Dolostone, quartzite, shale, and limestone; Upper to Middle Ordovician marine continental-shelf deposits; east central Idaho (IDOu;0)

State	Idaho
Name	Dolostone, quartzite, shale, and limestone; Upper to Middle Ordovician marine continental-shelf deposits; east central Idaho
Geologic age	Late and Middle Ordovician
Original map label	Ou
Comments	Curkin (1962) interprets dolomite, limestone, shale, dolomitic sandstone and dolomitic siltstone of the Saturday Mountain Fm as transitional between the turbiditic argillites of the Phi Kappa Fm, ot the western eugeosynclinal (or continental-slope) facies and the Fish Haven Dolomite of the eastern miogeosynclinal (or continental-shelf) facies.
Primary rock type	dolostone (dolomite)
Secondary rock type	arenite
Other rock types	shale; limestone
Lithologic constituents	Major Sedimentary > Carbonate > Dolostone (Bed)dolomite, and sandy dolomite Minor Sedimentary > Clastic > Mudstone > Shale (Bed)shaly partings, fossiliferous limy shale beds Metamorphic > Quartzite (Bed)Kinnikinic Quartzite, and dolomitic sandstone Incidental Sedimentary > Carbonate > Limestone (Bed)limestone and magnesian limestone Sedimentary > Clastic > Siltstone (Bed)dolomitic siltstone
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. Isaacson, P.E., 1983, Stratigraphic correlation of the Paleozoic and Mesozoic rocks of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, Information Circular 37. Ross, C.P., 1934, Correlation and interpretation of Paleozoic stratigraphy in south-central Idaho: Geological Society of America Bulletin, v. 45, no. 5, p. 937-1000. Rember, W.C. and Bennett, E.H., 1979, Geologic map of the Challis quadrangle, Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, Geologic Map Series, Challis 2o quadrangle, scale 1:250,000. Crittenden, M.D., Schaeffer, F.E., Trimble, D.E., and Woodward, L.A., 1971, Nomenclature and correlations of some upper Precambrian and basal Cambrian sequences in western Utah and southeastern Idaho: Geological Society of America Bulletin, v. 82, no. 3, p. 581-602.
Geographic coverage	Custer - Lemhi