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Pollen sequence at Kirchner Marsh, Minnesota

January 1, 1962

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.

Citation Information

Publication Year 1962
Title Pollen sequence at Kirchner Marsh, Minnesota
Authors T. C. Winter
Publication Type Article
Publication Subtype Journal Article
Series Title Science
Index ID 70010717
Record Source USGS Publications Warehouse