Combining U speciation and U isotope fractionation to evaluate the importance of naturally reduced sediments in controlling the mobility of uranium in the upper Colorado River Basin

Vincent Noel, SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Menlo Park, CA, United States, Pierre Lefebvre, Ecole Normale Supérieure Paris, Paris, France, Kristin Boye, Stanford Earth Sciences, Stanford, CA, United States, John Bargar, SLAC National Accelerator Laboratory, Menlo Park, United States, Katharine Maher, Stanford University, Earth System Science, Stanford, United States, Juan Lezama-Pacheco, Stanford University, Los Altos Hills, CA, United States, Emily Cardarelli, Stanford University, Earth System Science, Stanford, CA, United States, Sharon Bone, SLAC National Accelerator Laboratory, Menlo Park, CA, United States, William L Dam, Department of Energy Grand Junction, Grand Junction, CO, United States and Raymond H Johnson, Organization Not Listed, Washington, DC, United States