Holocene slip rates along the Owens Valley Fault, California: Implicationsfor the recent evolution of the Eastern California Shear Zone

Citation
J. Lee et al., Holocene slip rates along the Owens Valley Fault, California: Implicationsfor the recent evolution of the Eastern California Shear Zone, GEOLOGY, 29(9), 2001, pp. 819-822
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Earth Sciences
Journal title
GEOLOGY
ISSN journal
0091-7613 → ACNP
Volume
29
Issue
9
Year of publication
2001
Pages
819 - 822
Database
ISI
SICI code
0091-7613(200109)29:9<819:HSRATO>2.0.ZU;2-I
Abstract
One of the largest historical earthquakes in California occurred in 1872 al ong the Owens Valley fault located along the western margin of the Eastern California Shear Zone. New paleoseismic and optically stimulated luminescen ce data are the first to bracket the timing of the pre-1872 rupture to betw een 3.3 +/- 0.3 and 3.8 +/- 0.3 ka. These data yield an earthquake recurren ce interval between 4100 and 3000 yr, under the assumption of uniform retur n, and indicate a Holocene slip rate between 1.8 +/- 0.3 and 3.6 +/- 0.2 mm /yr. Our data are broadly consistent with a model proposed for the space-ti me evolution of the Eastern California Shear Zone. Our Holocene slip-rate e stimates for the Owens Valley fault are slower than present-day slip rates determined from elastic half-space models of geodetic data. This discrepanc y is reduced by using the recurrence interval estimated here and a viscoela stic model of geodetic data or by including geologic slip rates from adjace nt faults.