IGPP Seminar Series

Margins, Methane, and Microbes

by Prof. Chris House
Penn State

Abstract

The anaerobic oxidation of methane is an important process limiting marine methane emissions to the atmosphere. This biological process was, until recently, known only from pore water geochemistry. Now, through pore water geochemistry, molecular biology, and SIMS, various groups of ANMEs are known to mediate this process in methane seeps along margins. In contrast, similar research in deeply buried marine sediments from the Peru Margin suggest a distinct "dissimilatory" microbial pathway is mediating the anaerobic oxidation of methane. In deeply buried marine sediments, Crenarchaea appear to be the dominant active microbial group, especially in zones where the methane is consumed.
Tuesday, 17 October 2006
3845 Slichter Hall
Refreshments at 3:45 PM
Lecture at 4:00 PM