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Page 4816, results 120376 - 120400

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Mineral resource potential map of the Whitewater Wilderness Study Area, Riverside and San Bernardino counties, California
Jonathan C. Matti, Brett F. Cox, Curtis M. Obi, Robert E. Powell, Margaret Hinkle, Andrew Griscom, Edward L. McHugh
1982, Miscellaneous Field Studies Map 1478-A
Geological, geochemical, and geophysical evidence, together with a 'review of historical mining and prospecting activities, suggests that most of the Whitewater Wilderness Study Area has low potential for all types of mineral and energy resources- including precious and base metals, building stone and aggregate, fossil fuels, radioactive-mineral resources, and geothermal resources. One small...
Maps and interpretation of geochemical anomalies in the John Muir Wilderness, Fresno, Inyo, Madera and Mono counties, California
David A. Dellinger, Michael F. Diggles, E. A. Du Bray (compiler)
1982, Miscellaneous Field Studies Map 1185-B
A geochemical survey of the John Muir Wilderness was conducted by the U.S. Geological Survey between 1969 and 1978.  The 755-mi2 (1,956-km2) wilderness is located in the central Sierra Nevada, Calif. (fig. 1). Stream-sediment samples were collected at 1,434 sites in the wilderness and...
Mineral resource potential map of the Bighorn Mountains Wilderness Study Area (CDCA-217), San Bernardino County, California
Jonathan C. Matti, Brett F. Cox, Eduardo A. Rodriguez, Curtis M. Obi, Robert E. Powell, Margaret Hinkle, Andrew Griscom, Charles Sabine, Gary J. Cwick
1982, Miscellaneous Field Studies Map 1493-A
Geological, geochemical, and geophysical evidence, together with a review of historical mining and prospecting activities, suggests that most of the Bighorn Mountains Wilderness Study Area has low potential for the discovery of all types of mineral and energy resources-including precious and base metals, building stone and aggregate, fossil fuels, radioactive-mineral...
Mineral resource potential map of the Troublesome Roadless Area, McCreary County, Kentucky
W. R. Sigleo, A. H. Randall III, R.B. Ross, R. W. Hammack
1982, Miscellaneous Field Studies Map 1341-C
A geologic and geochemical investigation and a survey of existing mines and prospects have been conducted to determine the mineral resource potential of the Troublesome Roadless Area, McCreary County, Ky. The study area comprises six tracts totaling about 2,943 acres in the Daniel Boone National Forest. It is in the...
Mineral resources potential map of the Lost Cove and Harper Creek Roadless Areas, Avery and Caldwell counties, North Carolina
T.M. Crandall, R. B. Ross, J. W. Whitlow, W. R. Griffitts
1982, Miscellaneous Field Studies Map 1391-A
A geologic, geophysical, and geochemical investigation and a survey of mines, quarries, and prospects have been conducted to evaluate the mineral resource potential of the Lost Cove and Harper Creek Roadless Areas, Avery and Caldwell Counties, North Carolina. The study area lies within the Blue Ridge physiographic province and is...
Geologic maps of the Sacramento-San Joaquin Delta, California
Brian F. Atwater
1982, Miscellaneous Field Studies Map 1401
The Sacramento-San Joaquin Delta, the arm of the San Francisco Bay estuary that reaches into the Central Valley of California, differs from typical coastal-plain deltas in three important respects.  First, rather than meeting the ocean individually and directly, all major waterways of this delta discharge via a single constricted outlet...
Geologic, geochemical and mineral resource potential map of the Piney Creek Wilderness, Stone and Barry counties, Missouri
Walden P. Pratt, Ralph L. Erickson, Kenneth C. Thomson, Clarence Ellis
1982, Miscellaneous Field Studies Map 1494
There is no evidence of significant metallic-mineral deposits in the rock units that are exposed at the surface in the wilderness, but there may be some potential for mineral deposits of two different types at depths from 400ft (120 m) to more than 2,100 ft (640 m) below the surface....
Mineral resource potential map of the Gila-San Francisco Wilderness Study Area, Graham and Greenlee counties, Arizona
Donlad H. Richter, Douglas P. Klein, Viki A. Lawrence, Michael Lane
1982, Miscellaneous Field Studies Map 1315-B
The mineral resource potential of the Gila-San Francisco Wilderness Study Area (AZ-040-022/023/024) is low (fig. 2). Although favorable geologic environments for placer gold deposits and manganese vein deposits are present in the study area, the probability of discovering economically exploitable deposits of these metals is low, and not encouraging. Even...