- Asst/Assoc/Full Prof, Dept of Chem & Biochem and Large Lakes Observatory, Univ Minnesota Duluth
- Postdoc Royal Netherlands Institute for Sea Research
- MS/PhD in Geological Sciences, Northwestern University
- BS Geology, Denison University
Education & Training
Research Interests
Organic and Stable Isotope Biogeochemistry in Modern and Ancient Earth Systems:
(Paleo)climate and environmental change using biogeochemical proxies and proxy development; impacts of climate change on ecosystems; (paleo)limnology; microbial biogeochemistry & geobiology; astrobiology; sulfur isotope biogeochemistry, sedimentary sulfur cycling and organic sulfur formation; carbon cycling and carbon isotope fractionation; stable isotope systematics of C, H, O, N, S in natural systems; early diagenesis, especially related to organic matter remineralization; chemical limnology/oceanography; global biogeochemical cycles; black shales; redox geochemistry.