Geologic map of the Bull Mountain area, Jefferson County, Montana

Weeks, R.A.

doi:10.3133/ofr74354

Cited by 2 publications

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“…Maps and reports from these studies formed the basis of compilations of the geology and mineral deposits of the southeast part of the quadrangle for the CUSMAP studies. The U.S. Geological Survey work included areal geologic mapping and mineral deposit studies (Becraft and others, 1963;Ruppel, 1961Ruppel, , 1963Becraft and Pinckney, 1961;Pinckney and Becraft, 1961;Smedes, 1968;Smedes and others, 1962;Knopf, 1963;Weeks, 1974), and related topical studies of the Boulder batholith (Hamilton and Myers, 1974;Klepper and others, 1971;Tilling, 1973;Tilling and others, 1968) and volcanic units such as the Lowland Creek Volcanics (Smedes, 1962).…”

Section: Previous Studiesmentioning

confidence: 99%

The Conterminous United States Mineral Assessment Program; background information to accompany folio of geologic, geochemical, remote sensing, and mineral resources maps of the Butte 1 degree x 2 degrees Quadrangle, Montana

Elliott¹,

Trautwein²,

Wallace³

et al. 1993

Circular

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The Butte 1 °X2° quadrangle in west-central Montana was investigated as part of the U.S. Geological Survey's Conterminous United States Mineral Assessment Program (CUSMAP). These investigations included geologic mapping, geochemical surveys, gravity and aeromagnetic surveys, examinations of mineral deposits, and specialized geochronologic and remote-sensing studies. The data collected during these studies were compiled, combined with available published and unpublished data, analyzed, and used in a mineral-resource assessment of the quadrangle. The results, including data, interpretations, and mineralresource assessments for nine types of mineral deposits, are published separately as a folio of maps. These maps are accompanied by figures, tables, and explanatory text. This circular provides background information on the Butte quadrangle, summarizes the studies and published maps, and lists a selected bibliography of references pertinent to the geology, geochemistry, geophysics, and mineral resources of the quadrangle. The Butte quadrangle, which includes the worldfamous Butte mining district, has a long history of mineral production. Many mining districts within the quadrangle have produced large quantities of many commodities; the most important in dollar value of production were copper, gold, silver, lead, zinc, manganese, molybdenum, and phosphate. At present, mines at several locations produce copper, molybdenum, gold, silver, lead, zinc, and phosphate. Exploration, mainly for gold, has indicated the presence of other mineral deposits that may be exploited in the future. The results of the investigations by the U.S. Geological Survey indicate that many areas of the quadrangle are highly favorable for the occurrence of additional undiscovered resources of gold, silver, copper, molybdenum, tungsten, and other metals in several deposit types.

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Section: Previous Studiesmentioning

confidence: 99%

The Conterminous United States Mineral Assessment Program; background information to accompany folio of geologic, geochemical, remote sensing, and mineral resources maps of the Butte 1 degree x 2 degrees Quadrangle, Montana

Elliott¹,

Trautwein²,

Wallace³

et al. 1993

Circular

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“…At the northeast corner of the Bull Mountain fault block in the JWD Lodes project area, veins in Paleozoic marble are mineralized, and most likely relate to skarn deposits in the adjacent, historically prolifi c Elkhorn mining district. This Paleozoic marble, which is probably the lower Amsden to upper Mission Canyon Formations of Mississippian age (Weeks, 1974), outcrops in numerous knobs for about 1 mi in a north-south direction and is overlain by cliff debris and alluvial sediments to the east and in contact with Elkhorn Mountain Volcanics to the west (fi g. 4).…”

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confidence: 99%

Proceedings of the Montana Mining and Mineral Symposium 2021

2022

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Geologic map of the Bull Mountain area, Jefferson County, Montana

Cited by 2 publications

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The Conterminous United States Mineral Assessment Program; background information to accompany folio of geologic, geochemical, remote sensing, and mineral resources maps of the Butte 1 degree x 2 degrees Quadrangle, Montana

The Conterminous United States Mineral Assessment Program; background information to accompany folio of geologic, geochemical, remote sensing, and mineral resources maps of the Butte 1 degree x 2 degrees Quadrangle, Montana

Proceedings of the Montana Mining and Mineral Symposium 2021

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