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Document Type
Research
Abstract
Outcrops of the Maquoketa shale are limited to the eastern portions of Jackson County. Their position is controlled chiefly by the gentle regional dip to the southwest which in the north brings the basal beds and the underlying Galena formation to the surface and to the south in Clinton County causes the uppermost Maquoketa beds to disappear under the Silurian. This dip also allows the Maquoketa outcrops to extend progressively farther upstream in the beds of the northern east-flowing creeks.
Publication Date
1924
Journal Title
Proceedings of the Iowa Academy of Science
Volume
31
Issue
1
First Page
341
Last Page
345
Copyright
©1924 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Ladd, H. S. and Shale, Maquoketa
(1924)
"Notes on the Geology of Jackson County, Iowa,"
Proceedings of the Iowa Academy of Science, 31(1), 341-345.
Available at:
https://scholarworks.uni.edu/pias/vol31/iss1/109