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Slip on 'weak' faults by the rotation of regional stress in the fracture damage zone

Author

Listed:
  • D. R. Faulkner

    (University of Liverpool)

  • T. M. Mitchell

    (University of Liverpool)

  • D. Healy

    (University of Liverpool
    University of Durham)

  • M. J. Heap

    (University of Liverpool
    University College London)

Abstract

Rotation at faults An early finding of the San Andreas Fault Observatory at Depth (SAFOD) project, currently drilling an inclined borehole across the San Andreas Fault Zone to a 4-km depth, is that stress is rotated in the vicinity of the fault zone. Why this should occur here and at other similar 'weak' faults is not yet clear. A new model to help explain the phenomenon has been developed, based on field structure data of a large fault zone, lab measurements of rock elasticity, and numerical modelling. The model suggests that stress is re-oriented around faults by the change in rock elasticity resulting from microscale damage produced by the fault.

Suggested Citation

  • D. R. Faulkner & T. M. Mitchell & D. Healy & M. J. Heap, 2006. "Slip on 'weak' faults by the rotation of regional stress in the fracture damage zone," Nature, Nature, vol. 444(7121), pages 922-925, December.
  • Handle: RePEc:nat:nature:v:444:y:2006:i:7121:d:10.1038_nature05353
    DOI: 10.1038/nature05353
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    Cited by:

    1. Agust Gudmundsson, 2022. "Transport of Geothermal Fluids along Dikes and Fault Zones," Energies, MDPI, vol. 15(19), pages 1-36, September.
    2. Lingbin Meng & Jing Zheng & Ruizhao Yang & Suping Peng & Yuan Sun & Jingyu Xie & Dewei Li, 2023. "Microseismic Monitoring Technology Developments and Prospects in CCUS Injection Engineering," Energies, MDPI, vol. 16(7), pages 1-21, March.
    3. Torben Treffeisen & Andreas Henk, 2020. "Elastic and Frictional Properties of Fault Zones in Reservoir-Scale Hydro-Mechanical Models—A Sensitivity Study," Energies, MDPI, vol. 13(18), pages 1-28, September.

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