My interests encompass a wide range of natural and anthropogenic biogeochemical processes within the Earth’s system.  My research includes the formation of organic carbon, its subsequent transport in the environment and ultimate fate in the environment. I utilize my expertise in the development and application of organic geochemistry techniques to make high-quality measurements of the isotopic compositions (13C and 14C) of organic molecules that act as tracers of biological, geological and chemical processes in water, soil, rock and sediment.