In all the Mississippi valley there is no geologic formation that is so misunderstood, or so illy considered as regards its stratigraphic relations, as the massive, buff limestone terrane immediately underlying the Burlington limestone of Missouri and Iowa. Originally noticed by Prof. G. C. Swallow, in 1855, as a thick, homogeneous lithologic unit typically developed in central Missouri along the northern flanks of the Ozark dome, and extended into other parts of the state as the uppermost member of a tripartite "Chemung" group, little mention is later made of it.
Proceedings of the Iowa Academy of Science
©1916 Iowa Academy of Science, Inc.
"Terranal Affinities of Original Chouteau Limestone,"
Proceedings of the Iowa Academy of Science, 23(1), 113-118.
Available at: https://scholarworks.uni.edu/pias/vol23/iss1/17