Cenozoic landscape and ice drainage evolution in the Lambert Glacier-Amery Ice Shelf system

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    Abstract

    Landforms and sediments in the Prince Charles Mountains record the timing and magnitude of Cenozoic palaeotopographic changes in the Lambert Glacier–Amery Ice Shelf system. A review of geomorphic and sedimentological evidence indicates that considerable (>1–2 km) glacial incision into a pre-glacial palaeosurface occurred along the major outlet glaciers during the Cenozoic. This erosion was in turn the likely driver for uplift that averaged c. 50 m/Ma along the flank of the Amery Ice Shelf since at least the mid-Miocene Epoch. The volume of eroded material is an order of magnitude greater than the quantity of sediment presently preserved in Prydz Bay, suggesting considerable export of Cenozoic sediment off the continental shelf. The magnitude of erosion recorded in the Prince Charles Mountains is sufficient to have focussed Cenozoic ice-drainage patterns, but was too slow to have driven Quaternary changes in ice volume.
    Original languageEnglish
    Pages (from-to)151-165
    Number of pages15
    JournalGeological Society Special Publication
    Volume381
    Issue number1
    DOIs
    Publication statusPublished - 2013

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    Glaciers
    ice shelf
    Drainage
    Ice
    glacier
    drainage
    ice
    Sediments
    Erosion
    sediment
    paleosurface
    Landforms
    erosion
    mountain
    landform
    continental shelf
    uplift
    Miocene

    Cite this

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    title = "Cenozoic landscape and ice drainage evolution in the Lambert Glacier-Amery Ice Shelf system",
    abstract = "Landforms and sediments in the Prince Charles Mountains record the timing and magnitude of Cenozoic palaeotopographic changes in the Lambert Glacier–Amery Ice Shelf system. A review of geomorphic and sedimentological evidence indicates that considerable (>1–2 km) glacial incision into a pre-glacial palaeosurface occurred along the major outlet glaciers during the Cenozoic. This erosion was in turn the likely driver for uplift that averaged c. 50 m/Ma along the flank of the Amery Ice Shelf since at least the mid-Miocene Epoch. The volume of eroded material is an order of magnitude greater than the quantity of sediment presently preserved in Prydz Bay, suggesting considerable export of Cenozoic sediment off the continental shelf. The magnitude of erosion recorded in the Prince Charles Mountains is sufficient to have focussed Cenozoic ice-drainage patterns, but was too slow to have driven Quaternary changes in ice volume.",
    author = "Duanne WHITE",
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    Cenozoic landscape and ice drainage evolution in the Lambert Glacier-Amery Ice Shelf system. / WHITE, Duanne.

    In: Geological Society Special Publication, Vol. 381, No. 1, 2013, p. 151-165.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Cenozoic landscape and ice drainage evolution in the Lambert Glacier-Amery Ice Shelf system

    AU - WHITE, Duanne

    PY - 2013

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    AB - Landforms and sediments in the Prince Charles Mountains record the timing and magnitude of Cenozoic palaeotopographic changes in the Lambert Glacier–Amery Ice Shelf system. A review of geomorphic and sedimentological evidence indicates that considerable (>1–2 km) glacial incision into a pre-glacial palaeosurface occurred along the major outlet glaciers during the Cenozoic. This erosion was in turn the likely driver for uplift that averaged c. 50 m/Ma along the flank of the Amery Ice Shelf since at least the mid-Miocene Epoch. The volume of eroded material is an order of magnitude greater than the quantity of sediment presently preserved in Prydz Bay, suggesting considerable export of Cenozoic sediment off the continental shelf. The magnitude of erosion recorded in the Prince Charles Mountains is sufficient to have focussed Cenozoic ice-drainage patterns, but was too slow to have driven Quaternary changes in ice volume.

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