Record Display for the EPA National Library Catalog


Main Title Supplement to Project Geology Report: Auburn Dam. Seismic Evaluation of Auburn Damsite. Volume 4: Analysis of Faulting in the Auburn Damsite.
Author Ostenaa, Dean A. ; Throner, Richard H. ;
CORP Author Bureau of Reclamation, Auburn, CA. Auburn-Folsom South Unit.
Year Published 1978
Stock Number PB-290 926
Additional Subjects Dams ; Geologic investigations ; Geological faults ; Seismic surveys ; Intrusive rocks ; Geological surveys ; California ; Auburn Dam ; Earthquake engineering ; Dikes(Geology) ; Slickensides ; Strike(Geology) ; Dip(Geology) ; Central Valley Project
Library Call Number Additional Info Location Last
NTIS  PB-290 926 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 90p
The report presents additional data and interpretations assembled by various consultants since publication of the Project Geology Report. A structural analysis of F-1 based on overall geometry and observed slicken-sides is presented and are used to estimate potential directions and magnitudes of net slip along the F-1 fault zone. Included as an appendix is a study by consultant Robert Compton titled 'Gouge and Associated Deformation Along Fault F-1, Auburn Damsite.' Some of the conclusions reached are: (1) Maximum net slip of a shear termed the Steeply Dipping shear is 13.4 feet. (2) Displacement of the Steeply Dipping shear is the sum of episodic movements. (3) Post Steeply Dipping shear movement along F-1 has a magnitude of between 2 and 12 feet. (4) Based on observed relationships, F-1 may have moved last about 120 million years before present. (5) Displacement on foliation structures producing similar styles of deformation due to different stresses separated by 110 million years. Six appended drawings and 5 included in the text which are color printed and/or oversize as well as 10 color xerox prints are not included in the report because they could not be microfilmed. These drawings are available from the U.S. Bureau of Reclamation, Denver.