1. Bureau of Economic Geology, Jackson School of Geosciences; University of Texas at Austin; Austin Texas USA
2. Geosciences Rennes; UMR CNRS 6118, Université de Rennes 1; Rennes France
3. Department of Geological Sciences; University of Texas at Austin; Austin Texas USA
4. Surface Water Resources Division, Water Science and Conservation; Texas Water Development Board; Austin Texas USA
5. Center for Space Research; University of Texas at Austin; Austin Texas USA