The subglacial geology of Wilkes Land, East Antarctica

Alan Aitken, D.A. Young, F. Ferraccioli, P.G. Betts, J.S. Greenbaum, T.G. Richter, J.L. Roberts, D.D. Blankenship, M.J. Siegert

    Research output: Contribution to journalArticle

    57 Citations (Scopus)

    Abstract

    Wilkes Land is a key region for studying the configuration of Gondwana and for appreciating the role of tectonic boundary conditions on East Antarctic Ice Sheet (EAIS) behavior. Despite this importance, it remains one of the largest regions on Earth where we lack a basic knowledge of geology. New magnetic, gravity, and subglacial topography data allow the region's first comprehensive geological interpretation. We map lithospheric domains and their bounding faults, including the suture between Indo-Antarctica and Australo-Antarctica. Furthermore, we image subglacial sedimentary basins, including the Aurora and Knox Subglacial Basins and the previously unknown Sabrina Subglacial Basin. Commonality of structure in magnetic, gravity, and topography data suggest that pre-EAIS tectonic features are a primary control on subglacial topography the preservation of this relationship after glaciation suggests that these tectonic features provide topographic and basal boundary conditions that have strongly influenced the structure and evolution of the EAIS. Key Points Wilkes Land geology is comprehensively characterized for the first time New and known continent-scale faults and sedimentary basins are defined These major tectonic features define current subglacial topography © 2014. American Geophysical Union. All Rights Reserved.
    Original languageEnglish
    Pages (from-to)2390-2400
    JournalGeophysical Research Letters
    Volume41
    Issue number7
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    Antarctic regions
    geology
    tectonic feature
    tectonics
    topography
    ice sheet
    ice
    sedimentary basin
    boundary condition
    gravity
    boundary conditions
    gravitation
    commonality
    aurora
    continents
    basin
    Gondwana
    glaciation
    Antarctica
    land

    Cite this

    Aitken, A., Young, D. A., Ferraccioli, F., Betts, P. G., Greenbaum, J. S., Richter, T. G., ... Siegert, M. J. (2014). The subglacial geology of Wilkes Land, East Antarctica. Geophysical Research Letters, 41(7), 2390-2400. https://doi.org/10.1002/2014GL059405
    Aitken, Alan ; Young, D.A. ; Ferraccioli, F. ; Betts, P.G. ; Greenbaum, J.S. ; Richter, T.G. ; Roberts, J.L. ; Blankenship, D.D. ; Siegert, M.J. / The subglacial geology of Wilkes Land, East Antarctica. In: Geophysical Research Letters. 2014 ; Vol. 41, No. 7. pp. 2390-2400.
    @article{aca2e73edfed4edc934d6dbe410377c5,
    title = "The subglacial geology of Wilkes Land, East Antarctica",
    abstract = "Wilkes Land is a key region for studying the configuration of Gondwana and for appreciating the role of tectonic boundary conditions on East Antarctic Ice Sheet (EAIS) behavior. Despite this importance, it remains one of the largest regions on Earth where we lack a basic knowledge of geology. New magnetic, gravity, and subglacial topography data allow the region's first comprehensive geological interpretation. We map lithospheric domains and their bounding faults, including the suture between Indo-Antarctica and Australo-Antarctica. Furthermore, we image subglacial sedimentary basins, including the Aurora and Knox Subglacial Basins and the previously unknown Sabrina Subglacial Basin. Commonality of structure in magnetic, gravity, and topography data suggest that pre-EAIS tectonic features are a primary control on subglacial topography the preservation of this relationship after glaciation suggests that these tectonic features provide topographic and basal boundary conditions that have strongly influenced the structure and evolution of the EAIS. Key Points Wilkes Land geology is comprehensively characterized for the first time New and known continent-scale faults and sedimentary basins are defined These major tectonic features define current subglacial topography {\circledC} 2014. American Geophysical Union. All Rights Reserved.",
    author = "Alan Aitken and D.A. Young and F. Ferraccioli and P.G. Betts and J.S. Greenbaum and T.G. Richter and J.L. Roberts and D.D. Blankenship and M.J. Siegert",
    year = "2014",
    doi = "10.1002/2014GL059405",
    language = "English",
    volume = "41",
    pages = "2390--2400",
    journal = "Geophysical Research Letters",
    issn = "0094-8276",
    publisher = "American Geophysical Union",
    number = "7",

    }

    Aitken, A, Young, DA, Ferraccioli, F, Betts, PG, Greenbaum, JS, Richter, TG, Roberts, JL, Blankenship, DD & Siegert, MJ 2014, 'The subglacial geology of Wilkes Land, East Antarctica' Geophysical Research Letters, vol. 41, no. 7, pp. 2390-2400. https://doi.org/10.1002/2014GL059405

    The subglacial geology of Wilkes Land, East Antarctica. / Aitken, Alan; Young, D.A.; Ferraccioli, F.; Betts, P.G.; Greenbaum, J.S.; Richter, T.G.; Roberts, J.L.; Blankenship, D.D.; Siegert, M.J.

    In: Geophysical Research Letters, Vol. 41, No. 7, 2014, p. 2390-2400.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - The subglacial geology of Wilkes Land, East Antarctica

    AU - Aitken, Alan

    AU - Young, D.A.

    AU - Ferraccioli, F.

    AU - Betts, P.G.

    AU - Greenbaum, J.S.

    AU - Richter, T.G.

    AU - Roberts, J.L.

    AU - Blankenship, D.D.

    AU - Siegert, M.J.

    PY - 2014

    Y1 - 2014

    N2 - Wilkes Land is a key region for studying the configuration of Gondwana and for appreciating the role of tectonic boundary conditions on East Antarctic Ice Sheet (EAIS) behavior. Despite this importance, it remains one of the largest regions on Earth where we lack a basic knowledge of geology. New magnetic, gravity, and subglacial topography data allow the region's first comprehensive geological interpretation. We map lithospheric domains and their bounding faults, including the suture between Indo-Antarctica and Australo-Antarctica. Furthermore, we image subglacial sedimentary basins, including the Aurora and Knox Subglacial Basins and the previously unknown Sabrina Subglacial Basin. Commonality of structure in magnetic, gravity, and topography data suggest that pre-EAIS tectonic features are a primary control on subglacial topography the preservation of this relationship after glaciation suggests that these tectonic features provide topographic and basal boundary conditions that have strongly influenced the structure and evolution of the EAIS. Key Points Wilkes Land geology is comprehensively characterized for the first time New and known continent-scale faults and sedimentary basins are defined These major tectonic features define current subglacial topography © 2014. American Geophysical Union. All Rights Reserved.

    AB - Wilkes Land is a key region for studying the configuration of Gondwana and for appreciating the role of tectonic boundary conditions on East Antarctic Ice Sheet (EAIS) behavior. Despite this importance, it remains one of the largest regions on Earth where we lack a basic knowledge of geology. New magnetic, gravity, and subglacial topography data allow the region's first comprehensive geological interpretation. We map lithospheric domains and their bounding faults, including the suture between Indo-Antarctica and Australo-Antarctica. Furthermore, we image subglacial sedimentary basins, including the Aurora and Knox Subglacial Basins and the previously unknown Sabrina Subglacial Basin. Commonality of structure in magnetic, gravity, and topography data suggest that pre-EAIS tectonic features are a primary control on subglacial topography the preservation of this relationship after glaciation suggests that these tectonic features provide topographic and basal boundary conditions that have strongly influenced the structure and evolution of the EAIS. Key Points Wilkes Land geology is comprehensively characterized for the first time New and known continent-scale faults and sedimentary basins are defined These major tectonic features define current subglacial topography © 2014. American Geophysical Union. All Rights Reserved.

    U2 - 10.1002/2014GL059405

    DO - 10.1002/2014GL059405

    M3 - Article

    VL - 41

    SP - 2390

    EP - 2400

    JO - Geophysical Research Letters

    JF - Geophysical Research Letters

    SN - 0094-8276

    IS - 7

    ER -

    Aitken A, Young DA, Ferraccioli F, Betts PG, Greenbaum JS, Richter TG et al. The subglacial geology of Wilkes Land, East Antarctica. Geophysical Research Letters. 2014;41(7):2390-2400. https://doi.org/10.1002/2014GL059405