Below is an open access and interesting and comprehensive study of the
Late Quaternary prehistoric wildfire record for east-central Michigan. Ballard, J.P., 2009. A lateglacial paleofire record for east-central Michigan ??MS thesis, University of Cincinnati, Arts and Sciences. https://etd.ohiolink.edu/pg_10?0::NO:10:P10_ACCESSION_NUM:ucin1250268463#abstract-files In part the abstract states: "The results show contemporaneous fire not only at 12,900 BP but multiple times between 14,500 and 12,900 BP. This synchronicity of the fires between 14,500 and 12,900 BP suggests some as-yet-indeterminate large- scale natural cause, or causes. From 12,900 BP on into the Holocene, the pattern changes. Fires are continuous with high charcoal peaks at Swift Lake, continuous at Slack Lake but with slightly lower charcoal peaks compared to Swift, and having much lower peaks at Lake Sixteen and Big Fish Lake (charcoal is present but at very low levels)." Yours, Paul H.
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