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December 31, 1984

Tectonstratigraphic terranes in southwestern Oregon Tectonstratigraphic terranes in southwestern Oregon

No abstract available.

Authors

M. Clark Blake

Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center

December 31, 1984

Tectonostratigraphic terranes of the San Francisco Bay Region Tectonostratigraphic terranes of the San Francisco Bay Region

No abstract available.

Authors

M. Clark Blake, D. G. Howell, A. S. Jayko

December 31, 1984

Geology of the Ruby Mountains-East Humboldt Range, Nevada: A Cordilleran metamorphic core complex Geology of the Ruby Mountains-East Humboldt Range, Nevada: A Cordilleran metamorphic core complex

No abstract available.

Authors

A.W. Snoke, Keith A. Howard

January 1, 1984

Geological Survey research, fiscal year 1981 Geological Survey research, fiscal year 1981

A summary of recent significant scientific and economic results accompanied by a list of geologic, hydrologic, and cartographic investigations in progress.

Authors

Water Resources Division U.S. Geological Survey

Geology, Energy, and Minerals Mission Area, Ecosystems Mission Area, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Alaska Science Center, Geology, Minerals, Energy, and Geophysics Science Center

January 1, 1984

Statistical relations among earthquake magnitude, surface rupture length, and surface fault displacement Statistical relations among earthquake magnitude, surface rupture length, and surface fault displacement

In order to refine correlations of surface-wave magnitude, fault rupture length at the ground surface, and fault displacement at the surface by including the uncertainties in these variables, the existing data were critically reviewed and a new data base was compiled. Earthquake magnitudes were redetermined as necessary to make them as consistent as possible with the Gutenberg methods...

Authors

M. G. Bonilla, R. K. Mark, J. J. Lienkaemper

January 1, 1984

Wilderness mineral potential: Assessment of mineral-resource potential in U.S. Forest Service lands studied in 1964-1984: Volume 1 Wilderness mineral potential: Assessment of mineral-resource potential in U.S. Forest Service lands studied in 1964-1984: Volume 1

Under the provisions of the Wilderness Act (Public Law 88-577, September 3, 1964) and subsequent related legislation, the U.S. Geological Survey (USGS) and the U.S. Bureau of Mines (USBM) have been conducting mineral surveys of wilderness and primitive areas, and of other national forest lands being considered for wilderness designation. The Wilderness Act directs that the results of...

January 1, 1984

Paleomagnetic constraints on the interpretation of early Cenozoic Pacific Northwest paleogeography Paleomagnetic constraints on the interpretation of early Cenozoic Pacific Northwest paleogeography

Widespread Cenozoic clockwise tectonic rotation in the Pacific Northwest is an established fact; however, the geologic reconstructions based on these rotations are the subject of continuing debate. Three basic mechanisms have been proposed to explain the rotations: (1) simple shear rotation of marginal terranes caught in the dextral shear couple between oceanic plates and North America;...

Authors

Ray E. Wells