Shale, conglomerate, sandstone, siltstone, limestone, and chert; Mississippian turbidite flysch from a western source; central Idaho (IDMc;0)

State	Idaho
Name	Shale, conglomerate, sandstone, siltstone, limestone, and chert; Mississippian turbidite flysch from a western source; central Idaho
Geologic age	Mississippian
Original map label	Mc
Comments	Argillitic shale, quartz arenite, and conglomerate of the Copper Basin Group are interpreted as turbiditic flysch, deposited in a submarine fan complex, with a western source in the Antler orogenic belt. Incidental limestones may represent west-thinning tongues, correlative with the White Knob Limestone Gp.
Primary rock type	shale
Secondary rock type	conglomerate
Other rock types	sandstone; siltstone; limestone; chert
Lithologic constituents	Major Sedimentary > Clastic > Conglomerate (Bed)granules to boulders of chert, quartzite, argillite Sedimentary > Clastic > Mudstone > Shale (Bed)argillitic Minor Sedimentary > Clastic > Siltstone (Bed)major in lower Copper Basin at BAyhorse Sedimentary > Clastic > Sandstone (Bed)quartzitic Incidental Sedimentary > Chemical > Chert (Lense)chert comprises 40 percent of Green Lake Ls bed Sedimentary > Carbonate > Limestone (Lense)argillaceous to sandy, micritic, cherty, bioclastic
Map references	Bond, J.G., Kauffman, J.D., Miller, D.A., and Venkatakrishnan, Ramesh, 1978, Geologic map of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, with contributions from U.S. Geological Survey, scale 1:500,000.
Unit references	Bond, J.G., Kauffman, J.D., Miller, D.A., and Venkatakrishnan, Ramesh, 1978, Geologic map of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, with contributions from U.S. Geological Survey, scale 1:500,000. Rember, W.C., and Bennett, E.H., 1979, Geologic map of the Idaho Falls quadrangle, Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, Geologic Map Series, Idaho Falls 2o quadrangle, scale 1:250,000. Paull, R.A., Wolbrink, M.A., Volkmann, R.G., and Grover, R.L., 1972, Stratigraphy of the Copper Basin Group, Pioneer Mountains, south-central Idaho: American Association of Petroleum Geologists Bulletin, v. 56, no. 8, p. 1370-1401. Skipp, Betty and Hall, W.E., 1975, Structure and Paleozoic stratigraphy of a complex of thrust plates in the Fish Creek Reservoir area, south-central Idaho: U.S. Geological Survey Journal of Research, v. 3, no. 6, p. 671-689. Link, P.K., Warren, Ian., Preacher, J.M., and Skipp, B.A., 1996, Stratigraphic analysis and interpretation of the Mississippian Copper Basin Group, McGowan Creek Formation and White Knob Limestone, south-central Idaho: in Longman, M.W., and Sonnenfeld, M.D., eds., Paleozoic Systems of the Rocky Mountain Region: Rocky Mountain Section, SEPM (Society of Sedimentary Geology), p. 117-144
Geographic coverage	Blaine - Butte - Caribou - Custer