Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 19 (1912) > Annual Issue
Document Type
Research
Abstract
The exact stratigraphic relations of, and the exact boundary line between, the latest Devonic formations and the earliest Carbonic rocks of the Mississippi valley north of the Missouri river have long remained some of the unsolved geographic problems. That the question should stand today much as it did 60 years ago is due chiefly to the circumstance that although three state geological surveys have repeatedly attacked it, all the necessary facts were not available in any one state alone. No observer seems to have had the opportunity to make critical investigations in all three of the states or to have gone over all of the ground between the mouth of the Missouri river and the Minnesota line.
Publication Date
1912
Journal Title
Proceedings of the Iowa Academy of Science
Volume
19
Issue
1
First Page
153
Last Page
156
Copyright
©1912 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Keyes, Charles
(1912)
"Nether Delimitation of Our Carbonic Rocks,"
Proceedings of the Iowa Academy of Science, 19(1), 153-156.
Available at:
https://scholarworks.uni.edu/pias/vol19/iss1/25