Light gray, tan and brown fine to coarse sand; some clay silt and gravel.
Gray to brownish gray clay and silty clay, reddish brown in the Red River Valley, some sand and gravel locally.
Gray and brown silt, silty clay, some very fine sand, reddish brown along the Red River.
Light gray, tan and brown fine to coarse sand; some clay silt and gravel. Overlain by 1-9 meters of loess.