People Who Contributed to this Project

Leslie B. Magoon
Geologist
U.S. Geological Survey
Menlo Park, California

Susan F. Hodgson
Writer and Historian
California Dep't of Conservation
Sacramento, California

Thomas D. Lorenson
Organic Geochemist
U.S. Geological Survey
Menlo Park, California

Richard G. Stanley
Geologist
U.S. Geological Survey
Menlo Park, California

Paul G. Lillis
Petroleum Geochemist
U.S. Geological Survey
Lakewood, Colorado

Lee Davisson
Organic Geochemist
Lawrence Livermore National Laboratories
Livermore, California

Robert J. McLaughlin
Geologist
U.S. Geological Survey
Menlo Park, California

Michael B. Underwood
Geology Professor
University of Missouri
Columbia, Missouri

At Work in the Field

Les Magoon samples some Cretaceous limestone that may be the source of oil found in the New Almaden Mine area, near San Jose, California.

Tom Lorenson collects a gas sample from the Vichy Spring seep in northern California.

Paul Lillis captures some oil from a well in the Petrolia Field, the first oil field discovered in California.

Not pictured:

• Florence Wong, Geologist, Geographic Information Specialist, U.S. Geological Survey, Menlo Park, California
• Zenon Valin, Geographic Information Specialist, U.S. Geological Survey, Menlo Park, California
• Frances Cole, Geologist and Science Writer, formerly at U.S. Geological Survey, Menlo Park, California
• Laura Zink Torresan, IT Specialist, Web Site Design and Maintenance, U.S. Geological Survey, Santa Cruz, California