Office: 351 Arms Laboratory
California Institute of Technology
Pasadena, CA 91125
A.B., Harvard College, 1974; M.Phil., University of Edinburgh, 1976; Ph.D., Harvard University, 1979; D.Sc.h.c., University of Edinburgh; D.Phil.h.c., Hebrew University. Assistant Professor, Caltech, 1979-82; Associate Professor, 1982-83; Professor, 1983-90; Leonhard Professor, 1990-. Acting Executive Officer for Geochemistry, 1989; Executive Officer, 1989-94; Chair, Division of Geological and Planetary Sciences, 1994-2004; Acting Provost, 2004; Provost, 2007-.
Research interests center on studies of the origin and evolution of igneous rocks on the earth and other planets using experiment, theory, and field studies. Recent focuses include studies of Hawaii and other hot spot volcanoes, theory and modeling of the thermodynamics of mantle melting, oxygen isotopes as probes of mantle sources of magmas, the petrology of Martian meteorites, and the role of volatiles in island arc magmatism.