Geologic Map of the Monterey and Seaside 7.5-minute Quadrangles, Monterey County, California: A Digital Database

This Open-File report is a digital geologic map database stored in a
computer in the U. S. Geological Survey offices in Menlo Park,
California. The study area includes the Monterey Peninsula and part
of the Carmel Valley area. Geologically, this region is situated
within the complexly deformed Salinian block between the active San
Andreas fault to the northeast and the San Gregorio fault zone to
the southwest. It also is characterized by compressional tectonics
related to the San Andreas fault system and includes many poorly
understood subsidiary faults (Greene and others, 1988). A series
of high-angle faults trends northwestward across the quadrangles.
Most of the faults in the area are discontinuous, with some less
than 1 km long; however, the Tularcitos fault zone continues across
the entire mapped area. These faults displace the Monterey
Formation and locally offset Quaternary deposits.