Deglacial chronology of the Sturgis Moraine in south-central Michigan and northeast Indiana
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Date
2014-10-19
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Abstract
The landscape of south-central Michigan and northeastern Indiana was formed from the retreat of the Saginaw Lobe of the LIS. Studying this landscape aids an understanding of the climate conditions during the retreat of the lobe from its LGM position. The purpose of this study is to generate chronology for the retreat of the Saginaw Lobe by dating the Sturgis Moraine. Previous work suggests that the Sturgis Moraine formed sometime between 15.5 14C and 16.1 14C kyrs BP. To date the Sturgis Moraine, Livingstone sediment cores were collected from lakes associated with the moraine. Ages of 13.7±6014C, 13.75±8014C, and 13.3±6014C kyrs BP were from wood fragments at the bottom of each sediment core. These ages are similar to the age of the Ft. Wayne Moraine and the Valparaiso Moraine.
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This poster was presented at the 2014 Geological Society of America Annual Meeting in Vancouver, British Columbia, Canada,19-22 October, 2014.
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glacial history, Saginaw Lobe, Sturgis Moraine
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