Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Present-day stresses in Brunei, NWBorneo: superposition of deltaic and active margin tectonics

    Access Status
    Fulltext not available
    Authors
    King, R.
    Hillis, R.
    Tingay, Mark
    Damit, A.
    Date
    2009
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    King, Rosalind and Hillis, Richard and Tingay, Mark and Damit, Abdul. 2009. Present-day stresses in Brunei, NWBorneo: superposition of deltaic and active margin tectonics. Basin Research.
    Source Title
    Basin Research
    DOI
    10.1111/j.1365-2117.2009.00407.x
    ISSN
    0950091X
    Faculty
    Department of Applied Geology
    Faculty of Science and Engineering
    The Western Australian School of Mines
    Remarks

    Copyright © 2009 John Wiley & Sons, Inc. All Rights Reserved.

    URI
    http://hdl.handle.net/20.500.11937/47906
    Collection
    • Curtin Research Publications
    Abstract

    The Baram Delta System, Brunei, NW Borneo, is a Tertiary delta system located on an active continental margin. Delta top regions in many Tertiary delta systems (e.g. Niger Delta) are thought to exhibit a normal-fault stress regime and margin-parallel maximum horizontal stress orientations. However, unlike in passive margin Tertiary delta systems, two present-day stress provinces have been previously identified across the Baram Delta System: an inner shelf inverted province with a margin-normal (NW-SE) maximum horizontal stress orientation and an outer shelf extension province with a margin-parallel (NE-SW) maximum horizontal stress orientation. Before this study, there were few data constraining the inverted province other than in the vicinity of the Champion Fields. New data from 12 petroleum wells in the western inner shelf and onshore west Brunei presented herein confirm the margin-normal maximum horizontal stress orientations of the inverted province. A total of 117 borehole breakouts, all documented in shale units, and one drilling-induced tensile fracture (in a sandstone interval) reveal a mean maximum horizontal stress orientation of 117 with a standard deviation of 19°. This orientation is consistent with contemporary margin-normal maximum horizontal stress orientations of the inverted province described previously in the vicinity of the Champion Fields that have been linked to basement tectonics of the Crocker-Rajang accretionary complex and associated active margin. However, stress magnitudes calculated using data from these 12 petroleum wells indicate a borderline strik-slip fault to normal fault stress regime for the present day; combined with the absence of seismicity, this suggests that the studied part of the NW Borneo continental margin is currently tectonically quiescent.

    Related items

    Showing items related by title, author, creator and subject.

    • 'Prograding' tectonics in Brunei: Regional implications for fault sealing.
      Tingay, Mark; Hillis, R.; Morley, C.; Swarbrick, R.; Drake, S. (2005)
      The Baram Delta province of Brunei (northwest Borneo) is unusual when compared with most other Tertiary deltas, as it has built up upon an active margin. Hence, the structures observed in Brunei are the result of both ...
    • Present-day stress orientation in Brunei: a snapshot of 'prograding tectonics' in a Tertiary delta
      Tingay, Mark; Hills, R.; Morley, C.; Swarbrick, R.; Drake, S. (2005)
      The Baram Delta province of NW Borneo is unusual when compared with most other Tertiary deltas, as it has built up upon an active margin. Hence, structures observed in the Baram Delta province are the result of both ...
    • Stress deflections around salt diapirs in the gulf of mexico
      King, R.; Backé, G.; Tingay, Mark; Hillis, R.; Mildren, S. (2012)
      Delta-deepwater fold-thrust belts are linked systems of extension and compression. Margin-parallel maximum horizontal stresses (extension) on the delta top are generated by gravitational collapse of accumulating sediment, ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.