Stream Channel Offset and Late Holocene Slip Rate of the San Andreas Fault at the Van Matre Ranch Site, Carrizo Plain, California

Tectonic geomorphology of the San Andreas Fault zone from high resolution topography: An example from the Cholame segment

“…The geometry and motions of the blocks that comprise the upper few km of the fault zone inform studies of rupture dynamics, fluid flow along fault zones, fault zone strength, and evolution of fault zone fabrics (e.g., Scholz, 1991). Using landforms as markers of the horizontal and vertical motions along and across the fault zone, coupled with Quaternary geochronology, provides a measure of the strain release rate at centennial to millennial time scales-a valuable bridge between geologic strain release rates at million year time scales and the geodetically measured strain accumulation rates at decadal time scales (e.g., Sieh and Jahns, 1984;Noriega et al, 2006). The meter scale geomorphology of the fault zone guides siting and interpretation of paleoseismic sites (e.g., McCalpin, 1996).…”

Three-Dimensional Investigation of a 5 m Deflected Swale along the San Andreas Fault in the Carrizo Plain

“…In contrast, many channels measured and reported by Zielke et al (2010) are moderately to deeply incised and are unlikely to be deflected. Zielke et al (2010) also measured channels at Bidart fan, Phelan fan, Wallace Creek, and Van Matre Ranch (Grant and Sieh, 1994;Liu-Zeng et al, 2006;Noriega et al, 2006;Grant Ludwig et al, 2010), which had previously been excavated and were unequivocally offset by faulting. The total number of measurements (> 40), including confirmed and unconfirmed tectonic offsets, is sufficient to conclude that the Zielke et al (2010) dataset is representative of tectonic slip, although we cannot rule out the possibility that one or more deflections were not recognized.…”

Spatio-Temporal Mapping of Plate Boundary Faults in California Using Geodetic Imaging

“…Earlier offsets and paleoruptures are evident as well [88,93,95]. The geodetic measure of strain accumulation [96] is within error of the millennial scale fault slip rate of~34 mm/year [88,97,98]. The record of faulting is of fundamental importance for testing models of earthquake physics and for constraining the significant earthquake hazard faced by southern California [1].…”

“…The record of faulting is of fundamental importance for testing models of earthquake physics and for constraining the significant earthquake hazard faced by southern California [1]. geodetic measure of strain accumulation [96] is within error of the millennial scale fault slip rate of ~34 mm/year [88,97,98]. The record of faulting is of fundamental importance for testing models of earthquake physics and for constraining the significant earthquake hazard faced by southern California [1].…”