Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 87 (1980) > Number 2
Document Type
Research
Keywords
Palynology, Quaternary, Farmdalian, Paleoclimatology, Paleocology
Abstract
Core samples of peat from beneath Wisconsinian loess in Des Moines County, Iowa, were analyzed for pollen. The pollen sequence, dating from 24,900 to 28,720 RCYBP (radiocarbon years before present), was divided into 2 zones based on relative pollen percentages and pollen concentration. Zone B, at the base of the peat, is dominated by Pinus and Picea and is interpreted to represent a closed-coniferous forest, comparable to the modern boreal forest. Zone A, at the very top of the peat, is marked by the decline of Pinus and the increased importance of Picea. This is a regional event which marks the change to the late-glacial Picea forest which was devoid of Pinus.
Publication Date
June 1980
Journal Title
Proceedings of the Iowa Academy of Science
Volume
87
Issue
2
First Page
41
Last Page
44
Copyright
©1980 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Hallberg, George R.; Baker, Richard G.; and Legg, Thomas
(1908)
"A Mid-Wisconsinan Pollen Diagram From Des Moines County, Iowa,"
Proceedings of the Iowa Academy of Science, 87(2), 41-44.
Available at:
https://scholarworks.uni.edu/pias/vol87/iss2/3