State | South Dakota |
---|---|
Name | Pierre Shale |
Geologic age | Upper Cretaceous |
Lithologic constituents |
Major
Sedimentary > Clastic > Mudstone > Claystone > Bentonite (Bed)Fissile to blocky shale with persistent beds of bentonite
Sedimentary > Clastic > Mudstone > Shale (Bed)Blue-gray to dark-gray, fissile to blocky shale with persistent beds of bentonite, black organic shale, and light-brown chalky shale.
Minor
Sedimentary > Carbonate (Bed)Abundant carbonate and ferruginous concretions
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Conglomerate (Bed)
|
References | Tomhave, D.W., and Schulz, L.D., 2004, Bedrock Geologic Map Showing Configuration of the Bedrock Surface in South Dakota East of the Missouri River, South Dakota Geological Survey, GM 9, scale 1:500,000. |
NGMDB product | |
Counties | Aurora - Beadle - Bon Homme - Brookings - Brown - Brule - Buffalo - Butte - Campbell - Charles Mix - Clark - Codington - Corson - Custer - Davison - Day - Deuel - Dewey - Douglas - Edmunds - Fall River - Faulk - Grant - Gregory - Haakon - Hamlin - Hand - Harding - Hughes - Hutchinson - Hyde - Jackson - Jerauld - Jones - Kingsbury - Lake - Lyman - McCook - McPherson - Marshall - Meade - Mellette - Miner - Moody - Pennington - Potter - Roberts - Sanborn - Shannon - Spink - Stanley - Sully - Todd - Tripp - Turner - Walworth - Yankton - Ziebach |