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

    Submarine Slide and Slump Complexes, Exmouth Plateau, NW Shelf of Australia

    Access Status
    Fulltext not available
    Authors
    Scarselli, N.
    McClay, K.
    Elders, Chris
    Date
    2013
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Scarselli, N. and McClay, K. and Elders, C. 2013. Submarine Slide and Slump Complexes, Exmouth Plateau, NW Shelf of Australia, in Keep, M. and Moss, S.J (ed), Western Australian Basins Symposium 2013, Aug 18-21 2013. Perth: Petroleum Exploration Society of Australia.
    Source Title
    The Sedimentary Basins of Western Australia IV
    Source Conference
    Western Australian Basins Symposium 2013
    URI
    http://hdl.handle.net/20.500.11937/17854
    Collection
    • Curtin Research Publications
    Abstract

    Analysis of 3D seismic data shows that the Neogene to near seabed section along the NW flank of the Exmouth Plateau Arch has been affected by numerous slope failures. Seabed collapses originated at water depths of ~1000 m and extend down dip to depths well in excess of 1500 m. A wide spectrum of slope failures have been identified, from coherent slides, incoherent slumps to mass flow deposits, the product of debris-flows and turbidity currents. The slides in the study area are characterized by proximal slide fault block systems that are expressed at the seafloor as extensional ridges up to 500 m wide and 1 km long. The up-dip extension is matched by down-dip toe thrusts. The downslope toe is characterized by imbricate thrusts with fault-related folds that form a prominent fold belt at the seabed. The over-thickened leading edge of the toe-thrust systems commonly has undergone gravitational collapse resulting in second-order toe slides detached at shallower stratigraphic levels. Slump systems are characterized by contorted seismic facies that rest on top of erosive basal shear surfaces that are typically strongly striated. These striations are commonly arranged in multiple crosscutting sets. Detailed analysis of the orientation and crosscutting relationships of these sets suggests a complex multi-stage evolution of slumps. Progressive down slope disaggregation at the leading edge of slumps promoted the development of mass flows. These are characterised by strongly erosive canyons that link slumps to down dip debris flow and turbidite fans. The results of this work broaden our knowledge of the distribution and characteristic of slope failure in the Exmouth Plateau and shows that multiple slope processes can develop and coexist within a single event and hence produce a final composite failure.

    Related items

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

    • Landslide Risk Analysis using a New Constitutive Relationship for Granular Flow
      Ren, Diandong; Leslie, L.; Karoly, D. (2008)
      In this study, landslide potential is investigated, using a new constitutive relationship for granular flow in a numerical model. Unique to this study is an original relationship between soil moisture and the inertial ...
    • Thermal History and Deep Overpressure Modelling in the Northern Carnarvon Basin, North West Shelf, Australia
      He, Sheng (2002)
      The Northern Carnarvon Basin is the richest petroleum province in Australia. About 50 gas/condensate and oil fields, associated mainly with Jurassic source rocks, have been discovered in the sub-basins and on the Rankin ...
    • The Mesozoic structural evolution of the Gorgon Platform, North Carnarvon Basin, Australia
      Yang, X.; Elders, Chris (2016)
      © 2016 Geological Society of Australia.The Gorgon Platform is located on the southeastern edge of the Exmouth Plateau in the North Carnarvon Basin, North West Shelf, Australia. A structural analysis using three-dimensional ...
    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.