Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 44 (1937) > Annual Issue
Document Type
Research
Abstract
The existing geological maps of Iowa show a continuous blanket of Cretaceous rocks underlying the glacial drift of northwest Iowa. Previous workers have recognized that the Cretaceous was not continuous under the drift and might have a very irregular distribution along the borders as mapped. As a result of over two years of extensive sub-surface studies, assisted during the last nine months by H. G. Hershey, considerable revision of the boundaries of the Cretaceous has been made.
Publication Date
1937
Journal Title
Proceedings of the Iowa Academy of Science
Volume
44
Issue
1
First Page
133
Last Page
134
Copyright
©1937 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Tester, A. C.
(1937)
"New Mapping of Geological Boundaries of Northwest Iowa,"
Proceedings of the Iowa Academy of Science, 44(1), 133-134.
Available at:
https://scholarworks.uni.edu/pias/vol44/iss1/35