Sedimentary signals of recent faulting along an old strand of the San Andreas Fault, USA.

ABSTRACT: Continental transform fault systems are fundamental features in plate tectonics. These complex systems often constitute multiple fault strands with variable spatio-temporal histories. Here, we re-evaluate the complex history of the San Andreas Fault along a restraining bend in southern California (USA). The Mission Creek strand of the San Andreas Fault is a major geologic structure with ~90 km of strike-slip displacement but is currently mapped as inactive. Quaternary deposits record sediment dispersal across the fault from upland catchments and yield key markers of the fault's displacement history. Our sediment provenance analysis from the Deformed Gravels of Whitewater and the Cabezon Fanglomerate provide detrital geochronologic and lithologic signatures of potential sources within the S

SUBMITTER: Fosdick JC 

PROVIDER: S-EPMC6092442 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature