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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