62d6309fb32e1310VgnVCM100000c2b1d38dRCRDapproved/UMICH/LSA People/WWalter,Lynn42d6309fb32e1310VgnVCM100000c2b1d38d____WalterLynnlmwalterProfessor, Emerita<p><b>Research Areas</b></p> <ul> <li>Geochemistry of surface waters and groundwaters</li> <li>Carbonate mineral weathering &nbsp;fluxes from glacial drift soils</li> <li>Carbon fluxes from river- groundwater interactions in Michigan watersheds</li> <li>Interactions between surface waters and deep saline formation waters</li> <li>Role of glaciation in groundwater recharge to MidContinent Basins</li> <li>Origin of natural gas in Devonian Shales, Michigan and Illinois Basin</li> </ul> <p><b>Selected Publications</b></p> <p>2004 &nbsp;&nbsp;McIntosh, J.C., Walter, L.M., and Martini, A.M. Geochemical modification of Late-Devonian shale formation waters via microbial methanogenesis. GSA Bulletin 116, &nbsp;220-237.</p> <p>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.</p> <p>2004 &nbsp;&nbsp;&nbsp;Szramek, K and Walter, L.M., Impact of carbonate precipitation on riverine<br> inorganic &nbsp;carbon mass transport from a mid-continent, forested watershed. Aquatic &nbsp;Geochemistry , v. 10, p 99-137.</p> <p>2006 &nbsp;&nbsp;McIntosh, J.C., and Walter, L.M. &nbsp;&nbsp;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.</p> <p>2007 Walter, L.M,, Ku, T.C., Muehlenbachs, K, Patterson, W.P., , and L Bonnell<br> Controls on the 13C of Dissolved Inorganic Carbon in Marine Pore Waters: &nbsp;An Instructive Example from Biogenic Carbonate Sediments (South Florida Platform). &nbsp;&nbsp;Deep Sea Research II vol 54, p. 1163-1200.</p> <p>2007 &nbsp;&nbsp;&nbsp;Williams. E, Szramek, K., Jin, L., Ku, T.C.W., and Walter, L.M. The carbonate<br> system geochemistry of shallow groundwaters/surface water systems in &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;temperate glaciated watersheds (Michigan, USA): &nbsp;Significance of open system dolomite weathering. Geological Society of America Bulletin, vol 119, p. 515-528</p> <p>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. &nbsp;Doi:10.1029/2006GC001137.</p> <p>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.</p> <p>2008 &nbsp;&nbsp;Jin, L., Hamilton, S.K. and Walter, L.M. &nbsp;Mineral weathering rates in glacial &nbsp;&nbsp;drift soils (SW Michigan, USA): New constraints from seasonal sampling &nbsp;<br> &nbsp;&nbsp;of waters and gases &nbsp;at soil monoliths. Chemical Geology, vol. 249, p. 129-154.</p> <p>2008 &nbsp;&nbsp;Jin, L., Williams, E., Szramek, K., Walter, L. M. and Hamilton, S. K. &nbsp;Silicate and<br> &nbsp;&nbsp;carbonate mineral weathering in soil profiles developed on Pleistocene<br> &nbsp;&nbsp;glacial drift (Michigan, USA): Mass balances based on soil water<br> &nbsp;&nbsp;geochemistry. &nbsp;&nbsp;Geochimica et Cosmochimica Acta, vol. 72, p. 1027-1042.</p>3d604cd11aed1310VgnVCM100000c2b1d38d____Ph.D. University of Miami Marine, Geology 1983 ;M.S. Louisiana State University, Geology, 1978 ;B.A. Washington University, Geology, 1975/UMICH/earth/Home/People/CVs/LMWalterCV2014.pdfmrwizard1395937435517ahudon;swilkin;mrwizardearth142d6309fb32e1310VgnVCM100000c2b1d38d____52d6309fb32e1310VgnVCM100000c2b1d38d____