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January 1, 1987

Quaternary geology of the southern Virginia part of the Chesapeake Bay Quaternary geology of the southern Virginia part of the Chesapeake Bay

No abstract available.

January 1, 1987

Reconnaissance geologic map of the Colona Quadrangle, Montrose and Ouray counties, Colorado Reconnaissance geologic map of the Colona Quadrangle, Montrose and Ouray counties, Colorado

No abstract available.

January 1, 1987

Reconnaissance geologic map of the Noatak C5, D5, D6, and D7 quadrangles, Alaska Reconnaissance geologic map of the Noatak C5, D5, D6, and D7 quadrangles, Alaska

No abstract available.

January 1, 1987

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

January 1, 1987

Sample locality map and potassium-argon ages and data for Cenozoic igneous rocks in the Tonopah 1 degree by 2 degrees Quadrangle, central Nevada Sample locality map and potassium-argon ages and data for Cenozoic igneous rocks in the Tonopah 1 degree by 2 degrees Quadrangle, central Nevada

No abstract available.

January 1, 1987

Sedimentologic and stratigraphic framework of the upper part of the Fort Union Formation, western Powder River basin, Wyoming Sedimentologic and stratigraphic framework of the upper part of the Fort Union Formation, western Powder River basin, Wyoming

The purpose of this study is to describe the stratigraphy and interpret the environments of deposition in the upper part of the Paleocene Fort Union Formation. Of all the lithofacies present within the study area, sandstone is the most dominant and makes up most of the upper part of the Fort Union Formation along the western edge of the Powder River basin, Wyoming. This sandstone...