Metabolic fractionation of stable isotopes

Some of the largest stable isotope signals are generated by metabolic activity. We develop and explore isotopically enabled, enzyme-level metabolic network models to understand metabolic fractionation of stable isotopes.

The consequences of diagenesis

Primary geochemical and isotopic signals are modified by a suite of physical, chemical and biological processes, collectively termed diagenesis, which we study in lab experiments and modern environments.

Rusty records of climate and hydrology

The oxygen isotope composition of iron oxide minerals (basically, rust) in sedimentary rocks provide unique constraints on the temperature and source of the waters in which they formed.