Chairman, Department of Geological Sciences, San Diego State University (1980-1988)
Vice Chair, Board of Trustees, San Diego Society of Natural History – Natural History Museum (1987-1990)
President-elect, President, Past President, Pacific Section SEPM (1988-1991)
Vice Chairman, Chairman, Geological Society of America, Cordilleran Section (1990-1992)
Chairman, Quality of Life Board, City of San Diego (member 1989-1995; Chairman 1993-1994)
A tri-editor of the newsletter and web page for Pacific Section SEPM (2000-(www.sci.sdsu.edu/pacsepm/index.htm)
Last modified: 04 February 2004
