Lansing Group

Interval includes Plattsburg, Vilas, Stanton formations. Primary Lithologies: limestone, fossiliferous; shale/mudstone, light to dark gray. Secondary Lithologies: limestone, coated grain/Osagia; mudstone to siltstone, gray. Minor: black shale, phosphatic; mudstone, red-brown. Maximum thicknesses 45-78 ft (14-24 m).
State Iowa
Name Lansing Group
Geologic age Upper Pennsylvanian, upper Missourian
Lithologic constituents
Sedimentary > Carbonate > Limestone (Bed)fossiliferous; minor coated grain/Osagia
Sedimentary > Clastic > Mudstone > Shale (Bed)shale/mudstone, light to dark gray; incidental red-brown
Sedimentary > Clastic > Mixed-clastic > Siltstone-mudstone (Bed)gray
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)phosphatic

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 - Adams - Cass - Decatur - Madison - Mills - Pottawattamie - Ringgold - Taylor - Union