1. Author info: Peter Kelemen is Arthur D. Storke Professor of Geochemistry at Columbia University, where he moved in 2004 after 17 years at the Woods Hole Oceanographic Institution. Hegraduated from Dartmouth College in 1980, and received hisMSc and PhD (1987) from the University of Washington in Seattle. Kelemen’sresearch focused for many years on chemical and physical processes duringreactive transport of magma in the Earth’s mantle and lower crust (“theplumbing system of volcanoes”), and how this affects the composition andstructure of oceanic, volcanic arc, and continental crust. In recent years, hehas also been studying the evolution of continental upper mantle, the role ofdensity instabilities on crustal evolution, the deeper parts of earthquakes, andreactive transport of low-temperature fluid through mantle peridotites. Inaddition to his research work, Kelemen was a founding partner of DihedralExploration, consultants specializing in “extreme terrain mineral exploration” inBC, Alaska, and Greenland from 1980-1992, and has taken part in severalmountaineering expeditions in Peru, India, and Pakistan.

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  2. Author info: John Valley is the Van Hise Professor of Geology at the University of Wisconsin–Madison, where he established theWiscSIMS Laboratory for Stable Isotope Geochemistry. His interests include the early Earth, astrobiology, mountain belts, and paleoclimatology.

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  3. Author info: James A. Davis is a Senior Research Geochemist/Engineer at the U. S. Geological Survey in Menlo Park, CA, directing field and laboratory research on chemical reactions at the mineral-water interface and the transport of metal contaminants and radionuclides in groundwater. His research has examined geochemical processes at multiple scales, from molecular-scale studies by X-ray absorption spectroscopy to large field-scale investigations. Other research interests include carbonate chemistry, permeable reactive barriers for groundwater remediation, spectroscopic characterization of amorphous mineral phases and contaminants at mineral surfaces, and the spatial variability of hydrologic and geochemical properties in aquifers.

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  4. Author info: Laurent Charlet is a Distinguished Professor, Universite Joseph Fourier Grenoble I in France, and an expert in contaminant geochemistry, particularly with respect to arsenic and selenium. Author of more than 120 publications, his research encompasses both molecular-scale modeling and field-scale descriptions of hydrogeology and contaminant availability. He has established research and education programs in Laos and Cambodia. He is also Editor-in-Chief of Hydrology, and manager of several French and EU research initiatives. In 2007, Laurent received the CNRS Silver Medal, one of France’s highest research honors.

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Distinguished Scientist Seminar Series

LBNL Earth Sciences Division Plus

The ESD Distinguished Scientist Series is a monthly seminar featuring eminent individuals from various disciplines in the scientific community whose research is outstanding, interdisciplinary, and of broad interest to strategic interest initiatives in the earth sciences. Speakers normally spend a full day with researchers at Earth Sciences Division, LBNL, and the University of California, Berkeley.

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