There is given below a typical or general section of the Missourian formation in Madison County, as given by Tilton and Bain. It is mainly to the rocks of this stage that reference will be made in the present paper.
Proceedings of the Iowa Academy of Science
©1906 Iowa Academy of Science, Inc.
Brown, F. A.
"A Contribution to Madison County Geology,"
Proceedings of the Iowa Academy of Science, 13(1), 203-206.
Available at: https://scholarworks.uni.edu/pias/vol13/iss1/26