Education:
1992 Ph.D. Oceanography, Oregon State University1986 B.Sc. Chemistry (Distinction), Stockton State College
Academic Positions:
2007 - present Professor, Oregon State University
2004 - 2007 Associate Professor, Oregon State University
2002 -2004 Assistant Professor, Oregon State University
1998-2002 Assistant Professor, University of Minnesota Duluth
1998-2002 Assistant Professor (Courtesy), Oregon State University
1996 - 1998 Assistant Professor (Sr. Res.), Oregon State University
1994 - 1996 Research Associate (Post Doctoral), Oregon State University
1993 - 1993 Adjunct Faculty: El Camino Community College
1992 - 1994 Postdoctoral Research Associate: University of Southern California
Research Interests:
My research focuses on a number of broad issues related to the Earth's biogeochemical evolution. This research includes specific studies on past climate and geochemical cycles, modern geochemical processes, and how anthropogenic perturbations might influence biogeochemical cycles in the future. My research includes examining elemental cycling in the ocean, estuaries, rivers, and lakes.
Current Research:
- Signatures of the ocean's carbon cycle: Uranium, molybdenum, cadmium, and vanadium geochemistry in marine sediments.
- Carbon, phosphorus, and trace metal cycling in Lake Malawi, east Africa: Developing chemical tools for understanding African climate history.
- Millennial-scale variations in intermediate water masses of the South Pacific based on paleoflux, paleoredox, and watermass age tracers.
- Molybdenum stable isotope geochemistry in marine sediments.
- Germanium stable isotope fractionation during high and low temperature weathering.
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