1994a Fieldtrip Guidebook, Dating of Pre-Tertiary Attenuation Structures in Upper Paleozoic and Mesozoic Rocks and the Eocene History in Northeast Nevada and Northwest Utah. C.H. Thorman, C.J. Nutt, and C.J. Potter, Editors. Eleven papers, four fieldtrip guides, one roadlog, and five color figures. Topics include gravity and aeromagnetic maps of east-central Elko 1 x 2 degree quad, Eocene volcanics and lacustrine deposits, Triassic and Jurassic rocks, geology of the Goshute Indian Reservation, mass wasting in the Goshute-Toano Range, and Jurassic tectonic plates at Ferguson Mountain. 125 pp. (CD-ROM) NPS 08 , $25.00