Tectonic Inheritance With Dipping Faults and Deformation Fabric in the Brittle and Ductile Southern California Crust

Schulte‐Pelkum, Vera; Ross, Zachary E.; Mueller, Karl; Ben‐Zion, Yehuda

doi:10.1029/2020jb019525

i

Tectonic Inheritance With Dipping Faults and Deformation Fabric in the Brittle and Ductile Southern California Crust

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2020
By Schulte‐Pelkum, Vera ; Ross, Zachary E. ; Mueller, Karl ; ...

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Journal Title:

Journal of Geophysical Research: Solid Earth
Personal Author:

Schulte‐Pelkum, Vera ; Ross, Zachary E. ; Mueller, Karl ; Ben‐Zion, Yehuda
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:

Plate motions in Southern California have undergone a transition from compressional and extensional regimes to a dominantly strike ‐slip regime in the Miocene. Strike ‐slip motion is most easily accommodated on vertical faults, and major transform fault strands in the region are typically mapped as near vertical on the surface. However, some previous work suggests that these faults have a dipping geometry at depth. We analyze receiver function arrivals that vary harmonically with back azimuth at allavailable broadband stations in the region. The results show a dominant signal from contrasts in dipping foliation as well as dipping isotropic velocity contrasts from all crustal depths, including from the ductile middle to lower crust. We interpret these receiver function observations as a dipping fault ‐parallel structural
Keywords:

Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Geophysics Space And Planetary Science Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Space And Planetary Science Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Space And Planetary Science
Source:

Journal of Geophysical Research: Solid Earth, 125(8)
DOI:

https://doi.org/10.1029/2020jb019525
ISSN:

2169-9313 ; 2169-9356
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PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
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urn:sha-512:1dc43214c66edc146baaca3b67119f7e381dc8f5bf6ddcda5ed56de73eaba7750afcc6ed8b090fa2c7acad6f8a2969b681e2df50401ce6425a0e731100a18b4c
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