State | Iowa |
---|---|
Name | Upper Cherokee Group |
Geologic age | Middle Pennsylvanian, middle Desmoinesian |
Lithologic constituents |
Major
Sedimentary > Clastic > Mudstone > Shale (Bed)shale/mudstone, light to dark gray, part silty to sandy; incidental red/maroon to brown; incidental carbonaceous
Sedimentary > Clastic > Siltstone (Bed)gray
Minor
Sedimentary > Carbonate > Limestone (Bed)part fossiliferous, part sandy
Sedimentary > Clastic > Sandstone (Bed)very fine to fine-grained
Incidental
Sedimentary > Coal (Bed)
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)phosphatic
|
References | Witzke, Brian J., Anderson, Raymond R., and Pope, John P., 2010, Iowa Geological and Water Survey, DNR, Bedrock Geologic Map of Iowa, OFM-2010-1. Scale 1:500,000. |
NGMDB product | |
Counties | Adair - Appanoose - Audubon - Boone - Calhoun - Carroll - Clarke - Crawford - Dallas - Davis - Decatur - Greene - Guthrie - Hamilton - Harrison - Jasper - Lucas - Madison - Mahaska - Marion - Monona - Monroe - Polk - Pottawattamie - Shelby - Story - Wapello - Warren - Wayne - Webster |