From summary: Granitic and contact-metamorphic rocks of the Owens Valley area were sampled to determine their favorability for uranium. Uranium deposits associated with these rocks were examined to determine the mode of occurrence.

Supplementary data containing geologic, location, and radiometric maps of Owens Valley area, Inyo and Mono Counties, California, and Esmeralda and Mineral Counties, Nevada.

A complex pattern of active faults occurs in the southern Amargosa Desert, southern Nye, County, Nevada. These faults can be grouped into three main fault systems: (1) a NE-striking zone of faults that forms the southwest extension of the left-lateral Rock Valley fault zone, in the much larger Spotted Range-Mine Mountain structural zone, (2) a N-striking fault zone coinciding with a NNW-trending alignment of springs that is either a northward continuation of a fault along the west side of the Resting Spring Range or a N-striking branch fault of the Pahrump fault system, and (3) a NW-striking fault zone which is parallel to the Pahrump fault system, but is offset approximately 5 km with a left step in southern Ash Meadows. These three fault zones suggest extension is occurring in an E-W direction, which is compatible with the {approximately}N10W structural grain prevalent in the Death Valley extensional region to the west.

Report issued by the Bureau of Mines on the Coso mercury deposits of Inyo County, and development of the bucket drill for obtaining samples. Descriptions of the physical features of the deposits are listed. This report includes tables, maps, photographs, and illustrations.

"This report presents engineering details, statistics, individual borehole histories, and geophysical logs of the eight holes drilled in the Owens Lake, California drilling program." (from Introduction)

Abstract: Several uranium occurrences have been discovered in the Coso lake beds, Owens Valley, California, along the west flank of the Coso Range.

This report records the study of the geology and uranium deposits of Haiwee Ridge, Inyo County, California, on the west flank of the Coso Mountains.

From abstract: The Coso quicksilver district, which is in the Coso Range, Inyo County, Calif., produced 231 flasks of quicksilver between 1935 and 1939. The quicksilver mineral, cinnabar, was not recognized in the district until 1929, although the hot springs near the deposits have been known since about 1875...The granitic rock on which much of the sinter rests is considerably altered. The cinnabar was deposited as films and grains in open spaces in the sinter, during one stage in a sequence of hot spring activities that still continues. The amount of sinter in the district is estimated to be about 1,800,000 tons. Although the greater part of this does not contain much cinnabar, the total quantity of such material is large enough to be of interest as a low-grade ore.

The following slides contain petrographic photos from the Owens Valley drilling project.

Data logs for drillings in Owens Lake area, California.