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Photomosaics and logs of trenches on the San Andreas Fault at Arano Flat near Watsonville, California

Open-File Report 2003-450

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Abstract

We present photomosaics and logs of the walls of trenches excavated for a paleoseismic study at Arano Flat, one of two sites along the San Andreas fault in the Santa Cruz Mountains on the Kelley-Thompson Ranch. At this location, the fault consists of a narrow zone along the northeast side of a low ridge adjacent to a possible sag pond and extends about 60-70 meters across a broad alluvial flat. This site was a part of Rancho Salsipuedes beginning in 1834 and was purchased by the present owner’s family in 1851.

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 Arano Flat near Watsonville, California
Series title:
Open-File Report
Series number:
2003-450
Year Published:
2004
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Earthquake Science Center
Description:
3 Plates: 83.52 x 34.55 inches and smaller
Country:
United States
State:
California
City:
Watsonvilles
Other Geospatial:
Arano Flat;San Andreas Fault