Bouguer gravity map of Nevada, Wells sheet, by John W. Erwin, 1980.

Gravity map of the Wells 1- by 2-degree Quadrangle at 5-milligal intervals, showing gravity stations, and generalized geology in six units; on topographic base with township and range; text describes geologic units, sources of gravity data, and sources of generalized geology; accompanying 4-page text describes the field methods and data reduction, general geology, and gravity anomalies; references.

See OF82-1.

Map 65, 1:250,000, 22x36", two color, $4.00