Ph.D., Washington State University, Pullman WA, Geology, 2000;

M.S., Washington State University, Pullman WA, Geology (Hydrogeology), 1992;

B.A., Colgate University, Hamilton NY, Geology, 1986.

Assistant Professor of Geology (2000-Present), Allegheny College, Meadville, PA

Teaching and Research Assistant (1996-2000), Department of Geology, Washington State University;

Research Scientist (1994-1995), Danish Geotechnical Institute;

Research Assistant (1993-1994), Environmental Science Division, Oak Ridge National Laboratory;

Teaching and Research Assistant (1990-1992), Department of Geology, Washington State University;

Hydrogeologist (1986-89), New Jersey Department of Environmental Protection.

Rachel O達rien has been working at the Hubbard Brook Experimental Forest since 1995. For her dissertation, she is working with Kent Keller (advisor) and Dan Strobridge (graduate student) to investigate the influence of plants on rock weathering in the Hubbard Brook Sandboxes. This research involves two years of continuous data collection in the field (completed June 1998) beneath four stands of vascular and non-vascular plants.

Editor痴 citation for excellence in manuscript review from the Journal of Environmental Quality, 1998.

Keller, C.K., R.M. Allen-King and R. O'Brien. 2000. A framework for integrating quantitative geologic problem solving into courses across the undergraduate geology curriculum. J. of Geosci. Educ., 48:459-463.

Berner, R. A., J. L. Rao, S. B. Chang, R. O達rien and C. K. Keller. 1998. Seasonal variability of adsorption and exchange equilibria in soil waters. Aquatic Geochemistry 4: 273-290.

Gwo, J. P., R. O達rien and P. M. Jardine. 1998. Mass transfer in structured porous media: Embedding mesoscale structure and microscale hydrodynamics in a two-region model. J. Hydrology 208(3/4):204-222.

Jardine, P. M., R. O達rien, G. V. Wilson and J. P. Gwo. 1998. Experimental techniques for confirming and quantifying physical nonequilibrium processes in soils. chapter 9 - pp. 243-271. In: Physical Nonequilibrium in Soils: Modeling and Application. Ann Arbor Press, Michigan.

O達rien, R. C., K. Keller and J. L. Smith. 1996. Multiple tracers of shallow groundwater flow and recharge in hilly loess. Ground Water 34(4):675-682.

Schooley, J. and R. O達rien. 1989. Prioritizing wells for wellhead protection area delineation: A GIS approach. New Jersey Geological Survey Tech. Memorandum (TM-74), 25 pp.

C. Kent Keller

Principal Investigator