This Open file report was written as part of a two-day field trip on
June 7 and 8, 2003, conducted for the Northern California Geological
Society. The first day of this field trip (June 7) was led by McLaughlin and
Sarna-Wojcicki in the area of the right- step between the Rodgers Creek-
Healdsburg fault zone and the Maacama fault. The second day of the trip
(June 8), was led by David Wagner of the California Geological Survey and
students having recently completed MS theses at San Jose State University
(James Allen) and San Francisco State University (Carrie Randolph-Loar),
as well as a student from San Francisco State University whose MS thesis
was in progress in June 2003 (Eric Ford). The second day covered the
Rodgers Creek fault zone and related faults of the Petaluma Valley area (the
Tolay and Petaluma Valley fault zones).
