this is a very rare and important early geologic interpretation of the geology around economic regions in Nevada made sept-nov 1964 by the French. Engraved by Erhard, Dugay-Trouin published in Paris by Lemercier. 21.5 x 28" The various regions of interest are shown with shaded relief and highlighted by hand painted colors. Two significant cross sections are shown from west to east and south to north. The mining areas include the Austin area, Unionville, the Comstock, Bodie and Aurora. We have not seen this map before (FH) This may be the first published geologic work of Nevada. Nevada