Geobiology, Astrobiology, Paleoclimate, Paleoceanography (GAPP) Research Group Link

My group uses sedimentary and organic geochemistry to address modern and ancient biogeochemical problems.  We focus on the redox evolution of the Earth, specializing in biogeochemical cycling and developing new analytical techniques for stable isotope analyses on organic matter and biominerals. We focus on the stable isotopes of nitrogen, carbon, and sulfur, with a particular interest in compound-specific, stable isotope techniques.  My research interests span the spectrum of geologic time, ranging from modern hypoxic environments in the Gulf of Mexico, coastal Florida and Long Island Sound to paleoenvironmental problems in the Archean, Proterozoic, Devonian, and Cretaceous.