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Seven aeromagnetic surveys in California and Nevada

Grid and flight-line data files provided by the geophysical survey contractors.

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Major- and trace-element concentrations in soils from northern California: Results from the Geochemical Landscapes project pilot study

Regional-scale geochemical survey designed to serve as a baseline for further analyses, and to understand effects of historical mining in the area.

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Pb-concentrations and Pb-isotope ratios in soils collected along an east-west transect across the United States

Analytical results for Pb-concentrations and isotopic ratios from about 150 samples of soil A horizon and about 145 samples of soil C horizon collected along a 4000-km east-west transect across the USA.

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Reported historic asbestos mines, historic asbestos prospects, and other natural occurrences of asbestos in the conterminous United States

Site-by-site information on 876 natural occurrences of asbestos reported within the conterminous US. Includes location, mineralogy, geology, and relevant literature for each asbestos site. Data are provided in Microsoft Excel, shapefile, and CSV formats.

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Density and Magnetic Properties of Selected Rock Samples from the Western U.S. and Alaska

Physical properties (density, magnetic susceptibility, and remanent magnetism) from 20,000 rock samples. Data are provided in CSV format.

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Update of the Mineral Resources Data System for California including Mineral Deposit Types

Improved information on deposit model (type) in records of this older USGS database describing sites that are located in California. Includes a list of additional deposit types needed to properly categorize the California locations. Data are provided in Microsoft Excel, CSV, and Esri personal geodatabase (Microsoft Access) formats.

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