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My research uses analysis of sedimentary processes to reconstruct depositional environments at the map scale, outcrops, cores, and thin sections. The reconstructions are used to develop mapping strategies, climatic reconstructions, exploration of economic minerals or hydrocarbons, or to resolve problems such as pollution, erosion, or hazard analysis.
2013-present - Scientist Emeritus, U.S. Geological Survey, Eastern Geology and Paleoclimate Science Center, Reston VA
1995-2013 - Research Geologist, U.S. Geological Survey, Eastern Geology and Paleoclimate Science Center, Reston VA
1990-1995 - Research Geologist, U.S. Geological Survey, Sedimentary Processes Program, Denver CO
1983-1990 - Research Geologist, U.S. Geolgical Survey, Branch of Eastern Geology, Reston VA
1978-1983 - Assistant Professor, State University of New York, Stony Brook NY