CLAY MINERALOGY OF AN ALLUVIAL AQUIFER IN A MOUNTAINOUS, SEMIARID TERRAIN, AN EXAMPLE FROM RIFLE, COLORADO

W Crawford Elliott1, David Lim2, Laura K Zaunbrecher1, Rebecca A Pickering1, Kenneth Hurst Williams3, Alexis Navarre-Sitchler4, Philip E Long5, Vincent Noel6, John Bargar7 and Nikolla P Qafoku8, (1)Georgia State University, Atlanta, GA, United States, (2)University of Wisconsin Madison, Department of Geology and Geophysics, Madison, WI, United States, (3)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (4)Colorado School of Mines, Department of Geology & Geological Engineering, Hydrologic Science & Engineering, Golden, United States, (5)Lawrence Berkeley National Lab, Chelan, WA, United States, (6)SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Menlo Park, CA, United States, (7)SLAC National Accelerator Laboratory, Menlo Park, United States, (8)Pacific Northwest National Laboratory, Geosciences, Richland, WA, United States