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Rock Geochemistry and Mineralogy from Fault Zones and Polymetallic Fault Veins of the Central Front Range, Colorado
Data in this report will be used to better understand the processes that control epithermal mineral-deposit formation by attempting to relate the geochemistry of the primary structures that hosted hydrothermal fluid flow to their heat and fluid sources. |
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Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990
Magnetotelluric data collected in 1989 and 1990 using USGS portable truck mounted systems that measure the distribution of electrical conductivity beneath the surface of the earth. This release provides digital information previously collected, recovered and reformatted for use with modern software. Data are provided in MT/EMAP formats. |
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Aeromagnetic Data of Alturas, California, and Surrounding Areas
Aeromagnetic survey data giving the calculated magnetic anomaly. Data are provided in CSV format. |
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Preliminary geologic map of the Greater Antilles and the Virgin Islands
A compilation of information from the literature, integrated to provide a seamless geologic map of the region. Two map sheets are included, a more general sheet showing the entire area and a more detailed sheet showing Puerto Rico and the Virgin Islands. |
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