Ph.D. University of California, Santa Barbara, 1979 (Geology).

Dissertation title: Stratigraphic, structural and paleogeographic interpretation of upper Proterozoic glaciogenic rocks in the Sevier orogenic belt, northwestern Utah. 633 p. Advisor: John C. Crowell.

B.A. University of Cambridge (King's College), UK, 1974

        (Natural Sciences/Geology). M.A. awarded, 1978.





Department of Earth and Environmental Sciences (DEES), Columbia University

[Assistant Professor, 1983-1987. Associate Professor, 1987-1993. Promotion to tenure, 1989. Professor, 1993 to present. Associate Chair, 2002-2004. Chair, and Deputy Director, Lamont-Doherty Earth Observatory, 2004-2006.]

Senior Research Geologist

Exxon Production Research Company, 1981-1983.

(Now ExxonMobil Upstream Research Company)

[Research Geologist, 1980-1981.]

Postdoctoral Assistant Research Geologist

University of California, Santa Barbara, 1979-1980.