Lynn Walter

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Lynn Walter

Professor, Emerita

  • About

    Research Areas

    • Geochemistry of surface waters and groundwaters
    • Carbonate mineral weathering  fluxes from glacial drift soils
    • Carbon fluxes from river- groundwater interactions in Michigan watersheds
    • Interactions between surface waters and deep saline formation waters
    • Role of glaciation in groundwater recharge to MidContinent Basins
    • Origin of natural gas in Devonian Shales, Michigan and Illinois Basin

    Selected Publications

    2004   McIntosh, J.C., Walter, L.M., and Martini, A.M. Geochemical modification of Late-Devonian shale formation waters via microbial methanogenesis. GSA Bulletin 116,  220-237.

    2004 Szramek. K., Walter, L.M., and McCall, P. Arsenic mobility in groundwater/surface water systems in carbonate-rich Pleistocene glacial drift aquifers (Michigan). Applied Geochemistry, v. 19, 1137-1155.

    2004    Szramek, K and Walter, L.M., Impact of carbonate precipitation on riverine
    inorganic  carbon mass transport from a mid-continent, forested watershed. Aquatic  Geochemistry , v. 10, p 99-137.

    2006   McIntosh, J.C., and Walter, L.M.   Paleowaters in Silurian-Devonian carbonate aquifers: geochemical evolution of groundwater in the Great Lakes region since the Late Pleistocene. Geochimica et Cosmochimica Acta, vol 70, p. 2454-2479.

    2007 Walter, L.M,, Ku, T.C., Muehlenbachs, K, Patterson, W.P., , and L Bonnell
    Controls on the 13C of Dissolved Inorganic Carbon in Marine Pore Waters:  An Instructive Example from Biogenic Carbonate Sediments (South Florida Platform).   Deep Sea Research II vol 54, p. 1163-1200.

    2007    Williams. E, Szramek, K., Jin, L., Ku, T.C.W., and Walter, L.M. The carbonate
    system geochemistry of shallow groundwaters/surface water systems in        temperate glaciated watersheds (Michigan, USA):  Significance of open system dolomite weathering. Geological Society of America Bulletin, vol 119, p. 515-528

    2007 Szramek K., McIntosh J.C., Williams E.L., Kanduc T., Ogrinc N. and Walter L.M. Relative weathering intensities of calcite vs. dolomite in carbonate-bearing temperate zone watersheds: Carbonate geochemistry and fluxes from catchments within the St. Lawrence and Danube River Basin. G3, vol. 8, Q04002.  Doi:10.1029/2006GC001137.

    2008 Martini, A.M., Walter, L.M., and McIntosh, J.C. Identification of microbial and thermogenic gas components from Upper Devonian black shale cores, Illinois and Michigan basins. AAPG Bulletin. vol. 92; p. 309-326.

    2008   Jin, L., Hamilton, S.K. and Walter, L.M.  Mineral weathering rates in glacial   drift soils (SW Michigan, USA): New constraints from seasonal sampling  
      of waters and gases  at soil monoliths. Chemical Geology, vol. 249, p. 129-154.

    2008   Jin, L., Williams, E., Szramek, K., Walter, L. M. and Hamilton, S. K.  Silicate and
      carbonate mineral weathering in soil profiles developed on Pleistocene
      glacial drift (Michigan, USA): Mass balances based on soil water
      geochemistry.   Geochimica et Cosmochimica Acta, vol. 72, p. 1027-1042.

  • Education
    • Ph.D. University of Miami Marine, Geology 1983
    • M.S. Louisiana State University, Geology, 1978
    • B.A. Washington University, Geology, 1975