Limestone, dolostone, sandstone, siltstone, and chert; Lower Permian to Lower Pennsylvanian marine continental-shelf deposits; east-central Idaho (IDPM;0)

State	Idaho
Name	Limestone, dolostone, sandstone, siltstone, and chert; Lower Permian to Lower Pennsylvanian marine continental-shelf deposits; east-central Idaho
Geologic age	Early Permian to Early Pennsylvanian
Original map label	PM
Primary rock type	limestone
Secondary rock type	dolostone (dolomite)
Other rock types	arenite; siltstone; chert
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Bed)fossiliferous, especially in lower member Minor Sedimentary > Carbonate > Dolostone (Bed)abundant in upper part of upper member Sedimentary > Clastic > Sandstone > Arenite (Bed)quartzose calcareous sandstone Incidental Sedimentary > Chemical > Chert (Lense)up to 40 percent chert nodules in upper dolomite Sedimentary > Clastic > Siltstone (Bed)cherty limestone and dolostone with chert nodules
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. Lewis, R.S., Burmeister, R.F., Bennett, E.H., and White, D.L., 1990, Preliminary geologic map of the Elk City region, Idaho: Moscow, Idaho, Idaho Geological Survey Technical Report 90-2, scale 1:100,000 with pamphlet, 5 p. [http://www.idahogeology.org/PDF/Technical_Reports_(T)/TR-90-2.pdf]
Geographic coverage	Butte - Clark - Custer - Lemhi