Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 2 (1894) > Annual Issue
Document Type
Research
Abstract
The Sioux quartzite is a formation made up of hard, flinty beds, of considerable thickness and extent, which are exposed principally along the Sioux River, in southeastern Dakota, southwestern Minnesota and northwestern Iowa. It is of particular interest to Iowans, for the reason it has been usually regarded as the most ancient geological formation occurring within the limits of the state-older than the lead-bearing rocks of northeastern Iowa, and older than the Cambrian sandstones which lie at the base of the Mississippi bluffs in the extreme corner of the state.
Publication Date
1894
Journal Title
Proceedings of the Iowa Academy of Sciences
Volume
2
Issue
1
First Page
218
Last Page
222
Copyright
©1894 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Keyes, Charles Rollin
(1894)
"Opinions Concerning the Age of the Sioux Quartzite,"
Proceedings of the Iowa Academy of Science, 2(1), 218-222.
Available at:
https://scholarworks.uni.edu/pias/vol2/iss1/46