Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 90 (1983) > Number 4
Document Type
Research
Keywords
palynology, Quaternary, till stratigraphy
Abstract
Erosion along Waterman Creek, O'Brien County, Iowa, has exposed two tills separated by a peat bed. The lower till is a pre-Illinoian till, based on lithological analyses, which crops out in the stream valleys and roadcuts along the Little Sioux River. It is also the same till which occurs at the surface west of Mill Creek in O'Brien County. Palynological analyses of the 38 cm thick peat bed indicate that a boreal forest containing abundant spruce and larch trees inhabited this area for a period of time before 40,000 RCYBP. This vegetation is similar to the late-glacial vegetation of northwestern Iowa, approximately 12,000 RCYBP.
Publication Date
December 1983
Journal Title
Proceedings of the Iowa Academy of Science
Volume
90
Issue
4
First Page
125
Last Page
127
Copyright
©1983 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Van Zant, Kent L.
(1983)
"Lithological and Palynological Analyses of a Quaternary Exposure, Waterman Creek, O'Brien County, Iowa,"
Proceedings of the Iowa Academy of Science, 90(4), 125-127.
Available at:
https://scholarworks.uni.edu/pias/vol90/iss4/3