Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 19 (1912) > Annual Issue
Document Type
Research
Abstract
The presence of great numbers of geodes of varying size and degree of development in the Keokuk beds of the Central Mississippi Valley has long been known to geologists, but their origin has been, from the earliest times, a disputed question, and, although there has been considerable speculation upon the subject, no theory of their formation has been, as yet, widely held.
Publication Date
1912
Journal Title
Proceedings of the Iowa Academy of Science
Volume
19
Issue
1
First Page
169
Last Page
172
Copyright
©1912 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Van Tuyl, Francis M.
(1912)
"The Origin of the Geodes of the Keokuk Beds,"
Proceedings of the Iowa Academy of Science, 19(1), 169-172.
Available at:
https://scholarworks.uni.edu/pias/vol19/iss1/29