Gravity map of the Tonopah, Baxter Spring, Lone Mountain, and San Antonio Ranch Quadrangles, Nevada, by John W. Erwin, 1968.

Gravity map at 5-milligal intervals, showing generalized geology in eight units; on topographic base with township and range grid; text describing field methods and data reduction, topography and general geology, rock densities and interpretation, and gravity anomalies of the area; references.

Supplemental information on gravity in this region is available in R38 and M73.

Map 36, 1:125,000, 23x29", two color, $4.00