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Publication Extents

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Reconnaissance geologic map of the Sangre de Cristo Wilderness Study Area, south-central Colorado
Bruce R. Johnson, David A. Lindsey, R.M. Bruce, Sandra J. Soulliere
1987, Miscellaneous Field Studies Map 1635-B
The Wilderness Act (Public Law 88-577, September 3, 1964) and related acts require the U.S. Geological Survey and the U.S. Bureau of Mines to survey certain areas on Federal lands to determine the mineral values, if any, that may be present. Results must be made available to the public and...
Texas ground-water quality
Jeffrey L. Strause
1987, Open-File Report 87-754
This report contains summary information on ground-water quality in one of the 50 States, Puerto Rico, the Virgin Islands, or the Trust Territories of the Pacific Islands, Saipan, Guam, and American Samoa. The material is extracted from the manuscript of the 1986 National Water Summary, and with the exception of...
Map showing the distribution and characteristics of plutonic rocks in the Tonopah 1 degree by 2 degrees Quadrangle, central Nevada
D. A. John
1987, Miscellaneous Field Studies Map 1877-J
Plutonic rocks, mostly granite and granodiorite, are widely distributed in the west two-thirds of the Tonopah 1 degree by 2 degree quadrangle, Nevada. These rocks were systematically studied as part of the Tonopah CUSMAP project. Studies included field mapping, petrographic and modal analyses, geochemical studies of both fresh and altered...