Some Preglacial Soils

In the region south of the Wisconsin Driftless area an old soil is occasionally found under the Kansan drift, generally resting on the bed rock, and often associated with laminated water-bedded clay and other silt. It is exposed under a bluff of drift in the southern part of Muscatine, Iowa. The material is here dark brown in color, mottled with small black fragments of vegetable tissue. The upper part is a dark mucky clay. The whole bed is only two or three inches in thickness. It lies below what appears to be pre-Kansan drift