BS Earth and Planetary Science 1978 MIT
BS Electrical Engineering 1978 MIT
MS Geoscience University of Arizona 1983
PhD Geological Sciences, University of California, Santa Barbara, 1988
Post-Doctoral Researcher, Institute for Crustal Studies, U.C. Santa Barbara, 1988-1992
Arizona Geological Survey 1992-2016
Interdisciplinary Earth Data Alliance, Lamont-Doherty Earth Observatory, Columbia University 2016-2018
US Geoscience Information Network Foundation 2014-present
Resides in Tucson, Arizona