Please Note: This is an archived website. It is recommended to search on-line for revised or newer information.
Link to USGS Home Page CGS home USGS home

Home

Find Geologic Maps

About SCAMP

Southern California Geology

Links and Resources

Site Contents

Contact Us

 

Oblique aerial photograph looking northeast

Oblique aerial photograph looking northeast toward the southeastern San Gabriel Mountains, with the communities of Claremont, Pomona, and Ontario in the foreground. The large Canyon left of center is San Antonio Canyon, with Mt. San Antonio (Mt. Baldy) the high summit at the left edge of the photo. East of San Antonio Canyon lie Cucamonga Canyon and Day Canyon. The abrupt south front of the San Gabriel Mountains here is marked by the Cucamonga Fault zone. Although the late Quaternary history of this zone is well known, longer-term fault movements presumably responsible for uplift of the southeastern San Gabriel Mountains are not well understood. Photo by D.M. Morton, USGS, January, 1976.

Return to Previous Page

blue line
Southern California Areal Mapping Project logo
SCAMP Home Page
USGS Geology, Minerals, Energy, and Geophysics
California Geological Survey
USGS Home || Search USGS

blue line

  U.S. Department of the Interior, U.S. Geological Survey
Maintainer: WESP team webmaster contact
Privacy Statement || Disclaimer || Accessibility
URL: http://geomaps.wr.usgs.gov/archive/scamp/html/jan76p8.html
This site last updated September 3, 2004 (ps)

First Gov