Steady Long‐Term Slip Rate on the Blue Cut Fault: Implications for Strain Transfer Between the San Andreas Fault and Eastern California Shear Zone

Details

• Journal Title:
  Geophysical Research Letters
• Personal Author:
  Guns, K. A. ; Bennett, R. ; Blisniuk, K. ; Walker, A. ; Hidy, A. ; Heimsath, A.
• NOAA Program & Office:
  NOS (National Ocean Service) ; NGS (Office of National Geodetic Survey)
• Description:
  The Eastern Transverse Ranges (ETR) province of California contains a system of E-W-trending left-lateral faults accommodating clockwise block rotation between the San Andreas Fault (SAF) system in the Coachella Valley and the Eastern California Shear Zone (ECSZ) in the Mojave Desert. Building upon established geometric relationships, we estimate that this rotation across the ETR may transfer right-lateral strain from the SAF to the ECSZ at a time-averaged rate of ∼4.3–7.7 mm/yr. Through geomorphic mapping and the analysis of 38 10Be surface exposure samples, we derive a long-term slip rate of 1.26 ± 0.50 (2σ) mm/yr over the late Pleistocene, yet analysis of the displacement record indicates a rate decrease ∼71 kya. While a rate
• Keywords:
  General Earth And Planetary Sciences Geophysics General Earth And Planetary Sciences General Earth And Planetary Sciences
• Source:
  Geophysical Research Letters, 49(20)
• DOI:
  https://doi.org/10.1029/2022gl100799
• ISSN:
  0094-8276 ; 1944-8007
• Format:
  PDF
• Publisher:
  American Geophysical Union (AGU)
• Document Type:
  Journal Article
• Rights Information:
  Other
• Compliance:
  Library
• Main Document Checksum:
  urn:sha256:f37f24b9b6b49b0640eaaf06ec14fe91c9330fac0e54049fe542160dd8adae53
• Download URL:
  https://repository.library.noaa.gov/view/noaa/53307/noaa_53307_DS1.pdf
• File Type:
  [PDF - 3.99 MB ]