Geology topics

R.M. Bruce

Publications and source records attributed to R.M. Bruce.

5 recordsLinked to original sources

USGS1992

Geologic maps of the Big Mallard, Middle Bargamin, and Magruder additions to the Frank Church-River-of-No-Return Wilderness, Lemhi, and Idaho counties, Idaho

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Miscellaneous Field Studies Map↗

USGS1991

Reconnaissance geologic map of parts of the Twin Peaks and Blanca Peak quadrangles, Alamosa, Costilla, and Huerfano counties, Colorado

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Miscellaneous Field Studies Map↗

USGS1989

Reconnaissance geologic map of the Medano Pass Quadrangle and part of the Liberty Quadrangle, Alamosa, Huerfano, and Saguache counties, Colorado

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Miscellaneous Field Studies Map↗

USGS1987

Reconnaissance geologic map of the Sangre de Cristo Wilderness Study Area, south-central Colorado

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 to be submitted to the President and Congress. This report presents the results of geologic studies in the Sangre de Cristo Wilderness Study Area in the Rio Grande and San Isabel National Forests, south-central Colorado. The area was designated as a wilderness study area under Public Lay 96-560 in 1980.

Colorado↗

USGS1986

Geologic map of the Beck Mountain, Crestone Peak, and Crestone quadrangles, Custer, Huerfano, and Saguache counties, Colorado

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Miscellaneous Field Studies Map↗