Seismotectonic regionalization of the Great Basin, and comparison of moment rates computed from Holocene strain and historic seismicity: Summary

Abstract

Research Article| September 01, 1980 Seismotectonic regionalization of the Great Basin, and comparison of moment rates computed from Holocene strain and historic seismicity: Summary ROGER W. GREENSFELDER; ROGER W. GREENSFELDER 1Department of Geophysics, Stanford University, Stanford, California 94305 Search for other works by this author on: GSW Google Scholar FREDERICK C. KINTZER; FREDERICK C. KINTZER 2URS/John A. Blume & Associates, Engineers, 130 Jessie Street, San Francisco, California 94105 Search for other works by this author on: GSW Google Scholar MALCOLM R. SOMERVILLE MALCOLM R. SOMERVILLE 3Seismological Laboratory, Mackay School of Mines, University of Nevada, Reno, Nevada 89557 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1980) 91 (9): 518–523. https://doi.org/10.1130/0016-7606(1980)91<518:SROTGB>2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation ROGER W. GREENSFELDER, FREDERICK C. KINTZER, MALCOLM R. SOMERVILLE; Seismotectonic regionalization of the Great Basin, and comparison of moment rates computed from Holocene strain and historic seismicity: Summary. GSA Bulletin 1980;; 91 (9): 518–523. doi: https://doi.org/10.1130/0016-7606(1980)91<518:SROTGB>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract A seismotectonic regionalization of the Great Basin and adjacent parts of the Basin and Range Province, forming six zones, is developed on the basis of generalized late Cenozoic patterns of deformation, relative Holocene strain rates, and historic seismicity. Belts of strike-slip movement are found to be significant in that they separate zones of differing strain rate, style of deformation, and historic seismicity. Within these zones, however, the distribution of historic seismicity may not represent that of Holocene or Quaternary time. Moment rates are computed from both Holocene strain rates and magnitude-frequency parameters of historic seismicity for each of the zones. Although the correlation of these moment rates is quite good, the average (geometric) ratio of Holocene to historic moment rates may be about a factor of two. If Holocene aseismic strain release is insignificant, then we might conclude that seismicity in Holocene time is approximately double that of historic time, averaged over the entire Great Basin. Alternatively, it is possible that Holocene strain has been generally overestimated or that much of it has been aseismic. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.