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Project Progress

Ellen Herman (MS Student) has received some support from the Pennsylvania State Astrobiology Research Center (PSARC) to develop a numerical model of the microbial mat. The model is used to evaluate how microbial mats may have differed during Archean and Proterozoic times, when the overlying water may have been O₂ poor and/or sulfide rich. Her thesis is now completed and will be published soon.

I’ve collaborated with Bill Seyfried (U. Minn.) on the response of seafloor hydrothermal systems to depressurization during sea-level lowstands. That work is in review with Nature.

Roberta Hotinski (NSF), Michael Arthur (PSU) and I have concluded a study of the Paleoproterozoic biological pump in the Northwest Territories of Canada. The paper is in review in the Bulletin of the Geological Society of America.

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