Pollen sequence at Kirchner Marsh, Minnesota



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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.
Publication type Article
Publication Subtype Journal Article
Title Pollen sequence at Kirchner Marsh, Minnesota
Series title Science
Volume 138
Issue 3539
Year Published 1962
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Science
First page 526
Last page 528
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