Reconstructing Water Levels in the Lake Michigan Basin from Embayed Lakes

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  • More documentation of the active sand and snow. The upper right photo shows snow on top of fresh sand, which is on top of a frozen crest of sand. The lower left shows a similar sequence, but we didn’t dig down to the frozen crest and note there are more snow layers in the top layer.
  • The following are pictures documenting the deposition of sand on the lake ice of Lake Michigan showing that the sand is indeed blowing on the lake. Here you can see the dunes in the background with the sand along with some snow deposited here on the ice
  • Radiocarbon dates were obtained from 3 locations throughout the unit to aid in comparison to the Baedke and Thompson curve. When these results were compared to the Baedke and Thompson curve, there appeared to be a positive correlation between high lake levels and high sand percents.
  • Reconstructing Water Levels in the Lake Michigan Basin from Embayed Lakes

    1. 1. Reconstructing Water Levels in the Lake Michigan Basin from Embayed Lakes Tim Fisher Michigan University of Toledo, OHWisconsinImage from: http://www.savannah-weather.com/poes/extra/michigan.jpg
    2. 2. 2003 1974 How do you make investments?
    3. 3. Embayed Lakes Outline  Location  Michigan Lake Level History  Geomorphic Evidence  Sedimentologic Evidence  Working with cores & geomorphic data to generate a lake level curve  Eolian sand as a LL proxyImages from Google Maps
    4. 4. Study SitesToledo
    5. 5. L Strandlines of glacial Lake Chicago Nip iss ingCalume t Glenwood Michigan Lake Level History
    6. 6. Late glacial & Holocene lake levels in the Lake Michigan basin 14 CFisher (2002) modifiedfrom Hansel et al. (1985)
    7. 7. Two Creeks SiteLogs in lakesediment andoverlying tillDated at 11,85014 C yr BP or13,600 cal yr BP till Lac . till
    8. 8. >5 0 s ta tm p s /<0 . 1k m 2 14 C D u es 8 12 0 ±10 0 B P 8 3 2 0 ±7 0 B P 8 3 2 0 ±7 0 B P Olson site8 3 8 0 ±10 0 B P ~9300 cal yr BP Olsen site in Lake Michigan, 26 m depth Chrzastowski et al. (1991)
    9. 9. Late glacial & Holocene lake levels in the Lake Michigan basinFisher (2002) modifiedfrom Hansel et al. (1985)
    10. 10. NBSCause of Nipissing transgression is uplift of the North Bay sill (NBS)
    11. 11. Late glacial & Holocene lake levels in the Lake Michigan basinFisher (2002) modifiedfrom Hansel et al. (1985)
    12. 12. Platte Embayment, Sleeping Bear Dunes, MI
    13. 13. strandplain
    14. 14. New beach ridge ~1986
    15. 15. Thompson with peelsTodd Thompson, IGS
    16. 16. Calendar years 1 2 3 4 5 Distance landwards from modern shoreline (km)Elevation (m) Thompson & Baedke (GSA Bull 1997)
    17. 17. New ridge ~1985 2011 Lake Michigan relative lake level curve Composite Baedke and Thompson, JGLR 2000
    18. 18. ?Amber Boudreau’s UT MS thesis
    19. 19. Baedke & Thompson, 2000
    20. 20. Coring Targets Shallow Barrier-dune WetlandLake Michigan ComplexLake Michigan Barrier-dune Small Lake Complex Big lake records preserved in a little lake’s sediment:
    21. 21. DEM of Study area
    22. 22. Kelly WeyerAmber Boudreau(nee Lahners) In review
    23. 23. Field MethodsRV Perforator Coring Tube Piston
    24. 24. Fisher et al. 2007
    25. 25. Fisher et al. 2007
    26. 26. Laminated mud marl peat peat Laminated marl? Fisher et al. 2007 (J Paleolim)
    27. 27. Silver Lake lithostratigraphic logsFisher et al. 2007 (J. Paleolim)
    28. 28. Stony Lake ContactLake Michigan Barrier-dune embayed lake Small Lake Complex i GyttjaModel of contact Silver Lake Contact Gyttja Marl Peat
    29. 29. Fisher et al. 2012J. Paleolim
    30. 30. Figure 6. Contour map of ICE-3G global postglacial r ebound–derived velocities in the Great Lakes area. Contour interval—3 cm/century. From Mainville & Craymer (2005) GSA BullFigure 7. Contour map of vertical velocities derived from water level gauges over the Great Lakes surrounded with ICE-3G–derivedvelocities. Contour inter val—3 cm/century.
    31. 31. peat gyttjaHamlinPentwaterSilverStonyWhite
    32. 32. Active sand sheet Cabins at great prices!Hansen et al. (Aeol R) Exhumed forest
    33. 33. Niveo-aeolian activity, Silver Lake State Park, MI
    34. 34. Evidence of ActiveSand on the Dunes
    35. 35. 140 100 144 152 156 75 160 160R % 164 50 168 172 176 25 179 179R 209Sand in Core SL01-5 0 223 225 1 2 3 4 5 phi 235 244
    36. 36. sand curve compared toBaedke & Thompson (2000) curve Fisher & Loope, 2005
    37. 37. Toleston
    38. 38. Hanes, 2010
    39. 39. Hanes, 2010
    40. 40. SummaryLake levels at embayed lakes can be reconstructed by:-Strandline geomorphology-Drowned Subaerial deposits-Lacustrine deposits
    41. 41. References Fisher, T. G., and Loope, W. L. 2004. Lake-level variability in Silver Lake, Michigan: A response to fluctuations in lake levels of Lake Michigan. Michigan Academician 35, 373-385. Fisher, T. G., and Loope, W. L. 2005. Aeolian sand preserved in Silver lake: A reliable signal of Holocene high stands of Lake Michigan. The Holocene 15, 1072-1078. Fisher, T. G., Loope, W. L., Pierce, W. C., and Jol, H. M. 2007. Big lake records preserved in a little lake’s sediment: an example form Silver Lake, Michigan, USA. Journal of Paleolimnology 37, 365-382. Fisher, T. G., Weyer, K. A., Boudreau, A. M., Martin-Hayden, J. M., Krantz, D. E., and Breckenridge, A. 2012. Constraining Holocene lake levels and coastal dune activity in the Lake Michigan basin. Journal of Paleolimnology 47, 373-390. Hansen, E. C., Fisher, T. G., Arbogast, A. F., and Bateman, M. D. 2010. Geomorphic history of low-perched, transgressive dune complexes along the southeastern shore of Lake Michigan. Aeolian Research 1, 111-127. Timmons, E. A., Fisher, T. G., Hansen, E. C., Eiasman, E., Daly, T., and Kashgarian, M. 2007. Elucidating eolian dune history from lacustrine sand records in the Lake Michigan coastal zone, USA. The Holocene 17, 789-801.

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