BIOGRAPHICAL. Current Position: Senior Scientist; U.S. Geological Survey, Geologic Discipline, Denver CO. Personal Data: b Los Angeles CA, October, 23, 46. Education: UCLA BS (Chemistry) 68; UCLA PhD 74 (Geochemistry); Postdoctoral Fellow (Geology); Yale University; 75. Honors & Awards: Meritorious and Distinguished Service Awards, U.S. Department of Interior; Presidential Rank Award. Professional Experience: Research Chemist, USGS 1974-2003, Senior Scientist USGS, 2004-present. Concurrent Positions: President, Geochemical Society 08-09, Acting Chief Scientist for Geology, USGS, 05-06; Associate Editor, Geochimica Cosmochimica Acta -01-06 (also 80-84), Associate Editor American Journal of Science 83-95, Associate Editor, Economic Geology 83-89; Co-Chair and Science Lead - USGS Science Strategy Team 06-07, Co-Director John Wesley Powell Center for Analysis and Synthesis, 09-present, Member National Science Foundation Division of Earth Sciences Review Panel for Geology and Paleontology 97-01, Affiliated Scientist, Minerals, Metals, Metalloids and Toxicity Program, SUNY Stony Brook 2006-present; Member, Sedimentary and Geochemical Processes Panel of the Ocean Drilling Program 89-90, Member, Sediments and Ocean History Panel of the Ocean Drilling Program 87-88; Research Advisory Scientist; then adjunct Professor, Colorado School of Mines, 77-99 Thesis advisor or co-advisor for 15 Masters and Doctoral Students, Colorado School of Mines; Adjunct Associate Professor, then Adjunct Professor, University of North Carolina, Institute of Marine Sciences, 79-89; Co-General Chairman, of the Society of Economic Geology, 75th Anniversary Meeting, 95; Memberships: GSA (Fellow), Geochemical Society, AGU, AAAS, Research: ‘Landscape Geochemistry’; The geologic, hydrologic, geomorphic, climatic, and anthropogenic controls on the geochemistry of earth surface materials at local to regional scales. Economic Geology; origin of sediment hosted ore deposits.