Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 37 (1930) > Annual Issue
Document Type
Research
Abstract
The lithology of certain Benton (?) strata in Lyon County and adjacent parts of Minnehaha County, South Dakota is described. These rocks differ greatly from the common type of limestone and chalk of the Cretaceous of the Big Sioux and Missouri River region. The formation contains large quantities of siliceous material in the matrix and as spicules and in some beds as chert. Fragments of glass are common in one zone.
Publication Date
1930
Journal Title
Proceedings of the Iowa Academy of Science
Volume
37
Issue
1
First Page
275
Last Page
275
Copyright
©1930 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Tester, A. C.
(1930)
"A Note on the Stratigraphy of the Cretaceous in Northwestern Iowa,"
Proceedings of the Iowa Academy of Science, 37(1), 275-275.
Available at:
https://scholarworks.uni.edu/pias/vol37/iss1/63