Technical Report Archive & Image Library (TRAIL) - 2 Matching Results
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- Reconnaissance Geology of Western Mineral County, Montana
- From introduction: This reconnaissance study was undertaken to determine the major geologic features of the western part of Mineral County, Mont., principally in the drainage basin of the St. Regis River.
- Geology and Mineral Deposits of the St. Regis-Superior Area, Mineral County, Montana
- From introduction: The St. Regis-Superior area was studied during the summers of 1953 and 1954 as a part of geologic investigations by the U.S. Geologic Survey in and near the Coeur d'Alene district. The object of the present work was primarily threefold: to ascertain the main structural features in the area, with particular attention to the Osburn fault zone; to investigate the mineral deposits; and to determine the stratigraphic relations of the rocks.