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Eolian sand deposited in lakes downwind of coastal sand dunes can record a history of paleoclimatic fluctuations. The eolian sand signals from sediment within the Grand Mere Lakes, Michigan, which are downwind of sand dunes along southeastern coastal Lake Michigan, record the same sunspot, climate history, and lake-level fluctuations observed elsewhere along the east-central Lake Michigan coastline. Sediment cores were extracted from the Grand Mere Lakes in Berrien County, Michigan, and analyzed for variations in weight percentage of sand with depth, the sand signal, at 1 cm sampling intervals. Radiocarbon dates obtained from terrestrial macrofossils within the cores were used...

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