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Science 26 October 1962:
Vol. 138. no. 3539, pp. 526 - 528
DOI: 10.1126/science.138.3539.526
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Articles

Pollen Sequence at Kirchner Marsh, Minnesota

Thomas C. Winter 1

1 U.S. Geological Survey, St. Paul, Minnesota

A pollen diagram from Kirchner Marsh, southeastern Minnesota, records a continuous vegetation sequence from the time of Late Wisconsin ice retreat from the region. The late-glacial and early postglacial portions of the diagram are correlated with a radiocarbon-dated diagram from Madelia, Minnesota. Both diagrams show a series of maxima of pollen types in the early postglacial that suggest a significant climatic change at that time. The Kirchner diagram, in addition, shows high percentages of nonarboreal pollen later in the postglacial that indicate an advance of prairie elements into the area between 7200 and 5000 years ago.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Mid-Holocene climate and the hemlock decline: the range limit of Tsuga canadensis in the western Great Lakes region, USA.
R. Calcote and R. Calcote (2003)
The Holocene 13, 215-224
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