Big lake records preserved in a little lake’s sediment: an example from Silver Lake,Michigan, USA |
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| Authors: | Timothy G Fisher Walter L Loope William Pierce Harry M Jol |
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| Institution: | (1) Department of Earth, Ecological and Environmental Sciences, MS #604, University of Toledo, 2801 West Bancroft Street, Toledo, OH 43606, USA;(2) U.S Geological Survey, N8391 Sand Point Road, P.O. Box 40, Munising, MI 49862, USA;(3) 6103 East Lake Drive, Haslett, MI 48840, USA;(4) Department of Geography & Anthropology, University of Wisconsin–Eau Claire, Eau Claire, Wisconsin, USA |
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| Abstract: | We reconstruct postglacial lake-level history within the Lake Michigan basin using soil stratigraphy, ground-penetrating radar
(GPR), sedimentology and 14C data from the Silver Lake basin, which lies adjacent to Lake Michigan. Stratigraphy in nine vibracores recovered from the
floor of Silver Lake appears to reflect fluctuation of water levels in the Lake Michigan basin. Aeolian activity within the
study area from 3,000 years (cal yr. B.P.) to the present was inferred from analysis of buried soils, an aerial photograph
sequence, and GPR. Sediments in and around Silver Lake appear to contain a paleoenvironmental record that spans the entire
post-glacial history of the Lake Michigan basin. We suggest that (1) a pre-Nipissing rather than a Nipissing barrier separated
Silver Lake basin from the Lake Michigan basin, (2) that the Nipissing transgression elevated the water table in the Silver
Lake basin about 6,500 cal yr. B.P., resulting in reestablishment of a lake within the basin, and (3) that recent dune migration
into Silver Lake is associated with levels of Lake Michigan.
This is the fourth in a series of ten papers published in this special issue of Journal of Paleolimnology. These papers were
presented at the 47th Annual Meeting of the International Association for Great Lakes Research (2004), held at the University
of Waterloo, Waterloo, Ontario, Canada. P.F. Karrow and C.F.M. Lewis were guest editors of this special issue. |
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| Keywords: | Nipissing phase Lake Chippewa Lake Algonquin Transgression Silver Lake Lake Michigan Holocene Vibracoring |
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