During the progress of the soil survey of Jefferson County, Iowa observations of the Kansan gumbotil and the overlying loess have revealed a limited number of locations in this county and in adjacent Van Buren County in which there is a very uneven boundary between these two materials. This deformation of the gumbotil and loess contact appears to be attributable to periglacial conditions prevalent during a part of the Pleistocene.
Proceedings of the Iowa Academy of Science
© Copyright 1953 by the Iowa Academy of Science, Inc.
Schafer, George M.
"A Disturbed Buried Gumhotil Soil Profile in Jefferson County, Iowa,"
Proceedings of the Iowa Academy of Science, 60(1), 403-407.
Available at: https://scholarworks.uni.edu/pias/vol60/iss1/52