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Photomosaics and logs of trenches on the San Andreas Fault at Mill Canyon near Watsonville, California

Open-File Report 2003-469

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Abstract

We present photomosaics and logs of the walls of trenches excavated for a paleoseismic study at Mill Canyon, one of two sites along the San Andreas fault in the Santa Cruz Mtns. on the Kelley-Thompson Ranch. This site was a part of Rancho Salsipuedes begining in 1834. It was purchased by the present owner’s family in 1851. Remnants of a cabin/mill operations still exist up the canyon dating from 1908 when the area was logged. At this location, faulting has moved a shutter ridge across the mouth of Mill Canyon ponding Holocene sediment. Recent faulting is confined to a narrow zone near the break in slope.

Geospatial Extents

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Photomosaics and logs of trenches on the San Andreas Fault at Mill Canyon near Watsonville, California
Series title:
Open-File Report
Series number:
2003-469
Year Published:
2004
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Geology, Minerals, Energy and Geophysics Science Center
Description:
1 Plate: 67.65 x 35.18 inches
Country:
United States
State:
California
City:
Watsonville
Other Geospatial:
Mill Canyon;San Andreas Fault