Los Angeles


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A compilation of K-Ar-ages for southern California

Conventional K-Ar ages for granitic, volcanic, and metamorphic rocks collected in this area.

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Isostatic gravity map with simplified geology of the Los Angeles 30x60 minute Quadrangle

Includes detailed point measurements of gravity

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Gravity data along LARSE (Los Angeles Regional Seismic Experiment) line 2, southern California

Data taken across the San Fernando Basin and Transverse Ranges to help characterize the structure underlying this area

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Preliminary potential-field constraints on the geometry of the San Fernando basin, southern California

Results of mathematical modeling of gravity and magnetic anomaly data to infer the geologic structure of the area

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Isostatic gravity map with geology of the Santa Ana 30'x60' quadrangle, southern California

Contour map of isostatic gravity anomaly with bedrock geology, and principal facts for the gravity stations as a separate data file.

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Titanium-vanadium deposits hosted in mafic-ultramafic layered intrusions and massif anorthosite intrusions from around the world

Information on titanium-vanadium deposits hosted in mafic-ultramafic layered intrusions and massif anorthosite intrusions from around the world. Includes only deposits with reported grade and tonnage information. Data are provided in CSV and shapefile formats.

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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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Density and magnetic properties of selected plutons (granitoids) in the Great Basin, parts of California, Nevada, Oregon, Utah, and Arizona

Physical property measurements rocks from this area, including station identifier, geographic coordinates, rock type, density, magnetic susceptibility, remanent magnetization, declination, and inclination where available. Data are provided in CSV format. Sample locations are provided in shapefile format.

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Tungsten Deposits in the United States (ver. 2.0, August 2020)

Detailed descriptions of mineral deposits containing this commodity, including history, production, resource estimates, and geographic features. Data are provided in CSV, shapefile, Microsoft Excel, and Esri file geodatabase formats.

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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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