Division of Geological and Planetary Sciences (GPS)
B.S., University of Arizona, 1982; Ph.D., Australian National University, 1987. Associate Professor, Caltech, 1994-96; Professor, 1996-2005. Smits Professor, 2005-. Associate Director, Seismological Laboratory, 1995-2003; Director, 2009-24; Director, Schmidt Academy, 2019-26; Allen Leadership Chair, 2023-24.