Most areas are artificially drained and used for cultivated crops. Principal crops are corn and soybeans and other crops include small grain. Native vegetation was commonly marsh grasses and sedges. Central and possibly northern Illinois. Includes areas previously mapped Drummer till substratum phase.
Extent is moderate.
Woodford County, Illinois, 1993. In some pedons there is a zone at the boundary between loess and till composed of strata or reworked glacial till, it contains less clay and more sand, and varies in thickness.