I am a geochemist whose research focuses on understanding fluid-rock interactions from the pore to global scales. I primarily use variations in trace elements and isotopic ratios to infer processes such as dissolution-precipitation reactions and mixing between distinct reservoirs. My prior research includes source components and origin of arc magmas, determining fracture attributes in hydrothermal systems from strontium and oxygen isotopes, and uranium mobility across redox gradients.
Additionally I am interested in fundamental chemical reactions that lead to mineral precipitation and dissolution. In the past 10 to 15 years unpredicted observations of metal isotope variation in fluid-mineral systems has caused us to reconsider our understanding of mineral growth and dissolution models. These reactions have implications for resource extraction and environmental remediation among many other areas of the physical sciences.
Currently I have active projects including: calcium Isotope composition of altered ocean crust, radon as a tracer of fracture properties in hydrothermal systems, uranium isotopic fingerprints of reduction in sedimentary systems and calcium isotope fractionation in the CaSO4-NaCl-H2O system at elevated temperatures. I am also interested in reactive transport in the Earth’s mantle and how it affects interpretation of mantle reservoir signatures.