NCGS Honorary Members

The Society’s Board of Directors recognizes exceptional people among NCGS members by granting them Honorary status.

Dan Day

John Karachewski

John Karachewski has served a record 14 terms as Program Director and has also served as President and Counselor. Doris Sloan and John collaborated on the classic Geology of the San Francisco Bay Region, published in 2006. He has led many Bay Area geologic field trips for a local and national organization and has taught geology courses at Diablo Valley College. His geology-inspired photography has graced the pages of numerous publications, including Bay Nature and journals of the Geological Society of America, American Association of Petroleum Geologists and Groundwater Association of California. John is currently serving NCGS as Secretary.

Don Lewis

Don Lewis has been our unofficial NCGS Historian, with knowledge of the Society throughout its early years, and continues to document our history and participate in our activities. He has served NCGS as Program Director, President-Elect and President, and he advised us as a Counselor for 21 years. Don also has long been our active link to AAPG, keeping NCGS apprised of their activities, through his participation in the Pacific Section AAPG Advisory Council and his many years as Delegate to AAPG. He has received several honors from AAPG for his service, including Distinguished Member and Honorary Member.

Phil Reed

Phil Reed has served a record 13 terms as NCGS Treasurer, two terms as President-Elect, and one term as President. He also served eight years as Counselor and continues to provide valuable advice to the Society. Over the years, Phil has regularly volunteered and tirelessly represented NCGS at numerous community events and outreach activities.

Doris Sloan


Mel Erskine

The late Mel Erskine had a long career as a well-known Bay Area consulting geologist with interests including mining and petroleum exploration, using all the tools from satellite imagery to geology and geophysics. Author of many papers on the geology of the western U.S., Mel was active in the NCGS for over three decades. He was President in 1991-92 and a Counselor for many years.

Larry Funkhouser

The late Larry Funkhouser was named an Honorary Member in 1987, when he was president of the American Association of Petroleum Geologists. He retired that year from Standard Oil Company of California (Chevron) as Vice-president of Exploration and Production and a member of the Board of Directors. He was a geologist’s geologist and never tired of studying the geologic details of proposals despite his many business duties.

Ray Sullivan

The late Ray Sullivan, emeritus professor at San Francisco State University, was a widely acknowledged expert on the stratigraphy of Mount Diablo. He was the main driver and primary editor of the 2020 NCGS volume on Mount Diablo. He was an active NCGS member for decades and an officer for two decades beginning in 1993, including president in 1995 and a valued counselor afterward. He led many field trips for NCGS and numerous other groups.

Tom Wright