• Meteoritics/Cosmochemistry 
Mineralogic and isotopic studies of pristine components in chondritic meteorites with implications for transport mechanisms and dynamic time scales in the early solar system.

  • Geochemistry/Planetology
Using radiogenic isotopes to investigate geochemical heterogeneity in the Earth's upper mantle with implications for large scale mantle evolution.

  • Biomineralization/Paleoenvironmental proxies
Using trace element and stable isotopic micro-distributions to study the level of biological control over the formation of carbonates by marine organisms.