- Atmospheric evolution (terrestrial samples
and SNC/Martian meteorites)
- Atmospheric deposition (environmental
studies of nitrate and sulfate)
- Co-evolution of life and the surface
environment across critical transitions in the
history of Earth and Life
- Cosmochemistry (evolution of water early in
solar system)
- Determination of the changes in the isotopic
composition of the oceans through time
- Developing tools to investigate the
antiquity of biological processes
- Developing tools to investigate the flow of
sulfur through geological, biological, and
sedimentary systems
- Experimental studies of photochemical
mass-independent isotope effects
- Multiple sulfur isotopes as a tracer of
magma sources and surface sulfur in the
Bushveld Complex
- Paleoclimatic field reconstruction from
sparse observational networks of proxy
observations
- Paleoclimatology of ENSO via high resolution
light stable isotopic measurements in marine
and terrestrial archives
- Proxy system modeling: tree rings, coral
isotopes, wood isotopes, wood density
- Synthesis of marine conditions over the past
2000 years: The Ocean2K
Project
- Quantifying biogeochemical transformations
in watersheds
- Role of water in climate change processes on
interannual to centennial timescales
- Tracking sources of pollution using isotopic
tracers
- Tracking hydrologic sources and flowpaths in
watersheds
- Use of stable isotopes in long-term
ecological research
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