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Mineral Resources On-Line Spatial Data

Clay, silt, sand, and gravel; Late Pleistocene glacial-lake sediments; Basin and Range province

Pleistocene glacial-lake, ponded-water, and shoreline sediments.
StateIdaho
NameClay, silt, sand, and gravel; Late Pleistocene glacial-lake sediments; Basin and Range province
Geologic ageLate Pleistocene
Original map labelQpd
CommentsLake Bonneville sediments in southeast Idaho: lake-shore deposits of gravel and sand of the Provo, Bonneville, and Alpine Fms grade basinward to pink silt and clay. Qpd also includes Main Canyon Fm, deposited in Pleistocene Lake Thatcher, and glacio-lacustrine deposits of the Kootenai River valley, deposited in Pleistocene Kootenai Lake.
Primary rock typeglaciolacustrine
Secondary rock typesilt
Other rock typessand; gravel
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > Sand (Lacustrine)coarse near-shore glacial-lake deposits
Unconsolidated > Fine-detrital > Silt (Lacustrine)silty deepwater glacial-lake deposits
Incidental
Unconsolidated > Coarse-detrital > Gravel (Lacustrine)deltaic gravel deposits near old lake inlets
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.
Alt, D.D., and Hyndman, D.W., 1989, Roadside geology of Idaho: Missoula, Montana, Mountain Press Publishing Co., 393 p.
Oriel, S.S., and Platt, L.B., 1980, Geologic map of the Preston 1o x 2o quadrangle, southeastern Idaho and western Wyoming: U.S. Geological Survey Miscellaneous Investigations Series, Map I-1127, scale 1:250,000.
Miller, F.K., Burmester, R.F., Miller, D.M., Powell, R.E., and Derkey, P.D., 1999, Digital geologic map of the Sandpoint 1o x 2o quadrangle, Washington, Idaho, and Montana: U.S. Geological Survey Open-File Report OF 99-144, scale 1:250,000 with report, 71 p.
Rember, W.C., and Bennett, E.H., 1979, Geologic map of the Pocatello quadrangle, Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, Geologic Map Series, Pocatello 2o quadrangle, scale 1:250,000.
Geographic coverageBannock - Boundary - Caribou - Cassia - Franklin - Oneida

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