1855 and 1991 Surveys of the San Andreas Fault: Implications for Fault Mechanics
Two monuments from an 1855 cadastral survey that span the San Andreas fault in the Carrizo Plain have been right-laterally displaced 11.0 ± 2.5 m by the 1857 Fort Tejon earthquake and associated seismicity and afterslip. This measurement confirms that at least 9.5 ± 0.5 m of slip occurred along the main fault trace, as suggested by measurements of offset channels near Wallace Creek.
Grant, L.B. and Donnellan, A., 1994, 1855 and 1991 surveys of the San Andreas Fault; implications for fault mechanics: Bulletin of the Seismological Society of America, v. 84, p. 241-246.
The Forest Service will host its remaining two public meetings in Queen Valley on October 8 and in Tempe on October 10.
Video & Materials
A video presentation – the same information introduced at each public meeting – as well as meeting materials (posters and newsletter) are available for public review.
Draft EIS Released
The Draft Environmental Impact Statement (DEIS) for the Resolution Copper Project and Land Exchange is now available for review under the 'EIS Info' tab.
Comment on DEIS
Optional ways to comment on the Draft EIS are located under the 'EIS Info' and the 'Public Involvement' tabs.