1:250,000-scale geology of the Dry Valley Hydrographic Area, Nevada and California
This dataset consists of digital geologic data for the Dry Valley Hydrographic area, 
Nevada and California.  It was compiled from individual 1:250,000-scale geologic 
data for Washoe County, Nevada, 1:62,500-scale geologic data for the Chilcoot 
and Doyle 15' quadrangles in California and the results of field mapping …