    
      B62--p. 24, 25, 79
    
      B64--p. 21-24, 56, 58
    
      B72--p. 15
    
      B72A--p. 8
    
      B73--p. 31, 34
    
      B77--p. 10, 11, 36
    
      B85--p. 8, 85
    
      B93--p. 21, 43, 44
    
      B99A--p. 55, 58, 61-67, 69, 74-76
    
      B101--p. 18-26, 80
    
      R20--p. 10
    
      R32--p. 25
    
      R40--p. 14, 41
    
      SP4--p. 31
    
    Lone Mountain Fm D1, S3
    
      B54--p. 10
    
      B72--p. 22
    
      B72A--p. 8
    
      B99A--p. 65
    
      R41--p. 49, 58
    
    Lone Mountain pluton
    
      B78--p. 28, 31, 45, 53, 60, 63, 69
    
      B92--p. 210, 26-30, 44, 94, 103, 105
    
      B96--p. 5
    
      B101--p. 76, 77
    
    Long Canyon sequence
    
      B101--p. 32, 47, 95
    
    Longfellow quartz monzonite K GNC
    
    Loray Fm (Arcturus Gp) NE P1 B1200
    
      B72--p. 14, 15, 21
    
      B72A--p. 8
    
      B85--p. 15
    
      B101--p. 32, 40, 41
    
      R32--p. 30
    
    Lost Canyon Mbr (Ely Springs Dolostone) UT O3 B1564
    
    Lousetown Fm WC Q1, T5 B1200
    
      B70--p. 39, 40 
    
      B71--p. 7, 10, 21-23
    
      B72--p. 27
    
      B72A--p. 8
    
      B75--p. 14, 34
    
      R22--p. 2
    
    Lovelock Fm NW Q1, J2, J1 B1350
    
      B89--p. 39
    
      B94--p. 12
    
      R9--p. 9, 10
    
      R29--p. 6
    
      SP4--p. 71
    
    Lovelock Valley fm J2, J1 GNC (Lovelock Fm?)
    
    Lunar Cuesta, tuff of 
    
      B99A--p. 114, 123
    
    Lund Tuff Mbr (Needles Range Fm) UT T3 B1520
    
    Luning Fm WC Tr3 B896
    
      B58--p. 22
    
      B61--p. 119, 120
    
      B65--p. 28, 221
    
      B72--p. 27
    
      B72A--p. 8
    
      B74--p. 6-8, 11
    
      B81--p. 78
    
      B83--p. 9, 10
    
      B93--p. 35-38
    
      B99A--p. 94-97, 101, 102, 157, 159, 160
    
      B99B--p. 11, 21, 28, 34, 43, 44, 72, 73, 101-105,
    
        129, 130, 134-137, 180, 218, 222
    
      R41--p. 42
    
      SP4--p. 63, 65, 66, 78
    
    Luning sequence
    
      B99A--p. 141
    
    Lyndon Ls (Bright Angel Gp) EC Cm2 B896
    
      B47--p. 31, 33
    
      B62--p. 14, 16-18
    
      B63--p. 37, 39, 40
    
      B72--p. 17
    
      B72A--p. 8
    
      B73--p. 14-16, 26
    
      R29--p. 6
    
    Malpais Basalt C T5, T4 B896
    
      B77--p. 27
    
      B78--p. 36
    
      R19--p. 14, 21, 51, 52, 56, 59
    
    Mammoth Andesite C T B896
    
    Marble Bluff ls T GNC
    
    Marble Bluff tephra bed Q1
    
      R41--p. 81
    
    Maris Rhyolite (Oddie Rhyolite)
    
      B72A--p. 8
    
      B99A--p. 127
    
      B99B--p. 144
    
    Masket Shale C S3, S2 B1200
    
      B72--p. 23
    
      B72A--p. 8
    
      B99A--p. 47, 56, 59-63, 79, 80
    
      B99B--p. 123, 158
    
    Mayflower Schist C O1 B896
    
      B99A--p. 37, 39, 42-46, 124
    
      B99B--p. 46-49, 58, 114, 117, 144
    
      SP4--p. 39
    
    McAfee Adamellite CA K2, J B1350
    
    McAfee Quartzite (Valmy Gp) NE O1 B1350
    
      B101--p. 12, 86
    
      R40--p. 22, 59 
    
    McCann Canyon, rhyolite of
    
      B92--p. 41, 43
    
    McClellan Creek sequence
    
      B61--p. 62
    
      B101--p. 26
    
    McClellan Peak Basalt
    
      B70--p. 40
    
      B71--p. 10, 22, 27
    
      B72--p. 27
    
      B72A--p. 8
    
      R10--p. 72
    
    McClellan Peak Olivine Basalt WC Q1 B1200
    
      R41--p. 31, 34
    
    McColley Canyon Fm (Nevada Gp) NE D1 B1200, B1457-A
    
      B72--p. 22
    
      B88--p. 18
    
      B90--p. 7, 10, 12, 16-18, 20, 21
    
      SP4--p. 32
    
    McColley Canyon Mbr (Nevada Fm) D1
    
      B72A--p. 8
    
    McCoy Creek Gp NE Z B1350
    
      B72--p. 15
    
      B72A--p. 8
    
      B85--p. 3,4,6, 37, 61, 63
    
      B101--p. 9, 75, 79, 80
    
      R32--p. 27
    
      SP4--p. 14, 18
    
    McCoy pluton
    
      B88--p. 33
    
    McDonald Creek pluton
    
      B101--p. 76
    
    McGee Till CA Q1 B896
    
      B94--p. 12
    
    McKinney Tanks, tuff of
    
      B99A--p. 121, 122
    
      B99B--p. 87-89, 107-109
    
    McMonnigal Ls C D1 B1200
    
      B72--p. 23
    
      B72A--p. 8
    
      B88--p. 18
    
      B99A--p. 60, 64, 68, 79, 80
    
    Meade Peak Fm (Park City Gp)
    
      B72A--p. 8
    
    Meade Peak Mbr (Park City Gp)
    
      B72A--p. 8
    
    Meade Peak Phosphatic Shale Mbr (Phosphoria Fm) UT P1 B1200,
    
    B1457-A
    
      B72--p. 8
    
      B101--p. 32, 40, 43, 46
    
    Meadow Fork Fm NE T2 B1350
    
      B72A--p.
    
      B101--p. 54, 100
    
      SP4--p. 110
    
    Meadow Valley Ls
    
      B72--p. 17 
    
      B72A--p. 8
    
    Meadow Valley Mbr (Highland Peak Fm) EC Cm2 B1350
    
    Meda Rhyolite C T4 B896
    
      B78--p. 35
    
      B92--p. 68
    
      R19--p. 14, 51, 52, 54, 55, 59, 60
    
    Mehrten Fm CA T5, T4 B896 
    
      R41--p. 31
    
    Meikeljohn fm M2 GNC
    
      B72--p. 18
    
      B72A--p. 8
    
    *Meister Dolomite Mbr (Devils Gate Fm)
    
      B72A--p. 8
    
      Meister Mbr (Devils Gate Ls) EC D3, D2 B1200
    
      B99A--p. 73
    
    Mendha Fm EC O1, Cm3 B896
    
      B73--p. 19, 20, 22
    
      B99A--p. 41
    
    Mendha Ls Cm3
    
      B47--p. 43, 44
    
      B72--p. 17
    
      B72A--p. 8
    
    *Menzel Rhyolite Tr, P (Nenzel Rhyolite Breccia ?)
    
      B72--p. 26
    
      B72A--p. 8
    
    Mercury Ls SE M1 B1200
    
      B72--p. 18
    
      B72A--p. 8
    
      B73--p. 46
    
      B77--p. 13
    
      B99A--p. 83
    
      SP4--p. 43
    
    Mesa Basalt NW T5, T4 B896
    
      B59--p. 68, 137
    
    Metallic City Tuff WC T3 B1564
    
      Map 63
    
    Mickey Pass Tuff WC T3 B1564
    
      R27--p. 5-12, 16-20, 26, 27
    
      Maps 1Ag, 59, 60, 63, 64, 77
    
    Middlegate Fm WC T4 B1200
    
      B83--p. 26
    
      R10--p. 57
    
    Midnight Quartzite NE Cm1 B1350
    
      B60--p. 13
    
    Midway Andesite (Name abandoned, see Mizpah Trachyte)
    
      B92--p. 46, 110
    
      B99A--p. 135
    
    Mikes Creek Mbr (Schoonover Fm) NE M2 B1350
    
      B72A--p. 8
    
    Mikes Ranch fm T4 GNC
    
    Mill Canyon Mbr (Havallah Fm) NC P1 B1350
    
      B72A--p. 8
    
    Mill Canyon sequence S
    
      B72--p. 23
    
      B72A--p. 8
    
      B99A--p. 60, 79 
    
    Mill Canyon stock
    
      R10--p. 37
    
    Miller Mountain Fm Cm1 (name abandoned)
    
      B72A--p. 8
    
      B78--p. 22
    
    Millers, rhyolite of
    
      B92--p. 83, 85, 86
    
      R33--p. 122, 126
    
    Milltown Andesite C T4 B896
    
      B48--p. 11, 12
    
      B77--p. 18, 21,34, 38
    
      B78--p. 35, 37, 67
    
      R19--p. 14, 17-19, 51, 53-66
    
      R33--p. 78-80, 83, 84
    
    Milton Fm CA J3, J2 B896, B1435-A
    
    Mina Fm WC P B1564
    
      R42--p. 1
    
      SP4--p. 54, 55
    
      Maps 63, 74
    
    Mineral Ridge pluton
    
      B78--p. 28, 31, 63
    
    *Minersville Tuff Mbr (Needles Range Fm) T3
    
      B99A--p. 119
    
      R11--p. 17
    
    Mira Basalt C T4 B896
    
      B78--p. 35
    
      R19--p. 20, 51
    
    Mission Spring Fm C T B1520
    
      B99A--p. 131, 132, 158
    
    Mitchell Creek Fm NC Pa1 B1520
    
      B101--p. 32, 45, 85, 95
    
    Mizpah Andesite
    
      B99A--p. 135
    
    Mizpah Fm
    
      B92--p. 32, 36, 43, 45-50, 55, 57, 62,
    
         68, 82, 89, 108, 110, 111, 114, 121
    
      B96--p. 5, 13, 27, 28, 33
    
      R33--p. 119, 121-126
    
    Mizpah Trachyte C T4 B896
    
      B50--p. 172
    
      B78--p. 36, 65
    
      B92--p. 46, 49, 110
    
      B99A--p. 130, 133, 135, 136, 139
    
      B99B--p. 190
    
      R19--p. 9, 10, 12, 43, 44, 46, 47
    
      R33--p. 80
    
    Moapa Fm SE D3 B1350
    
      B72--p. 18
    
      B72A--p. 8
    
    Moenave Fm AZ Tr3 B1200, B1457-A
    
      B72A--p. 8
    
      SP4--p. 60, 62, 64, 67, 79
    
    Moenkopi Fm AZ Tr2, Tr1 B896
    
      B62--p. 37-39, 43, 58, 60, 69, 80, 83, 87-89,
    
          92, 152, 154, 160
    
      B65--p. 29 
    
      B72A--p. 8
    
      B73--p. 62-64
    
      B81--p. 32
    
      B99A--p. 93
    
      R18--p. 6-8
    
      R20--p. 2, 7, 10
    
      R26--p. 15, 17
    
      SP4--p. 53, 60, 62, 64, 67, 79
    
      Map 67
    
    Moleen Fm NE Pa2, Pa1 B1200
    
      B64--p. 38, 39
    
      B72--p. 21
    
      B72A--p. 8
    
      B73--p. 56
    
      B99A--p. 87
    
      B101--p. 32, 34, 35, 38
    
      R32--p. 17
    
      R40--p. 23, 24
    
      SP4--p. 46, 48
    
      Map 50
    
    Moleen Fm (Ely Gp) Pa2, Pa1
    
    Moleen Mbr (Ely Ls) Pa2, Pa1
    
    Monarch Mill Fm WC T5 B1200
    
      B81--p. 14
    
      R10--p. 57
    
    Monocline Valley Fm SE O1 B1350
    
    Mono Lakes Till
    
      B94--p. 12
    
    Monotony Tuff SC T3 B1520
    
      B92--p. 32-34, 45, 86, 89
    
      B99A--p. 113, 118, 119, 152, 153
    
      B99B--p. 42, 166, 169, 170
    
      SP4--p. 100
    
    Monotony Valley, tuff of
    
      B77--p. 25
    
    *Montana Breccia (Tonopah Fm ?)
    
      B99B--p. 190
    
    Monte Cristo Dolomite SE M2, M1 B896
    
    Monte Cristo Gp M2, M1
    
      B72--p. 11
    
      B72A--p. 8
    
    Monte Cristo Ls M2, M1
    
      B62--p. 27, 30-32, 65, 66, 68-71, 77-81, 96,
    
         104, 108, 110-112, 146,157
    
      B73--p. 43, 46, 82
    
      B77--p. 13
    
      B81--p. 29, 31, 33, 34, 36
    
      B99A--p. 83
    
      R18--p. 8
    
      R20--p. 10
    
      R26--p. 15, 17
    
      SP4--p. 43, 45, 84
    
    Monte Cristo stock
    
      B57--p. 4, 7, 11, 46-51, 53, 55, 66, 109, 110
    
      B85--p. 25 
    
      R40--p. 39
    
    Montenegro Mbr (Campito Fm) CA Cm1 B1350
    
      B72A--p. 8
    
    Monte Neva Fm EC Cm2 B1200
    
      B72--p. 14
    
      B72A--p. 8
    
      B85--p. 6
    
    Moores Creek, tuff of
    
      B99A--p. 124
    
    Moorman Ranch Fm EC P1 B1200
    
    Moorman Ranch Mbr (Pequop Fm) P1
    
    Morena rhyolite
    
      R19--p. 14-17, 53, 57, 64
    
    Morey, tuff of
    
      B99B--p. 152, 153
    
    Morgan Ranch Fm (Wassuk Gp) WC T4 B1200
    
      B75--p. 13
    
      B99A--p. 138
    
      R10--p. 64
    
    Mori Road fm T2 GNC
    
    Morning Glory Ls Mbr (Gold Hill Fm) Cm
    
      B99B--p. 147
    
    Mountain City Fm NE Pa, M B1200
    
      B54--p. 116
    
      B101--p. 31, 86, 98
    
      SP4--p. 43, 44
    
    Mountain City pluton
    
      B101--p. 76, 86
    
    Mountain City stock
    
      R10--p. 30
    
    Mountain Springs Fm SE D1, S, O3 B1520
    
    Mount Davis Volcanics AZ T4 B1350
    
      B62--p. 57, 59, 98
    
      R10--p. 28
    
      SP4--p. 102
    
      Maps 3Ag, 45
    
    *Mount Hamilton gp O2, O1, Cm3 GNC
    
      B72--p. 15
    
      B57--p. 16, 17
    
    Mount Jefferson, tuff of
    
      B99A--p. 127, 128
    
      B99B--p. 115-117, 121, 149-151, 176
    
      B100--p. 19, 61
    
      R19--p. 37
    
      R41--p. 132-134
    
    Mount Kate Volcanics WC T5 B1200
    
    Mount Neva pluton
    
      B101--p. 76, 77
    
    Muav Ls AZ Cm2 B896
    
    Muddy Creek Fm SE T5, T4 B896, 1482-A
    
      B62--p. 48-50, 58, 61, 78, 90, 93, 98,
    
         100, 102, 135, 137, 138, 152, 158, 162
    
      B63--p. 52, 53
    
      B65--p. 32, 118, 212 
    
      B72A--p. 9
    
      B73--p. 75-77, 81
    
      B76--p. 18
    
      B81--p. 37
    
      B87--p. 16, 28
    
      B95--p. 7, 13-17, 25
    
      R18--p. 6
    
      R20--p. 7, 10, 14
    
      SP4--p. 89
    
      Map 67
    
    Muddy Peak Ls SE D2 B896
    
      B62--p. 25
    
      B63--p. 43-45
    
      B72--p. 11
    
      B72A--p. 9
    
      B73--p. 37
    
    Mud Lake, trachyandesite of
    
      B92--p. 72, 86, 87, 91
    
    Mud Springs Canyon Fm WC J1, Tr3 B1564
    
    Mule Spring Fm CA Cm1 B1350
    
    Mule Spring Ls Cm1
    
      B72A--p. 9
    
      B78--p. 16, 18, 23, 44, 45, 49-53, 57, 61, 65, 69, 70
    
      B92--p. 13, 28, 102, 132
    
      B99A--p. 43
    
      R19--p. 21
    
      SP4--p. 19
    
    Mullen Pass fm T4 GNC
    
    Mullinix Fm (Auld Lang Syne Gp) NC J1, Tr3 B1200
    
      B72A--p. 9
    
    Murdock Mountain Fm (Park City Fm) NE P1 B1564
    
      B101--p. 32, 42, 43
    
    Murry fm P1 GNC
    
    Mustang Andesite WC Q1 B1200
    
      B70--p. 40
    
      B71--p. 7, 10, 22, 23
    
      B72--p. 27
    
      B72A--p. 9
    
      R41--p. 31
    
    Muttlebury Fm NW J2, J1 B1520
    
      SP4--p. 71
    
    Narrow Canyon Ls SE M1, D3 B1200
    
      B72--p. 18
    
      B72A--p. 9
    
      B73--p. 44
    
      B77--p. 13
    
      B99A--p. 82
    
      SP4--p. 43
    
    Narrows Tuff Mbr (Leach Canyon Fm) UT T4 B1350, B1435-A
    
    Natchez Pass Fm (Star Peak Gp) NC Tr3, Tr2 B1200
    
      B59--p. 42, 129
    
      B61--p. 204
    
      B72--p. 25
    
      B72A--p. 9 
    
      B89--p. 4, 9, 14, 16, 19, 20, 40, 48, 49,
    
          56, 57, 59, 61, 65, 73,74, 84, 86, 89, 91-93
    
      B93--p. 60, 62, 63
    
      B99A--p. 94, 96
    
      R40--p. 9
    
      R41--p. 76, 77
    
    Navajo Ss AZ J B896
    
      B65--p. 30
    
      B72--p. 11
    
      B782A--p. 9
    
      B99A--p. 97
    
      SP4--p. 60, 62, 69
    
    Navajo sequence
    
      SP4--p. 67
    
    Needles Range Fm UT T3 B1200, B1435-A
    
      B72--p. 16, 17
    
      B72A--p. 9
    
      B73--p. 67, 75
    
      B85--p. 19, 20
    
      B99A--p. 108-110, 113, 119, 148
    
      B99B--p. 193
    
      R10--p. 63, 68
    
      R11--p. 6-11, 16-20, 32, 37, 53, 54
    
    Nelson Fm NE M2 B1200
    
      B101--p. 30, 31, 45, 85-87, 95, 98
    
      SP4--p. 43, 44
    
    Nelson quartz monzonite Cz3, Cz2 GNC
    
    Nenzel Rhyolite Breccia NW Tr2 B896
    
    Nevada Fm EC D2, D1 B896
    
      B64--p. 19, 23-28, 50, 55, 56, 58, 59
    
      B72--p. 15, 17, 18
    
      B72A--p. 9
    
      B73--p. 33-35
    
      B77--p. 11, 36
    
      B85--p. 10, 11, 22, 60, 85, 89
    
      B99A--p. 62, 68-79, 81, 83, 85, 152, 153
    
      B101--p. 13, 24-27, 89
    
      R20--p. 10
    
      R32--p. 25
    
      R40--p. 26, 40, 41, 85, 87, 88
    
      R41--p. 49, 56
    
      SP4--p. 34
    
      Maps 20, 50
    
    Nevada Gp D2, D1
    
      B72--p. 25
    
      B72A--p. 9
    
      B90--p. 6, 7, 9, 17, 18, 20
    
    Nevada ls
    
      B57--p. 9, 17, 26-31, 58, 60, 61, 76, 79, 82, 83,
    
          86, 88, 89, 91, 92, 94
    
    Nevada Test Site, tuffs of T5, T4, T3
    
      R20--p. 10
    
    Newark Canyon Fm EC K2, K1 B1200 
    
      B64--p. 41, 42, 47, 48, 51, 52, 55, 58, 59
    
      B65--p. 30
    
      B72--p. 21, 22
    
      B72A--p. 9
    
      B85--p. 16, 17, 27, 28
    
      B88--p. 55
    
      B99A--p. 98, 151
    
      B101--p. 50, 96
    
      R40--p. 32, 40
    
      R41--p. 56
    
      SP4--p. 71, 73, 74, 86
    
      Map 50
    
    New Pass Tuff C T4 B1520
    
      B88--p. 42, 46, 48, 52
    
      R40--p. 44
    
      R41--p. 44
    
    New York Peak Quartz Monzonite NW K2 B1520
    
    Nightingale sequence
    
      B70--p. 6, 8
    
      SP4--p. 63, 66
    
    Nine Hill Tuff WC T3 B1564
    
      Maps 1Ag, 4Cg, 59, 60, 64
    
    Ninemile Fm (Pogonip Gp) EC O2, O1 B1200
    
      B64--p. 17, 18
    
      B72A--p. 9
    
      B73--p. 24
    
      B77--p. 9, 39
    
      B78--p. 25
    
      B88--p. 10, 12, 13, 15, 16
    
      B99A--p. 46-49
    
      B99B--p. 58
    
      B101--p. 17
    
      R20--p. 10
    
    Nob Hill granodiorite Cz3, Cz2 GNC
    
    Noh Fm NE S2 B1350
    
      B72A--p. 9
    
      B101--p. 11, 90
    
      SP4--p. 31, 32
    
    Noonday Dolomite CA Z B1200
    
      B47--p. 18
    
      B72A--p. 9
    
      B77--p. 4
    
    Nopah Fm CA O1, Cm3 B1200, B1502-A 
    
      B47--p. 44, 45
    
      B65--p. 202
    
      B72A--p. 9
    
      B77--p. 8, 35, 39, 40
    
      B78--p. 25, 26, 45, 51
    
      B81--p. 92
    
      B93--p. 41, 43, 45, 46
    
      B99A--p. 41
    
      R20--p. 10
    
      R39--p. 4
    
      SP4--p. 23, 24
    
    North Creek Fm EC Q1, Q2 B1200
    
      B72--p. 14 
    
      B72A--p. 9
    
      B85--p. 21
    
    Northumberland Tuff C T3 B1520
    
      B99A--p. 124-127
    
      B99B--p. 117, 149-151
    
      R19--p. 4, 35-41
    
    Notch Peak Dolomite
    
      B101--p. 15, 17
    
    Notch Peak Fm UT O1, Cm3 B896
    
      B72--p. 7
    
      B72A--p. 9
    
      B99A--p. 41
    
    Notch Peak Ls
    
      B72--p. 14
    
      B72A--p. 9
    
      B85--p. 8
    
      R32--p. 30
    
    Nugent Tuff Mbr (Hu-pwi Rhyodacite) WC T4 B1564
    
    *Nugget Ss WY J, Tr3 B896 (in NV?)
    
      B72A--p. 9
    
      B99A--p. 97
    
      B101--p. 48, 50
    
      SP4--p. 69
    
    *Oak Spring Fm
    
      B72--p. 18
    
      B72A--p. 9
    
      B77--p. 16
    
    *Oak Spring Gp
    
      B72--p. 18
    
      B72A--p. 9
    
      B73--p. 71, 74, 75, 77
    
      R11--p. 31
    
    Oddie Rhyolite C T5 B896
    
      B72--p. 26
    
      B72A--p. 9
    
      B78--p. 37, 38, 65
    
      B92--p. 50, 55, 57, 68-72, 76, 78, 91, 99,
    
          105, 111, 114, 115, 121, 125-128
    
      B96--p. 57, 59, 64
    
      B99A--p. 122, 127, 135, 136, 138, 139
    
      B99B--p. 190
    
      B100--p. 23
    
      R19--p. 10, 12,13, 44-47
    
      R33--p. 121, 124, 125
    
    Ogden quartzite
    
      B57--p. 23
    
    Old Gregory Fm WC T4 B1200
    
      B70--p. 28
    
      B71--p. 7, 10, 13, 14, 24
    
      B83--p. 24, 40
    
      B89--p. 31
    
    O'Neill Fm (Auld Lang Syne Gp) NC Tr3 B1200 
    
      B72A--p. 9
    
      Ophir pluton
    
      B99A--p. 99, 101
    
      B99B--p. 202
    
    Oquirrh Fm UT P1, M2 B896
    
      B72--p. 7
    
      B72A--p. 9
    
      B101--p. 35, 37, 43
    
    Orange Lichen Creek, tuff of
    
      B99A--p. 114, 118
    
    Oreana Peak Fm WC J1, Tr3 B1350
    
      B75--p. 6
    
      SP4--p. 66
    
      Maps 59, 60, 64
    
    Osceola Argillite (McCoy Creek Gp) NE Z B1350
    
      B72A--p. 9
    
      B85--p. 3, 6
    
    Osceola stock
    
      R10--p. 54
    
    Osgood Mountain Quartzite NC Cm1 B1200
    
      B59--p. 9, 113, 112, 128
    
      B72--p. 24
    
      B72A--p. 9
    
      B101--p. 14
    
      R40--p. 13-15
    
      R41--p. 65, 67
    
      SP4--p. 14, 19, 40
    
      Map 50
    
    Osgood Mountains stock
    
      R10--p. 42
    
    Osobb Fm (Auld Lang Syne Gp) NC Tr3 B1200
    
      B65--p. 112
    
      B72A--p. 9
    
      B83--p. 7, 9, 31, 44
    
      B88--p. 30, 33, 86, 87
    
      B89--p. 4, 19, 20
    
      B99A--p. 96
    
      SP4--p. 66
    
    Ottawanah Rhyolite EC T3, T2 B1520
    
      B101--p. 58
    
    Ott Creek Mbr (Schoonover Fm) NE M2 B1350
    
      B72A--p. 9
    
    Overton Conglomerate Mbr (Baseline Ss) SE K B1457-A
    
    Overton Fanglomerate SE Cz1 B896, B1457-A (superseded)
    
      B62--p. 43, 45, 57, 87, 89
    
      B63--p. 51, 52
    
      B81--p. 23 
    
      R18--p. 6
    
      SP4--p. 73, 93
    
    Oxyoke Canyon Sandstone Mbr (Nevada Fm) EC D2, D1 B1520
    
      B64--p. 24, 25, 28
    
      B72--p. 22
    
      B72A--p. 9
    
      B85--p. 10
    
      B99A--p. 62, 69, 74
    
      B101--p. 26 
    
      Map 20
    
    Pablo Fm C M B1200, B1502-A
    
      B58--p. 20, 21
    
      B65--p. 27
    
      B72--p. 25-27
    
      B72A--p. 9
    
      B74--p. 5
    
      B83--p. 4, 12
    
      B88--p. 5, 27, 57
    
      B99A--p. 44, 85-87, 90-92, 94, 101, 102, 132, 141, 154, 159
    
      B99B--p. 72, 73, 76, 82, 83, 92, 95, 101, 112, 123, 124,
    
         180, 181, 183, 197, 199, 200, 203, 204, 218, 223, 224, 227   SP4--p. 42, 43, 46,
    
    50, 51, 54, 57, 63, 65
    
      Map 38
    
    Page Ranch Fm UT T4 B1200
    
      B72A--p. 9
    
      B73--p. 73, 75
    
      R11--p. 8, 10, 27, 54
    
    Pah Canyon Mbr (Paintbrush Tuff) SC T4 B1350
    
    Pah Rah Fm NW T3, T2 B1520
    
      B70--p. 22, 23, 25
    
    Pahranagat Lakes fm (Quichapa Gp) T4 GNC
    
    *Pahroc volcanics T3 GNC
    
    Pahrock sequence
    
      R11--p. 8, 19, 54
    
    Pahrump Hills Shale Mbr (Carrara Fm) SC Cm2 B1564
    
    Pahrump series Z
    
      B80--p. 6
    
    Paintbrush Tuff (Piapi Canyon Gp) SC T4 B1350, B1435-A
    
      B77--p. 16, 21, 23-25, 27, 32-34
    
      R10--p. 69
    
      R20--p. 12
    
      R26--p. 8
    
    Paiute Fm WC Q1 B1350
    
      B89--p. 39
    
      B94--p. 12
    
      R9--p. 7, 9-12
    
      R29--p. 6
    
      Map 76
    
    Paiute Ridge Mbr (Antelope Valley Ls) SC O2 B1350
    
      B72A--p. 9
    
    Pakoon Fm
    
      B72--p. 11, 18
    
      B72A--p. 9
    
      R18--p. 8
    
    Pakoon Ls AZ P1 B1200
    
      B62--p. 46, 47, 60
    
    Palisade Canyon Rhyolite NE T4 B1200, 1435-A
    
      B72A--p. 9
    
      B101--p. 63, 67
    
      R40--p. 19, 26
    
    Palisade Mesa, tuff of
    
      B99A--p. 113
    
      SP4--p. 100
    
    Palmetto Fm C O2, O1 B896
    
      B56--p. 15-19, 36, 37
    
      B58--p. 12 
    
      B72--p. 23
    
      B72A--p. 9
    
      B78--p. 5, 23-25, 27, 35, 44, 47, 48, 51-53,
    
         57, 61, 63, 64, 66, 67, 69, 72
    
      B81--p. 48, 54
    
      B90--p. 5, 6, 8-11, 16-18, 20, 21
    
      B92--p. 14, 16, 100, 102, 131, 135
    
      B98--p. 15
    
      B99A--p. 35, 39, 42-45, 56, 58, 93
    
      B99B--p. 46-48, 58, 139, 197, 209
    
      R19--p. 7, 14, 15, 17, 43, 46, 51, 53, 62
    
      R33--p. 77, 79, 81
    
      SP4--p. 23, 27, 28, 35, 39, 40
    
    Palmetto pluton
    
      B78--p. 28, 31, 48, 63, 70, 72
    
    Palmetto Wash pluton
    
      B78--p. 28, 31, 47, 72
    
    Pamlico Fm WC Tr B1564
    
      B99A--p. 96
    
      SP4--p. 66
    
    Panaca Fm EC T5 B896
    
      B65--p. 191
    
      B72A--p. 10
    
      B73--p. 75-77, 80, 81
    
      B81--p. 71-73
    
      B99B--p. 27
    
      SP4--p. 89, 92
    
    Pancake Summit Tuff EC T3 B1520
    
      B85--p. 19, 20, 62
    
      B88--p. 51
    
      B99A--p. 112, 117, 125
    
      R19--p. 37
    
    Panguipah Spring, basalt of
    
      B101--p. 61
    
    Pansy Lee Conglomerate NC Cz1, K2 B1200
    
      B59--p. 54, 91, 105, 106
    
      B72--p. 25
    
      B72A--p. 10
    
      SP4--p. 71, 73, 74, 86
    
    Panther Canyon Fm NC Tr2 B1200, B1482-A (name                                    abandoned)  
    
    B61--p. 200
    
      B72A--p. 10
    
      B72--p. 25
    
      B88--p. 29
    
    Panther Canyon mbr (Augusta Mountain Fm)
    
      SP4--p. 57
    
    Papoose Lake Mbr (Bonanza King Fm) C Cm2 B1350
    
      B72A--p. 10
    
    Paradise Valley Chert NC Cm3 B1350
    
      B72A--p. 10
    
      SP4--p. 21, 23, 37
    
    Park City Fm UT P2, P1 B896
    
      B54--p.14 
    
      B101--p. 40, 42, 43
    
      R40--p. 38
    
      R41--p. 55
    
    Park City Gp P2, P1
    
      B72--p. 12, 15
    
      B72A--p. 10
    
      B85--p. 15, 28
    
      B99A--p. 91
    
      B101--p. 32, 40-43
    
      SP4--p. 53
    
    Parker Spring Fm (Pogonip Gp) EC O1 B1350
    
    Parker Spring Ls
    
      B72A--p. 10
    
    Patsy Mine Volcanics AZ T4 B1350
    
      SP4--p. 102
    
      Maps 3Ag, 45
    
    Patterson Pass Shale EC Cm2 B1350
    
      B72A--p. 10
    
      B73--p. 16
    
      B85--p. 6, 7
    
      B99A--p. 38
    
    Payette Fm ID T5, T4 B1200
    
    Peasley Ls EC Cm2 B1200
    
      B47--p.33, 34
    
      B62--p. 18
    
      B63--p. 37, 40-42
    
      B72A--p. 10
    
    Peasley Mbr (Highland Peak Fm) Cm2
    
    Peavine Canyon, tuff of
    
      B99A--p. 127, 132, 133
    
      B99B--p. 73
    
    Peavine sequence
    
      B70--p. 6-8
    
      Maps 4Ag, 4Cg, 4Dg
    
    Peers Spring Fm EC M2 B896
    
      B72--p. 14, 16, 17
    
      B72A--p. 10
    
      B73--p. 49
    
    Pequop Fm
    
      B72--p. 7, 8, 14, 15, 21
    
      B72A--p. 10
    
    Pequop Fm (Arcturus Gp) NE P1 B1200
    
      B72A--p. 10
    
      B101--p. 32, 36, 37, 39, 40, 90, 98, 99, 101
    
      R32--p. 30
    
      R41--p. 55
    
    Pequop Fm (Carbon Ridge Gp) P1
    
      B85--p. 15
    
    Perish Spring Dacite EC Q B1350
    
      B99A--p. 108, 111
    
    Perkins Canyon Fm C O B1200
    
      B72--p. 22, 23
    
      B72A--p. 10
    
      B99A--p. 46, 47, 56, 59, 60
    
      B99B--p. 158
    
      SP4--p. 25, 27 
    
    Petes Summit Fm (Clipper Canyon Gp) C O2, O1 B1200
    
      B72A--p. 10
    
      B99A--p. 51
    
    Petrified Forest Mbr (Chinle Fm) AZ Tr3 B1200
    
      SP4--p. 64
    
    Petrified Spring Tuff (Benton Spring Gp) WC T3 B1564
    
    Petroglyph Cliff Ignimbrite EC T3 B1350
    
      B72--p. 16
    
      B72A--p. 10
    
      R11--p. 6, 8, 10, 19, 20, 32, 33, 40, 44, 54
    
    Phosphoria Fm ID P2, P1 B896
    
      B65--p. 161
    
      B72A--p. 10
    
      B78--p. 26
    
      B99A--p. 91
    
      B101--p. 32, 38-43, 46, 48, 87, 90
    
      R18--p. 20
    
    Phosphoria Gp
    
      B72--p. 8
    
      B72A--p. 10
    
    Piapi Canyon Fm C T4 B1350
    
      B72A--p. 10
    
      B77--p. 16
    
    Piapa Canyon Gp SC T4 B1435-A
    
    Piermont Fm EC Z B1200
    
    Piermont Gp
    
      B72--p. 14, 15, 20
    
      B72A--p. 10
    
    Pillar Spring, lavas of
    
      R19--p. 23, 25, 29, 30, 32
    
    Pilot Shale EC M1, D3 B896
    
      B57--p. 9, 31, 32, 58, 83, 88, 89, 91, 92
    
      B62--p. 28
    
      B64--p. 29, 30
    
      B72--p. 8, 14, 16, 18, 21, 22
    
      B72A--p. 10
    
      B73--p. 32, 36, 42-44, 48, 83, 84
    
      B85--p. 11, 27, 59, 74, 84, 85, 90, 96
    
      B88--p. 19, 54, 78
    
      B99A--p. 62, 68, 72, 77-79, 81, 82, 84, 152
    
      B101--p. 13, 28, 33
    
      R29--p. 8, 14
    
      R32--p. 24, 25, 30, 57
    
      R36--p. 14, 16-19, 23
    
      R40--p. 38-41, 85-88, 91, 99, 102
    
      R41--p. 51, 53, 55
    
      SP4--p. 41, 43
    
      Maps 20, 35, 50
    
    Pinecone Fm C O B1200
    
      B99A--p. 47, 58, 81
    
      B99B--p. 158
    
    Pine Nut Mbr (Gold Hill Fm) C Cm B896
    
    Pinto Basin Tuff Mbr (Pinto Peak Rhyolite) EC T3 B1520
    
    Pinto Peak Rhyolite EC T3 B1520
    
      R32--p. 25 
    
    Pioche Fm EC Cm2, Cm1 B896
    
      B101--p. 15
    
    Pioche Shale Cm2, Cm1
    
      B47--p. 19, 23-25
    
      B62--p. 14, 16-18, 20
    
      B62--p. 37-40
    
      B64--p. 7, 9, 12
    
      B72--p. 12, 20, 24
    
      B72A--p. 10
    
      B73--p. 13-16, 26, 81
    
      B85--p. 4, 6, 7, 26, 27, 31, 43, 50, 54, 57, 58, 61, 96
    
      B88--p. 5, 10
    
      B99A--p. 33, 37
    
      B99B--p. 144
    
      B101--p. 15, 80, 97
    
      R29--p. 6
    
      SP4--p. 23
    
      Maps 35, 50
    
    Piper Peak flows T GNC
    
    Piute Fm SE D2, D1 B1350
    
      B72--p. 18
    
      B72A--p. 10
    
    Plympton Fm (Park City Gp) UT P2, P1 B1200
    
      B72--p. 21
    
      B72A--p. 10
    
      B85--p. 15, 16
    
      B101--p. 32, 40-43
    
      R32--p. 30
    
    Pogonip Fm EC O2, O1 B896
    
      B54--p. 10, 15
    
      B57--p. 9, 16, 19-24, 65, 79, 97, 105, 109
    
      B61--p. 70
    
      B62--p. 66, 78
    
      B64--p. 40
    
      B72--p. 15
    
      B72A--p. 10
    
      R41--p. 58
    
    Pogonip Gp O2, O1
    
      B62--p. 21, 22, 74, 77, 79
    
      B64--p. 17-19, 58, 59, 82,92
    
      B72--p. 8, 12, 15, 18
    
      B72A--p. 10
    
      B73--p. 21, 24-27, 83, 84
    
      B77--p. 9, 14, 39
    
      B78--p. 25-26, 45, 51
    
      B81--p. 68
    
      B85--p. 4, 8, 30, 44, 85
    
      B88--p. 10, 112, 13, 58
    
      B90--p. 9, 17
    
      B93--p. 21, 48, 53
    
      B99A--p. 39, 41, 42, 46-52, 59, 60, 66,
    
         102, 145, 148, 149, 152, 153
    
      B99B--p. 11, 58, 82, 158, 160, 229
    
      B101--p. 10, 13, 17-20, 22, 78, 80, 83, 98 
    
      R20--p. 10
    
      R26--p. 7
    
      R32--p. 30, 42, 56
    
      R33--p. 104
    
      R40--p. 41
    
      R41--p. 49, 51
    
      SP4--p. 25, 27, 28
    
                    Map 50
    
    Pogonip Ls O2, O1
    
      B50--p. 41, 91, 213
    
      B85--p. 52, 80
    
      B101--p. 17, 87
    
      R18--p. 8
    
      R32--p. 52
    
      R41--p. 58
    
    Poinsettia Tuff Mbr (Hu-pwi Rhyodacite) WC T4 B1564
    
    Pole Canyon granodiorite K GNC
    
    Pole Canyon Ls EC Cm2 B1200
    
      B72A--p. 11
    
      B73--p. 14, 16, 18, 19
    
      B85--p. 4, 6, 43, 44, 49, 57, 58, 61, 76, 88
    
      B99A--p. 33, 35, 37-39
    
      R32--p. 29
    
    Pole Creek Dacite NE T4 B1200, B1457-A
    
      B72--p. 20
    
      B72A--p. 11
    
      B101--p. 63, 65
    
    Poleta Fm CA Cm1 B1350
    
      B72A--p. 11
    
      B78--p. 11-14, 22, 45-47, 49, 50, 53, 60, 64, 
    
         66, 69, 70, 72
    
      B84--p. 12, 13, 17
    
      B92--p. 13, 102
    
      B99A--p. 36
    
      SP4--p. 19
    
    Pony Canyon gp
    
      SP4--p. 71
    
    Pony Trail Gp NC J3 B1350
    
      B72--p. 21
    
      B72A--p. 11
    
      SP4--p. 67, 70
    
      Map 50
    
    Poorman Peak Fm NE P2 B1350
    
      B68--p. 14, 15
    
      B101--p. 43
    
    Popovich Fm NE D B1350
    
      B64--p. xi, 27, 92
    
      R32--p. 40-42
    
      R33--p. 102
    
    Portage Canyon Mbr (Laketown Dolostone) UT S2 B1564
    
    Porter Peak Ls NE Cm3, Cm2 B1350
    
      B60--p. 11, 12, 14-17, 37
    
      B72--p. 20
    
      B72A--p. 11
    
      B81--p. 45
    
      B101--p. 16, 17
    
    Pott Hole Valley, tuff of 
    
      B99A--p. 118, 119
    
    Pozo Fm C T4 B896
    
      B78--p. 36
    
      R19--p. 51, 55, 56
    
    Preachers Fm WC J2 B1350
    
      B75--p. 6
    
      SP4--p. 66, 69, 71
    
      Map 74
    
    Preble Fm NC Cm3, Cm2 B1200
    
      B59--p. 10, 94, 112-115, 128
    
      B72--p. 24
    
      B72A--p. 11
    
      B89--p. 5, 40
    
      B98--p. 15, 19
    
      R32--p. 20
    
      R40--p. 13-15, 52-54
    
      R41--p. 65, 67
    
      SP4--p. 21, 23, 40
    
    Prida Fm (Star Peak Gp) NC Tr3, Tr2, Tr1 B1200
    
      B72A--p. 11
    
      B83--p. 32
    
      B84--p. 56, 57
    
      B89--p. 3, 9, 11, 14, 15, 18, 19, 40, 48, 49, 59,
    
          61, 62, 79, 84-86, 91, 93, 97, 98
    
      B93--p. 60, 62
    
      R41--p. 76
    
    Pritchards Station, tuff of
    
      B99A--p. 113
    
    Proskey Fm WC T3 B1350
    
    Prospect Mountain Quartzite EC Cm1, Z B896
    
      B47--p. 19, 20
    
      B50--p. 86
    
      B54--p. 10
    
      B60--p. 10, 13, 14, 34, 37, 44, 47, 49
    
      B61--p. 50, 227
    
      B62--p. 14-16
    
      B63--p. 37-39, 59
    
      B64--p. 7, 9, 19
    
      B67--p. 8-11, 14, 20, 21, 23, 28-31, 33, 34
    
      B68--p. 6, 8-11, 17, 19
    
      B72--p. 15, 19
    
      B72A--p. 11
    
      B73--p. 7, 12,-14, 26, 75
    
      B81--p. 45, 73
    
      B85--p. 3, 6, 26, 28, 31, 37, 49, 51, 53, 54, 58, 61, 62
    
      B88--p. 5, 10
    
      B99A--p. 33, 35, 38
    
      B99B--p. 192, 228
    
      B101--p. 9, 13-17, 75, 78-80, 83, 87, 100
    
      R32--p. 27, 52
    
      SP4--p. 14, 19, 20
    
      Maps 35, 50
    
    Prospect sequence
    
      B99A--p. 60 
    
    Prow Pass Mbr (Crater Flat Tuff) SC T4 B1564
    
    Pueblo Range series NW T4 B896
    
    Pueblo Range volcanics T4 ?
    
    Pumpernickel Fm NC P1, Pa B1200
    
      B59--p. 21, 85, 91, 94, 128
    
      B61--p. 184
    
      B72--p. 25
    
      B72A--p. 11
    
      B88--p. 25, 27, 29, 31, 56, 58, 66
    
      B89--p. 5-7, 17, 18, 40, 55-57, 62, 64, 65, 94, 95, 104
    
      B99B--p. 202
    
      B101--p. 46
    
      R32--p. 46, 47
    
      R33--p. 89
    
      R36--p. 4, 5
    
      R40--p. 15, 18, 73
    
      R41--p. 65
    
      SP4--p. 49-51, 54, 57
    
      Map 50
    
    Pyramid fm
    
      B70--p. 28
    
    Pyramid sequence
    
      B70--p. 28-30
    
      Maps 4Cg, 4Dg
    
    Pyramid Shale Mbr (Carrara Fm) CA Cm2, Cm1 B1564
    
    Quartet Dome flows T GNC
    
    Queantoweap Ss AZ P1 B1200
    
      B62--p. 36
    
      B63--p. 47, 60, 80
    
      B72--p. 11
    
      B72A--p. 11
    
      B73--p. 61
    
      SP4--p. 51
    
    Quichapa Fm
    
      B73--p. 71, 75
    
    Quichapa Gp UT T4, T3 B1200
    
      B72A--p. 11
    
    Quilici Fm NE Pa2 B896
    
      B72A--p. 11
    
      B101--p. 32, 36
    
    Quinn River Fm NW Tr2 B1350
    
      B59--p. 41
    
    Rabbit Hill Ls C D1 B1200
    
      B64--p. 23, 24
    
      B72A--p. 11
    
      B88--p. 17, 18
    
      B99A--p. 56, 63, 64, 67, 75, 79-81, 86
    
      B101--p. 24
    
      SP4--p. 32
    
    Rabbit Spring Fm C T5, T4 B896
    
      B78--p. 34, 36
    
      R19--p. 51, 56
    
    Raiff Ls EC Cm3, Cm2 B1200
    
      B85--p. 6
    
      B72--p. 14
    
      B72A--p. 11
    
    Railroad Bridge Basalt NW T5 B896
    
    Railroad mining district stock
    
      B101--p. 76, 77
    
      R10--p. 31
    
    Railroad stock
    
      B99A--p. 98, 100
    
      B99B--p. 79, 81
    
    Railroad Valley Rhyolite EC T3 B1350
    
      B99A--p. 108, 109
    
    Rainbow Gardens Fm SE K B1520
    
    Raine Ranch Fm NE T4 B1200
    
      B72A--p. 11
    
    Rainier Mesa Mbr (Oak Spring Fm)
    
      B72--p. 18
    
    Rainier Mesa Mbr (Piapi Canyon Fm)
    
      B72--p. 18
    
      B72A--p. 11
    
    Rainier Mesa Mbr (Timber Mountain Tuff) EC T4 B1350
    
    Rainstorm Mbr (Johnnie Fm) SE Z B1350
    
    Ralston Valley, tuff of
    
      B92--p. 38, 39, 89
    
    Ramsey fm T1 GNC
    
    Rand Ranch Fm T3
    
      B64--p. 42
    
      SP4--p. 71
    
    Ranger Mountain Mbr (Antelope Valley Ls) SE O2 B1350
    
      B72A--p. 11
    
    Raspberry Fm (Auld Lang Syne Gp) NC Tr3 B1200
    
      B59--p. 46, 90, 124
    
      B61--p. 83
    
      B72--p. 25
    
      B72A--p. 11
    
      B89--p. 4, 19, 21
    
      R40--p. 11
    
      R41--p. 76
    
      SP4--p. 66
    
    Rattlesnake Spring Granodiorite NW K2 B1520
    
    Ratto Spring Rhyodacite EC T3 B1520
    
      R40--p. 32
    
    Ravenswood pluton
    
      B88--p. 33
    
    Rawhide Fm C T3 B1520
    
    Red Mountain, basalt of
    
      B99B--p. 190
    
      R19--p. 9
    
    Red Mountain, trachyandesite of
    
      R33--p. 121
    
    Red Mountain, tuff of
    
      B99B--p. 152, 153
    
    Red Pass Ls Mbr (Carrara Fm) CA Cm2 B1564
    
    Red Rock Ls NW Tr B1200
    
    Redrock Valley Tuff SC T4 B1564
    
    Red Wash volcanics
    
      R33--p. 74
    
    Reed Dolomite CA Z B1200
    
      B72A--p. 11
    
      B77--p. 5
    
      B78--p. 5, 7-9, 42, 44-46, 48-50, 52, 53, 64, 70, 71
    
      B84--p. 21, 23, 25, 30, 31, 33-35, 38-42, 45-47, 50,                                           51  
    
    B92--p. 10, 11, 12, 24, 26, 44, 102, 133
    
      R19--p. 21
    
      SP4--p. 19
    
    Rencher Fm UT T4 B1200
    
      R11--p. 6, 8, 27
    
    Reno, gravel of
    
      R22--p. 2
    
    Rescue Canyon Rhyolite EC T B1520
    
    Reservation Hill Fm NC P, Pa B1520
    
      B101--p. 32, 45, 46, 86, 87, 95, 98
    
      SP4--p. 50, 54, 59
    
    *Retort Phosphatic Shale Tongue MT P2 B1200
    
      B72A--p. 11
    
      B101--p. 43
    
    Rex Chert Mbr (Phosphoria Fm) ID P2 B896
    
      B72--p. 8
    
      B72A--p. 11
    
      B101--p. 32, 40, 42,43
    
    Ribbon Cliff, lavas of
    
      R19--p. 24, 29, 30, 32
    
    Rib Hill Fm EC P1 B1200
    
      B72--p. 14
    
      B73--p. 56
    
      B101--p. 32, 36, 37
    
    Rib Hill Ss P1
    
      B72--p. 15
    
      B72A--p. 11
    
      B85--p. 13-15, 28, 72
    
      B99A--p. 89, 90
    
      B99B--p. 8, 9
    
      B101--p. 46
    
      R32--p. 57
    
      R40--p. 38
    
      R41--p. 53
    
    Richmond Mountain Andesite EC T3 B1520
    
      B99A--p. 116, 117
    
      R40--p. 40
    
      R41--p. 56
    
    Riepe Spring Ls (Arcturus Gp) EC P1 B1350
    
      B72--p. 14, 15
    
      B85--p. 13-15, 27, 73, 74
    
      B99A--p. 90
    
      B101--p. 32, 37, 98
    
      R40--p. 38, 39
    
      R41--p. 53, 55
    
    Riepe Spring Ls (Ferguson Mountain Fm)
    
      B72A--p. 11
    
      R32--p. 30, 57
    
      Riepetown Fm
    
      B72--p. 14, 15
    
      B72A--p. 11
    
    Riepetown Mbr (Ferguson Mountain Fm)
    
      B72A--p. 11
    
    Riepetown Ss (Arcturus Gp) EC P1 B1200
    
      B72--p. 7
    
      B101--p. 37, 40
    
      R32--p. 30
    
    Riepetown Ss (Carbon Ridge Gp) P1
    
    Rio Tinto Fm NE M B1200
    
      B54--p. 116, 120, 122
    
      B67--p. 12, 13, 33
    
    Robbers Roost fm P1 GNC
    
    Roberts Mountains Fm NC D1, S B1200
    
      B57--p. 25, 79
    
      B62--p. 24
    
      B64--p. xi, 21-24, 53, 55, 56, 59, 62, 63, 72, 93, 94,  97  
    
      B72--p. 8, 22
    
      B72A--p. 11
    
      B73--p. 30, 31 
    
      B77--p. 10
    
      B85--p. 8
    
      B88--p. 14, 16-19, 53, 78, 91
    
      B93--p. 43, 44
    
      B99A--p. 46, 51, 53, 55, 57, 58, 60-67, 79, 80, 86,  155 
    
      B99B--p. 86, 89
    
      B101--p. 13, 22-24, 45, 97
    
      R32--p. 19, 23, 40-43
    
      R33--p. 102-107
    
      R40--p. 23, 24, 41, 56-64, 69, 76, 77
    
      R41--p. 49, 60, 61
    
      SP4--p. 29, 31, 32
    
      Map 50
    
    Robinson Creek Dacite NE T5 B1200
    
      B101--p. 63, 65
    
    Rochester Rhyolite (Koipato Gp) NW Tr1 B1200
    
      B72A--p. 11
    
      B89--p. 10, 12, 17, 18, 22, 59, 61, 84-86, 91, 93, 98
    
      B93--p. 60
    
      R41--p. 77
    
      SP4--p. 65
    
    Rocket Wash Mbr (Thirsty Canyon Tuff) SC T4 B1520
    
      R19--p. 24-26, 29, 30, 33
    
    Rocky Canyon Granite NW J, K B896
    
    Rocky Canyon stock K2
    
      R40--p. 9
    
      R41--p. 77
    
    Rogers Spring Ls SE M B896
    
      B62--p. 26, 27, 90, 129
    
      B63--p. 44, 45, 55, 56, 60
    
      B72--p. 11
    
      B72A--p. 11
    
      SP4--p. 43
    
    Round Mountain pluton
    
      B99A--p. 101, 102
    
      B99B--p. 46-48, 115-117, 176
    
    Round Mountain, tuff of
    
      B100--p. 5, 19, 23, 23, 61
    
      R41--p. 132-134
    
    Round Rock Mbr (Esmeralda Fm) C T4 B896
    
      B72--p. 26
    
      B72A--p. 11
    
      B99A--p. 126, 136
    
      B100--p. 23
    
    Ruby Range batholith
    
      B54--p. 16
    
    Ruth ls P1
    
      B85--p. 13
    
    Rye Patch Fm NW Q1 B1350
    
      B89--p. 39
    
      B94--p. 12
    
      R9--p. 7-10
    
      R29--p. 6
    
    Rye Patch, tuff of
    
      B92--p. 38-41, 43-45, 89, 105
    
      B99B--p. 109
    
    Sacramento Pass volcanics T GNC
    
      R10--p. 73, 74
    
    Saddle Mountain Andesite EC T3 B1350
    
      B99A--p. 108
    
    Safford Canyon Fm NE T4, T3 B1200
    
      B72A--p. 11
    
    Sailor Canyon Fm J2, J1
    
      B99A--p. 98
    
    Saline Valley Fm CA Cm1 B1350
    
      B72A--p. 11
    
      B78--p. 14, 16
    
      B92--p. 13
    
    Salt Lake Fm UT T5, T4 B896
    
      B72A--p. 11
    
      B81--p. 44
    
    Salyer Fm SE T4 B1200
    
      B77--p. 23, 32, 41
    
      R10--p. 69
    
    Sams Spring (Clipper Canyon Gp) C O2 B1200
    
      B72A--p. 11
    
      B99A--p. 51, 56
    
    San Antonio Mountains, limestone of
    
      B99A--p. 84
    
    Sandgrass Andesite C T4 B896
    
      B50--p. 172
    
      B99A--p. 130
    
      R19--p. 43
    
    Sands Granite CA J B1350
    
    Sandstorm Fm C T3 B896
    
      B78--p. 35
    
      R19--p. 14, 16, 53, 56, 57, 59, 64, 65
    
      R33--p. 79
    
    Sandstorm Rhyolite
    
      B78--p. 34
    
      R19--p. 14, 53
    
    Santiago Canyon Tuff WC T3 B1564, B1482-A
    
      Maps 1Ag, 59
    
    Saulsbury Wash, tuff of
    
      B99A--p. 120, 121, 155
    
      B99B--p. 89, 107-109, 139
    
    S Bar S Fm (Lahontan Valley Gp) NW Q1 B1350
    
      R9--p. 11-13
    
    Schoonover Fm NC Pa, M B1350
    
      B60--p. 24-26, 39, 51, 52
    
      B72--p. 20 
    
      B72A--p. 11
    
      B101--p. 31, 32, 45, 47, 86, 88, 95
    
      SP4--p. 42, 43, 45, 50, 59
    
    Scossa Slate NW J B896
    
    Scott Canyon Fm NC Cm2, Cm1 B1200, 1502-A
    
      B61--p. 89, 92, 94
    
      B72A--p. 11
    
      B88--p. 19, 20, 23, 66
    
      R32--p. 20, 45-47
    
      R33--p. 89, 90, 94
    
      R36--p. 4
    
      R40--p. 18
    
      R41--p. 65
    
      SP4--p. 14, 16, 19, 35
    
    Scotty Wash Fm
    
      B72A--p. 11
    
    Scotty Wash Mbr (Chainman Fm) EC M2 B896
    
      R18--p. 9
    
    Scotty Wash Quartzite M2
    
      B72--p. 14
    
      B72A--p. 12
    
      B73--p. 44, 48, 49, 51-55
    
      B101--p. 31
    
      R32--p. 26
    
    Scrugham Peak flows T GNC
    
    Secret Canyon Fm
    
      B57--p. 9-15, 53, 78, 79
    
      Map 35
    
    Secret Canyon Shale EC Cm2 B896
    
      B57--p. 9-15, 62, 79
    
      B64--p. 7, 13-15, 83
    
      B72--p. 14, 15
    
      B72A--p. 12
    
      B73--p. 16
    
      B85--p. 4, 6
    
      B88--p. 11
    
      B99A--p. 38
    
      B101--p. 15
    
      R32--p. 52
    
      R40--p. 81
    
      SP4--p. 23
    
      Map 50
    
    Seetoya sequence
    
      B101--p. 10
    
    Sehoo Fm (Lahontan Valley Gp) WC Q2, Q1 B1350
    
      B89--p. 39
    
      B94--p. 12
    
      R9--p. 11, 14-17
    
      R40--p. 49
    
      R41--p. 37
    
      Map 76
    
    Seligman stock
    
      B57--p. 9, 11, 49-51, 53, 55, 56, 60, 105, 110
    
      R10--p. 52
    
    Sentinel Dolomite
    
      B73--p. 35
    
    Sentinel Mountain Dolomite Mbr (Nevada Fm) EC D2 B1200
    
      B64--p. 24, 25
    
      B72--p. 22
    
      B72A--p. 12
    
      B99A--p. 71, 74
    
      B101--p. 26
    
      Map 20
    
    Seventy Six Basalt NE T4, T3 B1350
    
      B72--p. 20
    
      B72A--p. 12
    
      B101--p. 61
    
    Sevy Dolomite WC D2, D1 B896
    
      B62--p. 24, 25
    
      B72--p. 8, 14, 15, 17, 18
    
      B72A--p. 12
    
      B85--p. 10, 11, 78
    
      B99A--p. 62, 67-71, 73, 74, 76, 145, 149
    
      B101--p. 21, 24-27
    
      R18--p. 15, 20, 21
    
      R32--p. 30
    
      SP4--p. 28, 34
    
      Map 35
    
    Shamrock batholith Map 77
    
    Shaver sequence
    
      B101--p. 74
    
    Sheep Pass Fm NE T2, K2 B1200, B1502-A
    
      B62--p. 47
    
      B65--p. 31
    
      B72--p. 14-16
    
      B72A--p. 12
    
      B73--p. 65, 67, 68
    
      B85--p. 17, 28, 81
    
      B99A--p. 98, 103, 105, 106, 108, 111, 151
    
      B99B--p. 37, 79, 228
    
      R10--p. 68, 74
    
      R11--p. p. 8
    
      R18--p. 16, 20, 22, 25, 35-37
    
      R29--p. 11-14
    
      SP4--p. 87-89, 105
    
      Map 52
    
    Sherwin Till CA Q1 B1200
    
    Shinarump Conglomerate
    
      B72A--p. 12
    
      B101--p. 491
    
      R20--p. 10
    
    Shinarump Mbr (Chinle Fm) UT Tr3 B896
    
      B65--p. 29
    
      B73--p. 64, 65
    
      B81--p. 22, 23
    
      SP4--p. 64
    
    Shingle Ls (Pogonip Gp) EC O2, O1 B1350
    
      B72A--p. 12
    
    Shingle Creek Quartzite (McCoy Creek Gp) EC Z B1350
    
      B72A--p. 12
    
    Shingle Pass Ignimbrite
    
      B72--p. 16
    
      R11--p. 6, 8, 9, 20, 21, 32
    
    Shingle Pass Tuff EC T3 B1200
    
      B77--p. 25
    
      B85--p. 19-21
    
      B92--p. 41
    
      B99A--p. 104, 108, 110, 111, 114, 118,
    
        120, 123, 125, 126, 128, 148, 153
    
      B99B--p. 109, 193, 216
    
    Shnabkaib Shale Mbr (Moenkopi Fm) UT Tr1 B896
    
      B72A--p. 11
    
    Shoshone fm 
    
      B91--p. 31
    
    Shwin Fm C Cm2 B1350
    
      B72A--p. 11
    
      B88--p. 11, 16
    
      R40--p. 14
    
    Sidehill Spring fm
    
      B99A--p. 33
    
    Siebert Fm
    
      B65--p. 191
    
      B72--p. 23
    
      B72A--p. 12
    
      B92--p. 25, 32, 43, 45, 46, 49, 50, 55, 58, 59,
    
           62, 64-69, 71, 72, 76, 83, 86, 91, 103, 105,
    
           111, 115, 116, 121, 125,  127, 133, 136
    
      B99A--p. 127
    
      B99B--p. 148
    
      R19--p. 69
    
      R33--p. 121-125
    
    Siebert Tuff C T4 B896
    
      B48--p. 12
    
      B72--p. 26
    
      B72A--p. 12
    
      B78--p. 32-34, 36, 59, 65
    
      B81--p. 49, 50, 90, 91
    
      B92--p. 49, 62
    
      B96--p. 5, 11-13, 57, 59, 63-67
    
      B99A--p. 135-139, 158
    
      B99B--p. 27, 73, 124
    
      R19--p. 12-14, 20, 21, 44-47, 51, 52, 55, 56, 59, 60
    
      R35--p. 3, 5, 8
    
      SP4--p. 92
    
    Sierra Nevada batholith
    
      B70--p. 9
    
      B75--p. 3, 8, 16, 18, 23, 29
    
      B92--p. 100
    
      SP4--p. 73
    
      Map 63
    
    Sierra Springs Tuff Mbr (Pinto Peak Rhyolite) EC T3 B1520
    
    Sikikareh Mountain, slate of
    
      B101--p. 85, 95
    
    Silver Ace, rhyolite of
    
      B92--p. 43, 105
    
    Silver Creek pluton
    
      B101--p. 76
    
    Silverhorn Dolomite EC D2 B896
    
      B72--p. 16
    
      B72A--p. 12
    
      B73--p. 36, 37, 83
    
      B76--p. 22
    
    Silver King Dolomite Mbr (Bonanza King Fm) CA Cm2 B896
    
      B72A--p. 12
    
    Silver Peak Fm (abandoned)
    
      B78--p. 5
    
    Silver Peak lava T GNC
    
    Silver Spring stock
    
      B99A--p. 98
    
      B99B--p. 79, 81
    
    Silver Zone Pass pluton
    
      B101--p. 75, 97
    
    Simon Quartz Keratophyre C Tr2 B896
    
    Simonson Dolomite UT D2 B896
    
      B61--p. 225
    
      B72--p. 8, 14, 15, 17, 18
    
      B72A--p. 12
    
      B73--p. 30, 32, 34-36
    
      B85--p. 10, 11, 30, 91
    
      B93--p. 51
    
      B99A--p. 62, 68-76, 145, 149
    
      B99B--p. 162-165
    
      B101--p. 24-27, 78
    
      R18--p. 15, 20, 21
    
      R32--p. 29, 30
    
      R40--p. 40
    
      SP4--p. 34
    
      Map 35
    
    Singas Fm (Auld Lang Syne Gp) NC Tr3 B1200
    
      B72A--p. 12
    
    Singatse Tuff WC T3 B1564
    
      R27--p. 5-12, 16, 18-21, 26, 27
    
      Maps 60, 64,77
    
    Sixmile Canyon, tuff of
    
      B99A--p. 123
    
      B99B--p. 152
    
    Skinner Canyon Granite EC T2, T1 B1520
    
    Skull Creek pluton
    
      B101--p. 76
    
    Slaven Chert NC D3, D2, D1 B1200, B1482-A
    
      B88--p. 22, 62, 64, 65, 75, 78-80, 87
    
      B98--p. 15, 36
    
      B99A--p. 62, 81
    
      B101--p. 13
    
      R32--p. 19, 22, 49
    
      R40--p. 16, 19
    
      R41--p. 60, 61
    
      SP4--p. 34, 35
    
      Map 50
    
    Slide Creek Gravel NE T4 B1350
    
      B72--p. 20
    
      B72A--p. 12
    
      B101--p. 62
    
    Smelser Pass Mbr (Augusta Mountain Fm) NC Tr3, Tr2 B1564
    
    Smith Creek seqence
    
      B101--p. 20
    
    Smokey Mbr (Nopah Fm) SC Cm3 B1350
    
    Smokey Mbr (Windfall Fm) Cm3
    
      B72A--p. 12
    
    Snell Creek marble
    
      B101--p. 78
    
    Snow Canyon Fm (Valmy Gp) NE O1 B1350
    
      B101--p. 12
    
      R40--p. 22, 23, 58-60
    
    Snow Creek trondhjemite K GNC
    
    Sod House Tuff (Pony Trail Gp) NC J3 B1350
    
    Soldier Meadow Tuff NW T4 B1520
    
    *Sonoma Range Fm O3 (part of Valmy Fm?)
    
      B59--p. 14
    
      B72--p. 26
    
      B72A--p. 22
    
      B89--p. 6
    
    South Hill Ss Mbr (Nevada Fm) EC D2 B1520
    
      B99A--p. 74
    
    South Ridge Ss C P1 B1200
    
    South Willow Fm NW T3 B1520
    
      B70--p. 10-12, 15
    
      B81--p. 98
    
    Spearhead Mbr (Thirsty Canyon Tuff) C T4 B896
    
      B72--p. 18
    
      B72A--p. 12
    
      R10--p. 68
    
      R19--p. 14, 21, 23-26, 29, 30, 32, 33, 51, 52, 55, 56,                                         59
    
    Spillway Breccia AZ T4 B1200
    
    Spirit Mountain pluton
    
      B81--p. 6
    
    Spotted Range, dolomite of
    
      B77--p. 11
    
    Spring Mountain Fm SE P1 B1200
    
      B72--p. 12, 18
    
      B72A--p. 12
    
    Stanislaus Fm CA T4 B1350
    
    Stanislaus Gp T4
    
    Star Peak Gp NW Tr3, Tr2, Tr1 B896
    
      B61--p. 155, 173, 178, 186, 191, 201
    
      B65--p. 28
    
      B89--p. 10, 14, 20, 36, 91, 93
    
      R41--p. 76
    
      SP4--p. 57, 63, 65, 66
    
      Map 50
    
    St. Cassian fm Tr3 GNC
    
    Steamboat Andesite Mbr (Lousetown Fm) Q1, T5 GNC
    
    Steamboat Hills Rhyolite WC Q1 B1200
    
      B70--p. 40
    
      B72--p. 27
    
      B72A--p. 12
    
      Map 5Ag
    
    Stella Lake Quartzite (McCoy Creek Gp) EC Z B1350
    
      B72A--p. 12
    
      B85--p. 6, 79
    
      SP4--p. 18
    
    Step Ridge Ls
    
      B72A--p. 12
    
    Step Ridge Mbr (Highland Peak Fm) EC Cm2 B1350
    
    Stinking Spring Conglomerate EC Cz2 B1350
    
    Stirling Quartzite SE Z B896
    
      B47--p. 19
    
      B62--p. 13, 15, 67, 73, 75, 76
    
      B72A--p. 12
    
      B73--p. 12, 14
    
      B77--p. 4, 5, 14, 16, 30, 31, 34, 36, 38
    
      B81--p. 94
    
      B92--p. 12
    
      R20--p. 10
    
      SP4--p. 14, 19, 21
    
    Stockade Wash Mbr (Paintbrush Tuff) SC T4 B1350
    
    Stockade Wash Mbr (Piapa Fm) T4 GNC
    
    *Stockade Wash Mbr (Oak Spring Fm) B72--p. 18
    
      B72A--p. 12
    
    Stockade Wash Tuff SC T4 B1435-A
    
    Stoneberger Fm
    
      B72--p. 22
    
      B72A--p. 12
    
    Stoneberger Shale (Pogonip Gp) C O2 B1200
    
      B99A--p. 46, 49, 59
    
    Stone Cabin Fm EC T3 B1200
    
      B85--p. 19, 20, 22
    
      B99A--p. 105, 106, 108, 109, 111-117, 125, 132
    
      R11--p. 6, 8, 9, 12, 13, 32
    
    Stone Cabin Tuff T3
    
      R19--p. 37
    
    Storff Fm NC S B1350
    
      B60--p. 12, 19, 20
    
      B72--p. 20
    
      B72A--p. 12
    
      B101--p. 44, 45
    
      SP4--p. 31, 32
    
    Strathearn Fm NC P1, Pa3 B1200
    
      B72--p. 21
    
      B72A--p. 12
    
      B85--p. 27
    
      B99A--p. 87
    
      B101--p. 32, 36-38, 44, 80, 83-90
    
      R32--p. 18
    
      R40--p. 24
    
      SP4--p. 46, 48, 53, 55
    
      Map 50
    
    Strawberry Creek Fm (McCoy Creek Gp) NE Z B1350
    
      B72A--p. 12
    
      B85--p. 26, 46
    
    Striped Hill sequence
    
      B99A--p. 59, 60
    
    Sultan Fm
    
      B73--p. 35, 40, 42
    
    Sultan Ls SE D3, D2 B896
    
      B62--p. 20, 24-27, 66-68, 70, 77, 79, 111, 156, 157
    
      B72--p. 11, 12
    
      B72A--p. 12
    
      B81--p. 30
    
      R18--p. 8
    
      R20--p. 10
    
      R26--p. 15, 17
    
      SP4--p. 84
    
    Summit Lake Tuff NW T4 B1520
    
    Summit Springs Evaporite Mbr (Pequop Mbr) EC P1 B1200
    
      B72A--p. 12
    
    *Summit Tuff
    
      R10--p. 73
    
    Sunflower Fm NE P, Pa B1350
    
      B67--p. 3, 5-8, 14, 19, 20, 26, 28-31
    
      B68--p. 6-12, 14, 17
    
      B72--p. 19
    
      B72A--p. 12
    
      B101--p. 37, 38, 44, 87
    
      SP4--p. 48, 49, 54
    
    Sunrise Fm C J1 B896
    
      B58--p. 25
    
      B61--p. 120
    
      B65--p. 28, 29
    
      B72A--p. 12
    
      B74--p. 6, 7, 11
    
      B99A--p. 95-98, 157
    
      B99B--p. 101, 129, 130, 218
    
      SP4--p. 63, 66, 67, 69, 78
    
    Supai Fm AZ P1, Pa B896
    
      B55--p. 5, 7, 8
    
      B62--p. 69, 162, 164
    
      B72--p. 12
    
      B72A--p. 12
    
      B73--p. 60-62
    
      B81--p. 24
    
    *Survey Butte Mbr (Oak Spring Fm) T5, T4
    
      B72--p. 18
    
      B72A--p. 12
    
    Susan Duster Ls Mbr (Pioche Shale) EC Cm2 B1350
    
    Sutro Mbr (Alta Fm) WC T4 B1200
    
      B70--p. 28
    
    Sutro Tuff T4
    
    Swales Mountain pluton
    
      B101--p. 76, 77
    
    Swan Peak Quartzite UT O2 B896
    
      B72--p. 7, 8
    
      B72A--p. 12
    
      B85--p. 8, 9
    
      B99A--p. 50
    
      B101--p. 18, 20
    
      SP4--p. 25, 28
    
    Swarbrick Fm C Cm3 B896
    
      B72A--p. 12
    
      B99A--p. 33, 38-40
    
      B99B--p. 212
    
      SP4--p. 21
    
    Swarbrick Ls
    
      B72--p. 15
    
      B72A--p. 12
    
    Swasey Ls UT Cm2 B1200
    
      B47--p. 39, 40
    
      B72--p. 17
    
      B72A--p. 12
    
    Swett Ignimbrite
    
      B72--p. 15
    
      B72A--p. 12
    
    Swett Ignimbrite Mbr (Condor Canyon Fm) T3
    
      R11--p. 6, 8, 10, 24, 25, 45, 53
    
    Swett Tuff Mbr (Condor Canyon Fm) UT T3 B1200
    
      R11--p. 44
    
    Sylvania Adamellite C J B1350
    
    Sylvania pluton
    
      B78--p. 28, 31, 50, 58, 63, 69, 71
    
    Table Butte Tuff Mbr (Leach Canyon Fm) UT T3 B1350, 1435-A
    
    Table Mountain Andesite T4
    
    Table Mountain Latite (Stanislaus Gp) CA T4 B1350
    
    Table Mountain, tuffs of
    
      B81--p. 23
    
    Tahoe Drift CA Q1 B896
    
    Tahoe Till Q1
    
      B94--p. 12
    
    Tallman Fanglomerate NC Tr1 B1200
    
      B59--p. 36
    
      B72--p. 25
    
      B72A--p. 12
    
      SP4--p. 63, 65
    
      Map 50
    
    Tank Hill Ls EC O1 B896
    
      B72--p. 17
    
      B72A--p. 12
    
      B73--p. 26
    
    Tank Hill Ls (Pogonip Gp) O1
    
    Tapeats Ss AZ Cm2, Cm1 B896
    
      B62--p. 14, 15
    
      B63--p. 37, 38
    
      B72A--p. 12
    
      SP4--p. 14, 19
    
    Taylor Canyon Fm NE S2 B1350
    
      B101--p. 24
    
    Tecopa Shale CA Cm2, Cm1 B1200
    
      B47--p. 27, 28
    
    Telegraph Canyon Fm (Nevada Gp) NC D2 B1200
    
    Telegraph Canyon Mbr (Nevada Fm) D2
    
      B72A--p. 12
    
    Tennessee Mountain Fm NE O, Cm B1350
    
      B61--p. 52
    
      B67--p. 3, 5, 8-9, 16, 20, 26, 29, 30, 33
    
      B68--p. 7, 8, 17
    
      B72--p. 19
    
      B72A--p. 12
    
      B81--p. 43
    
      B101--p. 17, 38, 80, 83, 87
    
      SP4--p. 21, 23, 27
    
    Teutonia Quartz Monzonite CA K2 B1200
    
    Thaynes Fm UT Tr1 B896
    
      B54--p. 12
    
      B72--p. 12
    
      B72A--p. 13
    
      B101--p. 32, 41, 48, 49
    
      R32--p. 30
    
      SP4--p. 60, 62, 67
    
    Theodore Quartz Diorite NW J B1520
    
    Thimble Ls Mbr (Carrara Fm) CA Cm1 B1564
    
    Third Canyon Fm C T B1520
    
      B99A--p. 131
    
    Thirsty Canyon Tuff SC T4 B1350
    
      B72--p. 18, 23
    
      B72A--p. 13
    
      B77--p. 21, 25, 27,33
    
      B78--p. 36, 41, 62
    
      R10--p. 68, 69
    
      R19--p. 14, 21-26, 29, 30, 32, 33, 51, 52,55, 56, 59
    
      SP4--p. 105
    
    Thisbe Fm NW T4 B1350
    
    Thousand Creek Fm NW T5 B896
    
    Thousand Spring sequence
    
      B101--p. 11, 89
    
    Thumb Fm EC T4 B896
    
      B62--p. 42, 47, 57, 83, 99, 100, 154
    
      B80--p. 5
    
      SP4--p. 53, 73, 93
    
      Map 67
    
    Thunder Mountain, trachyandesite of
    
      B92--p. 38, 40, 43, 80, 91
    
      R33--p. 122
    
    Timber Mountain Tuff (Piapi Canyon Gp) EC T5, T4 B1350, B1435-A
    
       B77--p. 16, 20, 21, 24, 27, 32-34
    
      B78--p. 41, 51
    
      R10--p. 69
    
      R19--p. 22
    
      R20--p. 12
    
      SP4--p. 104
    
    *Timothy Fm ID Tr1 B896 (in NV?)
    
      B101--p. 49, 50
    
    Timpoweap Mbr (Moenkopi Fm) UT Tr1 B1200
    
      B72A--p. 13
    
    Tioga Drift CA Q1 B896
    
    Tioga Till
    
      B945--p. 12
    
    Tippipah Ls SC P1, Pa3, Pa2, Pa1 B1200
    
      B72A--p. 13
    
      B73--p. 56, 59
    
      B77--p. 13, 14
    
    Tiser Ls NE O2 B1520
    
      B101--p. 11
    
    Titus Canyon Fm CA T3 B896
    
      B62--p. 47
    
      B72A--p. 13
    
      B73--p. 67
    
      SP4--p. 89, 105
    
    *Tiva Canyon Mbr (Oak Spring Fm)
    
      B72--p. 18
    
      B72A--p. 13
    
    Tiva Canyon Mbr (Paintbrush Tuff) SC T4 B1350
    
    Tiva Canyon Mbr (Piapi Canyon Fm) T4
    
    Toano Springs pluton
    
      B101--p. 75
    
    Tobin Fm NC Tr1 B1200
    
      B72--p. 25
    
      B72A--p. 13
    
      B83--p. 6
    
      B88--p. 28
    
      B89--p. 3, 9, 14, 17, 18
    
      SP4--p. 63
    
      Map 50
    
    Toiyabe Quartz Latite C T4 B1200
    
      B72--p. 26
    
      B72A--p. 13
    
      B88--p. 43, 47, 52, 57
    
      B99A--p. 104, 105, 122, 128-135, 138, 140, 157
    
      B99B--p. 44, 66, 69, 73, 76, 93, 112, 124, 183, 202,                                          
    
    224   Map 38
    
    Tolicha Peak, tuff of T4
    
      B77--p. 25, 33, 41
    
      R19--p. 22
    
    Tollhouse Flat Mbr (Eureka Valley Tuff) CA T4 B1520
    
    Tomera Fm NE Pa2 B1200
    
      B64--p. 38, 39
    
      B73--p. 56
    
      B99A--p. 87
    
      B101--p. 32, 34-36, 38
    
      R40--p. 23, 24
    
      SP4--p. 46, 48
    
    Tomera Fm (Ely Gp) Pa2
    
      B72--p. 21
    
      B72A--p. 13
    
      Map 50
    
    Tomera Mbr (Ely Ls) Pa2
    
    Tonka Fm NE Pa1, M2 B1200
    
      B72--p. 18, 21
    
      B72A--p. 13
    
      B88--p. 54
    
      B101--p. 38
    
      R32--p. 17, 18
    
      R41--p. 49
    
    Tonopah Fm C T4 B896
    
      B50--p. 172
    
      B72--p. 26
    
      B92--p. 32, 36-39, 43, 46, 48, 60, 81, 89, 110, 111,                                           121
    
    
    
     B96--p. 27
    
      B99A--p. 103, 105, 129, 130, 132, 135, 138, 158
    
      B99B--p. 183, 190
    
      R19--p. 43, 46
    
      R33--p. 121, 123
    
    Tonopah Rhyolite-Dacite
    
      B72--p. 26
    
      B72A--p. 13
    
      B99A--p. 135, 136
    
    Tonopah Summit Mbr (Fraction Tuff) C T4 B1564
    
      B92--p. 43, 45, 46, 50, 54, 55, 57, 76, 81,
    
          83, 85, 91, 121, 127
    
      R33--p. 121-123
    
    Tonto Gp AZ Cm2, Cm1 B896
    
    Tony Grove Lake Mbr (Laketown Dolostone) UT S1 B1564
    
    Topopah Spring Mbr (Oak Spring Fm)
    
      B72--p. 18
    
      B72A--p. 13
    
    Topopah Spring Mbr (Paintbrush Tuff) SC T4 B1350
    
    Topopah Spring Mbr (Piapi Canyon Fm)
    
    Toquima Fm C O3, O2, O1 B896
    
      B99A--p. 39, 42, 43, 45
    
      B99B--p. 58
    
      SP4--p. 25, 39, 49, 73
    
    Toquima pluton
    
      B99A--p. 99, 101, 102
    
      B99B--p. 121
    
    Tor Ls C D1 B1200
    
      B72--p. 23
    
      B72A--p. 13
    
      B88--p. 19
    
      B99A--p. 64, 68, 79, 80
    
    Toroweap Fm (Aubrey Gp) AZ P1 B1200
    
      B62--p. 35, 60, 79-81, 87, 152
    
      B63--p. 49
    
      B72--p. 11, 12
    
      B72A--p. 13
    
      B73--p. 59, 60, 62, 63
    
      R18--p. 7, 8
    
      R20--p. 10
    
      R26--p. 15
    
      SP4--p. 51, 53, 79
    
      Map 67
    
    Trail Ridge Mbr (Thirsty Canyon Tuff) SC T4 B1350
    
      B72--p. 18
    
      B72A--p. 13
    
      R19--p. 21-26, 29, 30, 32, 33
    
    Transvaal, tuff of
    
      B77--p. 24
    
    Trenton Canyon Mbr (Havallah Fm) NC P1 B1350
    
      B72A--p. 13
    
    Trenton Canyon pluton
    
      B88--p. 34
    
    Tripon Pass Ls NE M1 B1520
    
      B101--p. 29, 89
    
    Trout Creek shist Pr GNC
    
    Truckee Basin flows Q1 GNC
    
    Truckee Fm WC T5, T4 B1200
    
      B65--p. 31, 191
    
      B70--p. 29, 37-39
    
      B72--p. 27
    
      B72A--p. 13
    
      B75--p. 12, 13
    
      B83--p. 25, 28, 41, 51
    
      B88--p. 48
    
      B89--p. 31
    
      B97--p. 7, 15, 16, 21, 24, 26, 31, 33, 37, 40, 59-63, 65, 66 
    
      R22--p. 1   R29--p. 6
    
      R40--p. 3
    
      R41--p. 32, 81
    
      SP4--p. 89
    
    Tub Spring Mbr (Belted Range Tuff) SC T4 B1350
    
    *Tub Spring Mbr (Oak Spring Fm)
    
      B72--p. 18
    
      B72A--p. 13
    
    Tungstonia Granite EC T1 B1520
    
    Turupah Fm (Lahontan Valley Gp) WC Q2 B1350
    
      R9--p. 11, 16, 19
    
    Twin Bridges ls T4, T3, T2 GNC
    
    Twin Canyon Mbr (Osgood Mountain Quartzite) NC Cm1 B1350
    
      B72--p. 24
    
      B72A--p. 13
    
    Tybo Shale C Cm3 B896
    
      B72A--p. 13
    
      B99A--p. 33, 40
    
      SP4--p. 21
    
    Underdown Tuff C T3 B1520
    
      B99A--p. 137
    
      B99B--p. 112
    
      Map 38
    
    Union Mountain Fm (Nevada Gp) NE D2 B1200
    
    Union Mountain Mbr (Nevada Fm) D2
    
      B72A--p. 13
    
    Valder Fm NE O1 B1350
    
      B72A--p. 13
    
      B101--p. 11
    
      SP4--p. 28
    
    Valentine Dolomite Mbr (Sultan Ls) SE D3 B896
    
      B72A--p. 13
    
      B81--p. 31
    
    Valmy Fm NC O3, O2, O1 B1200
    
      B59--p. 16, 85, 98, 113, 128
    
      B61--p. 96
    
      B64--p. xi, 20, 31-33, 54, 65, 68, 114
    
      B72--p. 22, 26
    
      B72A--p. 13
    
      B81--p. 64
    
      B88--p. 14, 19-21, 23, 24, 26, 58, 66, 75, 78, 80,86, 95, 96   B89--p. 3, 6, 40, 101, 104
    
      B91--p. 33, 59
    
      B92--p. 14-16, 29, 81, 102-104, 129
    
      B94--p. 21, 22
    
      B96--p. 27, 33
    
      B98--p. 15
    
      B99A--p. 45
    
      B101--p. 10-12, 28, 30, 31, 33, 45, 55, 80, 83-91, 98,                                        
    
    103   R19--p. 3, 43
    
      R32--p. 18, 19, 46
    
      R33--p. 89, 120
    
      R40--p. 14, 16, 18, 19, 43
    
      R41--p. 60, 61, 65, 67, 93, 101, 108, 111, 112
    
      SP4--p. 27, 28
    
    Valmy Gp O3, O2, O1
    
      R40--p. 59
    
    Valmy quartzite
    
      B91--p. 59
    
    Van Duzer Ls NC Pa2 B1350
    
      B60--p. 12, 19-21
    
      B72--p. 20
    
      B72A--p. 13
    
      B101--p. 32, 36, 44, 45, 84, 95
    
    Veta Grande Fm WC J2 B1350
    
      B75--p. 6
    
      SP4--p. 66, 71
    
    Victor Andesite C T B896
    
    Vindicator Rhyolite C T3 B896
    
      R19--p. 17, 18, 53, 56, 57, 59
    
      R33--p. 77, 78
    
    Vinini Fm NC O3, O2, O1 B1200
    
      B54--p. 8
    
      B57--p. 37
    
      B64--p. 20, 31-33, 38, 40, 49, 54-56, 59,
    
         91, 93, 95, 98, 103, 113
    
      B72--p. 21-23, 26
    
      B72A--p. 13
    
      B81--p. 55, 56
    
      B85--p. 13
    
      B88--p. 20, 59, 78, 96
    
      B90--p. 5, 6, 8-12, 14, 18-21
    
      B91--p. 32
    
      B92--p. 14, 16
    
      B98--p. 15
    
      B99A--p. 45, 47, 56, 58, 125, 154
    
      B101--p. 10-12
    
      R19--p. 4, 39
    
      R32--p. 18, 24, 40-42
    
      R33--p. 102
    
      R40--p. 19, 28, 40, 41, 66, 71
    
      R41--p. 49, 51, 56, 58, 61
    
      SP4--p. 27, 28, 39
    
    Vinini shale
    
      B57--p. 37
    
      B72A--p. 13
    
    Virgin Ls Mbr (Moenkopi Fm) UT Tr1 B896
    
      B72A--p. 13
    
      SP4--p. 60, 64
    
    Virgin Valley beds T4 GNC
    
    Virgin Valley Fm NW T4 B896
    
      B70--p. 13, 15, 30
    
      B81--p. 56
    
    Wahmonie Fm C T4 B1200
    
      B77--p. 23, 32, 41
    
      R10--p. 69
    
    Wah Wah Ls (Pogonip Gp) UT O1 B1200
    
      B72--p. 8, 14
    
      B72A--p. 13
    
      B101--p. 18
    
      R32--p. 30
    
    Wah Wah Springs Tuff Mbr (Needles Range Fm) UT T3 B1200
    
      R11--p. 17
    
    Washington Hill Rhyolite WC T5 B1200
    
      B70--p. 38, 39
    
      B72--p. 27
    
      B72A--p. 13
    
    Wassuk Gp WC T4 B1200
    
      Map 60
    
    Waterpipe Canyon Fm NE Pz3, D B1350
    
      B101--p. 32, 86
    
    Weary Flat quartz monzonite
    
      R33--p. 128, 130, 131, 134, 135, 137, 138
    
    Weaver Basin breccia O GNC
    
    Weaver Rhyolite (Koipato Gp) NW Tr1 B896
    
      B61--p. 155, 201
    
      B72--p. 26
    
      B72A--p. 13
    
      B84--p. 9, 57
    
      B89--p. 11, 13, 22, 49, 85
    
      SP4--p. 65
    
    Webb Fm NE M1 B1520
    
      B101--p. 12, 13, 29, 81
    
      R40--p. 24, 69, 71, 73
    
      SP4--p. 36
    
    Weed Heights Mbr (Mickey Pass Tuff) WC T3 B1564
    
      R27--p. 6, 10-12, 16-18, 27
    
      Maps 63, 64, 77
    
    Weepah mbr (Esmeralda Fm) T5 GNC
    
    Weepah pluton
    
      B78--p. 28, 31, 52, 69, 70
    
    Wenban Ls NC D3, D2, D1 B1350
    
      B64--p. 27, 28, 33
    
      B88--p. 18, 78, 79
    
      R40--p. 28
    
      SP4--p. 32
    
      Map 50
    
    West End Rhyolite C T B896
    
      B50--p. 172
    
      B92--p. 46, 49, 91, 111
    
      R19--p. 43, 46
    
      R33--p. 123, 124
    
    Westgate fm J2 GNC
    
    West Humboldt pluton
    
      B89--p. 30
    
    West Range Fm
    
      B85--p. 27
    
    West Range Ls EC D3 B896
    
      B72--p. 16
    
      B72A--p. 14
    
      B73--p. 36, 40, 43, 44
    
      B99A--p. 81, 82
    
    *Wheeler limestone mbr (Pioche Shale) Cm1 GNC
    
      B85--p. 58, 62
    
    Wheeler Peak pluton
    
      R10--p. 55
    
    Whipple Cave Fm EC Cm3 B1350, B1502-A
    
      B72A--p. 14
    
      B73--p. 21
    
      B85--p. 8
    
      B99A--p. 41
    
    Whirlwind Fm UT Cm2 B1200
    
      B72A--p. 14
    
    Whistler Mountain Alaskite EC T?? B1200
    
    Whistler Mountain stock
    
      R10--p. 38
    
    White Blotch Spring, tuff of
    
      B77--p. 20, 32, 37, 40
    
      B92--p. 41, 43, 50, 89
    
      B99A--p. 122
    
    White Caps Ls Mbr (Gold Hill Fm) C Cm B896
    
      B99B--p. 144, 147
    
    White Horse pluton
    
      B101--p. 75
    
    Whitehorse stock
    
      R10--p. 34
    
    *White Pine Fm
    
      B57--p. 9, 33-36, 40, 58, 61, 77, 113
    
    *White Pine Gp
    
      B72--p. 14-17
    
      B72A--p. 14
    
      B85--p. 11, 13
    
    *White Pine Shale M2
    
      B57--p. 28, 31, 33, 36, 37
    
      B72--p. 16, 18, 21
    
      B72A--p. 14
    
    White Rock stock
    
      B60--p. 15, 17, 40-42, 50
    
      B101--p. 74
    
    *White Sage Fm UT T2 B896 (in NV?)
    
      B99A--p. 107
    
    Wichman Fm EC T5 B1200
    
    Wildcat Peak Fm C Pa B1200, B1435-A
    
      B72A--p. 14
    
      B88--p. 25
    
      B99A--p. 83, 91, 155
    
      B99B--p. 158
    
      SP4--p. 48, 49
    
    Wildcat Peak, ignimbrite of
    
      B101--p. 103
    
    Wildhorse Spring, rhyolite of
    
      R19--p. 51, 54, 59
    
    Wilhoites fm
    
      B99A--p. 40
    
    Willard Creek Quartzite (McCoy Creek Gp) EC Z B1350
    
      B72A--p. 14
    
    Williams Ridge and Morey Peak, tuff of
    
      B99A--p. 112, 113, 116-120, 123
    
      B99B--p. 89, 169, 171
    
    Willow Canyon Fm C O B1350
    
      B99A--p. 47, 58, 81
    
      B99B--p. 158
    
    Willow Tank Fm SE K1 B1200, B1435-A
    
      B55--p. 9, 10
    
      B62--p. 41, 42, 87
    
      B65--p. 30
    
      B76--p. 18
    
      B81--p. 22
    
      SP4--p. 71, 73, 74
    
    Windfall Fm EC Cm3 B1200
    
      B64--p. 7, 16-18, 82
    
      B72--p. 15, 22
    
      B72A--p. 14
    
      B77--p. 8, 9, 39, 40
    
      B85--p. 8
    
      B88--p. 10
    
      B99A--p. 33, 38-41, 46, 47, 49
    
      B101--p. 15, 16
    
      R32--p. 52
    
      R41--p. 51
    
      SP4--p. 23
    
      Maps 35, 50
    
    Windmill Ls NC D1 B1350, B1457-A
    
      B88--p. 18
    
      B99A--p. 67
    
      B101--p. 24
    
      SP4--p. 32
    
    Windous Butte Fm EC T3 B1200
    
      B72--p. 16
    
      B72A--p. 14
    
      B73--p. 67
    
      B85--p. 19, 20
    
      B88--p. 42, 43
    
      B99A--p. 105, 106, 108, 109, 111-113, 117, 118, 123
    
      R11--p. 6, 8, 9, 11, 13-16, 32, 33, 41
    
      R19--p. 37
    
    Winnemucca Fm (Auld Lang Syne Gp) NC Tr3 B1200
    
      B59--p. 44, 90, 123, 129
    
      B72--p. 24
    
      B72A--p. 14
    
      B89--p. 4, 19-21
    
      SP4--p. 66
    
    Winnemucca sequence
    
      B99A--p. 141
    
    Wono tephra bed Q1 
    
      R41--p. 79, 81
    
      Map 76
    
    Wood Canyon Fm SE Cm1, Z B896
    
      B47--p. 25, 26
    
      B62--p. 14, 15, 18, 73, 76
    
      B72--p. 19
    
      B72A--p. 14
    
      B73--p. 12, 14
    
      B77--p. 5, 6, 14, 17, 31, 38
    
      B92--p. 12, 13
    
      B99A--p. 33, 35, 36
    
      B99B--p. 46-50, 144
    
      R20--p. 10
    
      SP4--p. 14, 19
    
    Woodpecker Ls Mbr (Nevada Fm) EC D2 B1200
    
      B64--p. 24-26
    
      B72--p. 21, 22
    
      B72A--p. 14
    
      B73--p. 35
    
      B99A--p. 62, 71, 73, 74, 76, 78, 79
    
      B101--p. 26
    
    Woodruff Fm NE D3, D2, D1 B1520
    
      B99A--p. 79
    
      B101--p. 12, 13
    
      R32--p. 18
    
      SP4--p. 34, 35
    
    Wyemaha Fm (Lahontan Valley Gp) WC Q1 B1350
    
      B89--p. 39
    
      B94--p. 12
    
      R9--p. 11, 13-15
    
      Map 76
    
    Wyman Fm CA Z B896
    
      B72A--p. 14
    
      B77--p. 4, 5
    
      B78--p. 5-7, 28, 42, 44-46, 50, 52,
    
          53, 57, 58, 60, 62, 64, 69-72
    
      B81--p. 52, 53
    
      B84--p. 24, 30, 31, 35-37, 46-49
    
      B92--p. 10, 12, 26, 44, 103, 133
    
      R19--p. 21
    
      SP4--p. 16, 18
    
    Yellow Hill Ls EC O1 B896
    
      B72A--p. 14
    
      B73--p. 26
    
    Yellow Hill Ls (Pogonip Gp) O1
    
    Yellowpine Ls (Monte Cristo Gp) SE M2 B896
    
      B72A--p. 14
    
      B81--p. 33
    
    Yellowpine Mbr (Monte Cristo Ls) M2
    
      B81--p. 28, 34
    
    Yerington batholith Map 77
    
    Yerington ignimbrite T4, T3 GNC
    
    Young America Gravel NE T4 B1350
    
      B67--p. 21, 23-24, 31
    
      B101--p. 63
    
    Yucca Mountain Mbr (Paintbrush Tuff) SC T4 B1350
    
    Yucca Mountain Mbr (Piapi Canyon Fm) T4
    
    Zabriskie Fm CA Cm1 B1200
    
      B73--p. 14
    
    Zabriskie Quartzite Cm1
    
      B47--p. 26, 27
    
      B72--p. 19
    
      B72A--p. 14
    
      B77--p. 6, 17
    
      B78--p. 16
    
      B92--p. 13
    
      B99A--p. 33, 35-37, 124
    
      B99B--p. 46-50, 86, 89, 144
    
      R20--p. 10
    
      SP4--p. 14, 19
    
    Zabriskie Quartzite Mbr (Wood Canyon Fm) Cm1
    
    Zanzibar Ls C O1 B896
    
      B99A--p. 39, 42-46
    
      B99B--p. 47, 48, 58, 117, 144, 178
    
      SP4--p. 25, 39
    
    
    U.S. GEOLOGICAL SURVEY PUBLICATIONS CITED B896 Wilmarth, M. G. (1938) Lexicon of geological names of the United States: USGS Bull. 896 B1056-A Wilson, D., Sando, W. J., Kopf, R. W., and others (1957) Geologic names of the United States introduced in 1936-1955: USGS Bull. 1056-A B1200 Keroher, G. C., and others (1966) Lexicon of geologic names of the United States for 1936-1960: USGS Bull. 1200 B1350 Keroher, G. C. (1970) Lexicon of geologic names of the United States for 1961-1967: USGS Bull. 1350, 848 p. B1422-A Cohee, G. V., and Wright, W. B. (1976) Changes in stratigraphic nomenclature by the U. S. Geological Survey, 1975: USGS Bull. 1422-A, 84 p. B1435-A Sohl, N. F., and Wright, W. B. (1977) Changes in stratigraphic nomenclature by the U. S. Geological Survey, 1976: USGS Bull. 1435-A, 151 p. B1457-A _____ (1978) Changes in stratigraphic nomenclature by the U. S. Geological Survey, 1977: USGS Bull. 1457-A, 136 p. B1482-A _____ (1979) Changes in stratigraphic nomenclature by the U. S. Geological Survey, 1978: USGS Bull. 1482-A, 91 p. B1520 Luttrell, G. W., and others (1981) Lexicon of geologic names of the United States for 1968-1975: USGS Bull. 1520, 342 p. B1502-A Sohl, N. F., and Wright, W. B. (1980) Changes in stratigraphic nomenclature by the U. S. Geological Survey, 1979: USGS Bull. 1502-A, 138 p. B1535 Swanson, R. W., Hubert, M. L., Luttrell, G. W., and Jussen, V. M. (1981) Geologic names of the United States through 1975: USGS Bull. 1535, 643p. B1564 Luttrell, G. W., Hubert, M. L., and Jussen, V. M. (1986) Lexicon of new geologic names of the United States, 1976-1980: USGS Bull. 1564, 191 p. B1605-A USGS (1985) Stratigraphic Notes, 1984: USGS Bull. 1605-A, 78 p. GNC Geological Names Committee (ca. 1974) Nevada geological names: USGS computer printout, 1,070 lines. Nevada Bureau of Mines and Geology Publications Cited
    NEVADA BUREAU OF MINES AND GEOLOGY PUBLICATIONS CITED B47 Wheeler, H. E. (1948) Late Cambrian-Cambrian stratigraphic cross section through southern Nevada: NBMG Bull. 47, 61 p. B48 Searles, Fred (1948) A contribution to the published information on the geology and ore deposits of Goldfield, Nevada: NBMG Bull. 48, 24 p. B49 Stoddard, Carl, and Carpenter, J. A. (1950) Mineral resources of Storey and Lyon Counties, Nevada: NBMG Bull. 49, 115 p. B50 Kral, V. E. (1951) Mineral resources of Nye County, Nevada: NBMG Bull. 50, 223 p. B54 Granger, A. E., Bell, M. M., Simmons, G. C., and Lee, F. (1957) Geology and mineral resources of Elko County, Nevada: NBMG Bull. 54, 190 p. B55 Murphy, T. D. (1954) Silica resources of Clark County, Nevada: NBMG Bull. 55, 33 p. B56 Page, B. M. (1959) Geology of the Candelaria mining district, Mineral County, Nevada: NBMG Bull. 56, 67 p. B57 Humphrey, F. L. (1960) Geology of the White Pine mining district, White Pine County, Nevada: NBMG Bull. 57, 119 p. B58 Ross, D. C. (1961) Geology and mineral deposits of Mineral County, Nevada: NBMG Bull. 58, 98 p. B59 Willden, Ronald (1964) Geology and mineral deposits of Humboldt County, Nevada: NBMG Bull. 59, 154 p. B60 Decker, R. W. (1962) Geology of the Bull Run quadrangle, Elko County, Nevada: NBMG Bull. 60, 65 p. B61 Lawrence, E. F. (1963) Antimony deposits of Nevada: NBMG Bull. 61, 248 p. B62 Longwell, C. R., Pampeyan, E. H., Bowyer, Ben, and Roberts, R. J. (1965) Geology and mineral deposits of Clark County, Nevada: NBMG Bull. 62, 218 p. B63 Beal, L. H. (1965) Geology and mineral deposits of the Bunkerville mining district: NBMG Bull. 63, 96 p. B64 Roberts, R. J., Montgomery, K. M., and Lehner, R. E. (1967) Geology and mineral resources of Eureka County, Nevada: NBMG Bull. 64, 152 p. B65 USGS and NBMG (1964) Mineral and water resources of Nevada: NBMG Bull. 65, 314 p. B67 Bushnell, Kent (1967) Geology of the Rowland quadrangle, Elko County, Nevada: NBMG Bull. 67, 38 p. B68 Coash, J. R., and Hoare, R. D. (1967) Geology of the Mount Velma quadrangle, Elko County, Nevada: NBMG Bull. 68, 21 p. B70 Bonham, H. F., and Papke, K. G. (1969) Geology and mineral deposits of Washoe and Storey Counties, Nevada: NBMG Bull. 70, 140 p. B71 Rose, R. L. (1969) Geology of parts of the Wadsworth and Churchill Butte quadrangles, Nevada: NBMG Bull. 71, 27 p. B72 Langenheim, R. L., and Larson, E. R. (1973) Correlation of Great Basin stratigraphic units: NBMG Bull. 72, 36 p. B72A Allen, J. E. (n. d.) Index to Bulletin 72--Correlation of Great Basin stratigraphic units: NBMG Bull. 72A, 19 p. B73 Tschanz, C. M., and Pampeyan, E. H. (1970) Geology and mineral deposits of Lincoln County, Nevada: NBMG Bull. 73, 188 p. B74 Archbold, N. L., and Paul, R. R. (1970) Geology and mineral deposits of the Pamlico mining district, Mineral County, Nevada: NBMG Bull. 74, 12 p. B75 Moore, J. G. (1969) Geology and mineral deposits of Lyon, Douglas, and Ormsby Counties, Nevada: NGMB Bull. 75, 45 p. B76 Papke, K. G. (1970) Montmorillonite, bentonite, and fuller's earth deposits in Nevada: NBMG Bull. 76, 47 p. B77 Cornwall, H. R. (1972) Geology and mineral deposits in southern Nye County, Nevada: NBMG Bull 77, 49 p. B78 Albers, J. P., and Stewart, J. H. (1972) Geology and mineral deposits of Esmeralda County, Nevada: NBMG Bull. 78, 80 p. B79 Papke, K. G. (1972) Erionite and other associated zeolites in Nevada: NBMG Bull. 79, 32 p. B80 Volborth, Alexis (1973) Geology of the granite complex of the Eldorado, Newberry, and northern Dead Mountains, Clark County, Nevada: NBMG Bull. 80, 40 p. B81 Garside, L .J. (1973) Radioactive mineral occurrences in Nevada: NBMG Bull. 81, 121 p. B83 Willden, Ronald, and Speed, R. C. (1974) Geology and mineral deposits in Churchill County, Nevada: NBMG Bull. 83, 95 p. B84 Papke, K. G. (1975) Talcose minerals in Nevada--talc, chlorite, and pyrophyllite: NBMG Bull. 84, 63 p. B85 Hose, R. K., Blake, M. C., and Smith, R. M. (1976) Geology and mineral resources of White Pine County, Nevada: NBMG Bull. 85, 105 p. B87 Papke, K. G. (1976) Evaporites and brines in Nevada playas: NBMG Bull. 87, 35 p. B88 Stewart, J. H., McKee, E. H., and Stager, H. K. (1977) Geology and mineral deposits in Lander County, Nevada: NBMG Bull. 88, 106 p. B89 Johnson, M. C. (1977) Geology and mineral deposits of Pershing County, Nevada: NBMG Bull. 89, 115 p. B90 Chamberlain, C. K. (1977) Ordovician and Devonian trace fossils from Nevada: NBMG Bull. 90, 24 p. B91 Garside, L. J., and Schilling, J. H. (1979) Thermal waters of Nevada: NBMG Bull. 91, 163 p. B92 Bonham, H. F., and Garside, L. J. (1979) Geology of the Tonopah, Lone Mountain, Klondike, and northern Mud Lake quadrangles, Nevada: NBMG Bull. 92, 142 p. B93 Papke, K. G. (1979) Fluorspar in Nevada: NBMG Bull. 93, 77 p. B94 Mifflin, M . D., and Wheat, M. M. (1979) Pluvial lakes and estimated pluvial climates of Nevada: NBMG Bull. 94, 57 p. B95 Bell, J. W. (1981) Subsidence in Las Vegas Valley: NBMG Bull. 95, 84 p. B96 Bonham, H. F., and Garside, L. J. (1982) Geochemical reconnaissance of the Tonopah, Lone Mountain, and northern Mud Lake quadrangles, Nevada: NBMG Bull. 96, 68 p. B97 Benoit, W. R., Hiner, H. E., and Forest, R. T. (1982) Discovery and geology of the Desert Peak geothermal field--a case history: NBMG Bull. 97, 81 p. B98 Papke, K. G. (1984) Barite in Nevada: NBMG Bull. 98, 125 p. B99A Kleinhampl, F. J., and Ziony, J. F. (1985) Geology of northern Nye County, Nevada: NBMG Bull. 99A, 172 p. B99B Kleinhampl, F. J., and Ziony, J. F. (1984) Mineral resources of northern Nye County, Nevada: NBMG Bull. 99B, 243 p. B100 Tingley, J. V., and Berger, B. R. (1985) Lode gold deposits of Round Mountain, Nevada: NBMG Bull. 100, 62 p. B101 Coats, R. R. (1987) Geology of Elko County, Nevada: NBMG Bull. 101, 112 p. R9 Morrison, R. B., and Frye, J. C. (1965) Correlation of the middle and late Quaternary successions of the Lake Lahontan, Lake Bonneville, Rocky Mountain (Wasatch Range), southern Great Plains, and eastern Midwest areas: NBMG Report 9, 45 p. R10 Schilling, J. H. (1965) Isotopic age determinations of Nevada rocks: NBMG Report 10, 79 p. R11 Cook, E. F. (1965) Stratigraphy of volcanic rocks in eastern Nevada: NBMG Report 11 R18 Schilling, J. H., and Garside, L. J. (1968) Oil and gas developments in Nevada, 1953-1967: NBMG Report 18, 43 p. R19 Bonham, H. F., and others (1974) Guidebook to the geology of four Tertiary volcanic centers in central Nevada: NBMG Report 19, 72 p. R20 Naff, R. L., Maxey, G. B., and Kaufman, R. F. (1974) Interbasin ground-water flow in southern Nevada: NBMG Report 20, 28 p. R22 Bingler, E. C. (1975) Guidebook to the Quaternary geology along the western flank of the Truckee Meadows, Washoe County, Nevada: NBMG Report 22, 14 p. R23 Erwin, J. W. (1975) Induced polarization and magnetic surveys of altered Tertiary volcanic rocks near Reno, Nevada: NBMG Report 23, 7 p. R26 Papke, K. G., Schilling, J. H., Barker,J. M., Wilson, J. L., and Walters, R. A. (1975) Guidebook--Las Vegas to Death Valley and return: NBMG Report 26, 39 p. R29 Garside, L. J., Weimer, B. S., and Lutsey, I. A. (1977) Oil and gas developments in Nevada: NBMG Report 29, 32 p. R32 Shawe, D. R., ed. (1978) Guidebook to mineral deposits of the central Great Basin: NBMG Report 32, 75 p. R33 Ridge, J. D., ed. (1979) Papers on mineral deposits of western North America: NBMG Report 33, 214 p. R35 Erwin, J. W. (1980) Seismic refraction studies, Tonopah area: NBMG Report 35, 9 p. R36 Kral, V. E., and others (1983) Papers given at the precious-metals symposium, Sparks, Nevada, November 17-19, 1980: NBMG Report 36, 172 p. R39 Tingley, J. V. (1984) Trace element associations in mineral deposits--Bare Mountain mining district, southern Nye County, Nevada: NBMG Report 39, 28 p. R40 Tingley, J. V.; and Bonham, H. F., eds. (1986) Sediment-hosted precious-metal deposits of northern Nevada: NBMG Report 40, 103 p. R41 _____ (1986) Precious-metal mineralization in hot springs systems, Nevada-California: NBMG Report 41, 136 p. R42 Garside, L. J. (1986) Geochemical reconnaissance--Camp Douglas and Moho Mountain quadrangles, Mineral County, Nevada: NBMG Report 42, 21 p. SP4 Stewart, J. H. (1980) Geology of Nevada: NBMG Special Publication 4, 136 p.