Geologic units in Wyandotte county, Kansas

Kansas City Group (Middle Pennsylvanian- Missourian) at surface, covers 27 % of this area

Includes: Lane Shale,Wyandotte Limestone (base WY), Liberty Memorial Shale, Iola Limestone (base I), Chanute Shale (base CH), Dewey Limestone, Nellie Bly FM, Cherryvale FM, Dennis Limestone (base DN), Galeburg Shale, Mound Valley Limestone, Ladore Shale, Swope Limestone (base SW), Elm Branch Shale, Hertha Limestone.

Alluvium (Holocene to Pleistocene) at surface, covers 20 % of this area

unconsolidated sand, silt, clay, and gravel

Loess (Holocene to Pleistocene) at surface, covers 19 % of this area

eolian silts

Lansing Group (Middle Pennsylvanian- Missourian) at surface, covers 14 % of this area

Stanton Limestone- three limestone and two shales members, ranges from 15 to 130 ft. thick. Vilas Shale- sandy, carbonaceous gray shale with some sandstone and limestone locally, ranges from 5 to 120 ft. thick. Plattsburg Limestone- two limestone members seperated by shale, ranging from 25 to 115 ft. thick.

Drift (Pleistocene) at surface, covers 11 % of this area

sand, silt, clay, and some gravel

Douglas Group (Late Pennsylvanian- Virgilian) at surface, covers 9 % of this area

Lawrence FM (base LA)- mostly gray shale and sandstone with minor red shale, coal, gray limestone and conglomerate, thickness ranges from 140ft to 250 ft. Stranger FM- five members containing sandstone, shale, and minor limestone, coal and conglomerate ranging from 100 ft. to 180 ft. thickness.

Holocene series (Quaternary-Holocene Series) at surface, covers 0.3 % of this area

Alluvium - clay, silt, sand, and gravel.