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GMEG - Geophysics Unit of Menlo Park, CA- (GUMP)


Geophysics Unit of Menlo Park, CA (GUMP)

U.S. Geological Survey - Western Region - Geology and Geophysics

David A. Ponce


Data on the Winnemucca 1 x 2 degree quadrangle, northern Nevada Isostatic gravity map of the Battle Mtn 30x60' quadrangle, northern Nevada
Gravity data
ASCII Data / Format / Map Preview
Includes station identification, location, elevation, observed gravity, and complete Bouguer and isostatic gravity anomalies.
Magnetic data
ASCII Data / Format / Map Preview
Various aeromagnetic surveys analytically continued to a constant terrain clearance of 305 m (1,000 ft) and merged using a grid spacing of 1 km.
Drill-hole data
ASCII Data / Format / Map Preview
Drill-hole data, color coded for lithologies penetrated.

Battle Mtn 30x60' Gravity Map


Geophysical studies of the Humboldt River Basin are part of an interagency effort by the U.S. Geological Survey and the Bureau of Land Management to assess the mineral, environmental, water, and cultural resources of the Humboldt River Basin ecosystem in north-central Nevada.

Other Geophysical Datasets

EROS Data Center

National Geophysical Data Center


Kirchoff-Stein, K.S., 1988, Aeromagnetic map of Nevada, Winnemucca sheet: Nevada Bureau of Mines and Geology Map 92, scale 1:250,000.

Moring, B.C., 1990, Map showing drill-hole depths, lithologic intercepts, and partial isopachs of basin fill in the Winnemucca 1 by 2 degrees quadrangle, Nevada: U.S. Geological Survey Miscellaneous Field Studies Map MF-1955, scale 1:250,000.

Sikora, R.F., 1991, Principal facts for 133 gravity stations, with color maps of Bouguer and isostatic residual gravity anomalies on the Winnemucca 1 x 2 degrees quadrangle, Nevada: U.S. Geological Survey Open-File Report 91-256-A, documentation, 40 p., 91-256-B diskette. (Digital data for entire quadrangle on diskette).

Ponce, D.A., 1997, Gravity data of Nevada : U.S. Geological Survey Digital Data Series DDS-42, 27 p., CD-ROM.

Ponce, D.A., and Moring, B.C., 1998, Drill-hole lithology map of the Winnemucca 1:250,000-scale quadrangle, Nevada: U.S. Geological Survey Open-File Report 98-250.

Ponce, D.A., 2004, Geophysical methods and application, in Wallace, A.R., Ludington, Steve, Mihalasky, M.J., Peters, S.G., Theordore, T.G., Ponce, D.A., John, D.A., and Berger, B.R., Assessment of metallic mineral resources in the Humboldt River basin, northern Nevada, with a section on Platinum-Group-Element (PGE) potential of the Humboldt mafic complex, by Zientek, M.L., Sidder, G.B., and Zierenberg, R.A.: U.S. Geological Survey Bulletin 2218, p. 71-97.

Kucks, R.P., Hill, P.L., and Ponce, D.A., 2006, Nevada magnetic and gravity maps and data: A web site for distribution of data: U.S. Geological Survey Data Series 234.


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