Susan L. Brantley

Contact Information:
Earth and Environmental Systems Institute
The Pennsylvania State University
2217 Earth & Engineering Sciences Building, 225B
University Park, PA 16802
Phone: 814-865-1619
Fax: 814-865-3191
Institute website:
Dept. website:


Chemical and physical processes associated with the circulation of aqueous fluids in shallow hydrogeologic settings. Investigations incorporate field and laboratory work, and theoretical modelling of observations. Of particular interest are questions concerning the measurement and prediction of the rates of natural processes, including chemical weathering and natural degassing. Recent work has focused on the effect of microbial life on mineral reactivity.

  • Aqueous Geochemistry
  • Geochemical Kinetics
  • Microbial Biogeochemist
  • Fe release and isotope fractionation during microbial alteration of silicate and oxide minerals
  • Extraction of Mo from silicate glass by a soil bacterium (Azotobacter vinelandii)
  • Cu isotope fractionation during microbially enhanced mineral dissolution and precipitation
  • Measurement of weathering rinds on basalt from Norway and Costa Rica
  • Rates and mechanisms of spheroidal weathering
  • Reactive transport modelling of weathering


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