The longevity of hillslope soil in SE and NW Australia

Keith Fifield, Robert Wasson, Brad Pillans, John Stone

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    The cosmogenic nuclide 10Be that is produced in the atmosphere and falls out in rainfall ('garden-variety' 10Be) is used at a site in SE Australia and one in NW Australia to estimate soil formation rates and natural erosion rates. Soil formation rates of 1-7 m/Ma are found at the SE Australian site, while higher rates of 10-27 m/Ma are found in NW Australia. These are compared with estimates of modern erosion rates based on surveys of sedimentation in farm dams or 137Cs in hillslope soils. In both cases, modern erosion rates are markedly higher than either soil formation rates or natural erosion rates measured here. At the NW Australian site, the 10Be data are complemented by measurements of in situ36Cl in nearby limestone cuesta surfaces. These show that the hard-rock surfaces are eroding more slowly than the soils, and that relief is therefore increasing in this landscape. This contribution to a small but growing body of studies of the likely longevity of hillslope soils in Australia shows that 'garden-variety' 10Be can be a very useful tracer, but only if its transport both within the solum and saprolite is taken in account. � 2010 Elsevier B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)32-42
    Number of pages11
    JournalCatena
    Volume81
    Publication statusPublished - 2010

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    erosion rate
    hillslope
    garden
    soil
    saprolite
    hard rock
    relief
    dam
    tracer
    limestone
    farm
    sedimentation
    rainfall
    rate
    atmosphere
    soil formation

    Cite this

    Fifield, K., Wasson, R., Pillans, B., & Stone, J. (2010). The longevity of hillslope soil in SE and NW Australia. Catena, 81, 32-42.
    Fifield, Keith ; Wasson, Robert ; Pillans, Brad ; Stone, John. / The longevity of hillslope soil in SE and NW Australia. In: Catena. 2010 ; Vol. 81. pp. 32-42.
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    title = "The longevity of hillslope soil in SE and NW Australia",
    abstract = "The cosmogenic nuclide 10Be that is produced in the atmosphere and falls out in rainfall ('garden-variety' 10Be) is used at a site in SE Australia and one in NW Australia to estimate soil formation rates and natural erosion rates. Soil formation rates of 1-7 m/Ma are found at the SE Australian site, while higher rates of 10-27 m/Ma are found in NW Australia. These are compared with estimates of modern erosion rates based on surveys of sedimentation in farm dams or 137Cs in hillslope soils. In both cases, modern erosion rates are markedly higher than either soil formation rates or natural erosion rates measured here. At the NW Australian site, the 10Be data are complemented by measurements of in situ36Cl in nearby limestone cuesta surfaces. These show that the hard-rock surfaces are eroding more slowly than the soils, and that relief is therefore increasing in this landscape. This contribution to a small but growing body of studies of the likely longevity of hillslope soils in Australia shows that 'garden-variety' 10Be can be a very useful tracer, but only if its transport both within the solum and saprolite is taken in account. � 2010 Elsevier B.V. All rights reserved.",
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    language = "English",
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    Fifield, K, Wasson, R, Pillans, B & Stone, J 2010, 'The longevity of hillslope soil in SE and NW Australia', Catena, vol. 81, pp. 32-42.

    The longevity of hillslope soil in SE and NW Australia. / Fifield, Keith; Wasson, Robert; Pillans, Brad; Stone, John.

    In: Catena, Vol. 81, 2010, p. 32-42.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - The longevity of hillslope soil in SE and NW Australia

    AU - Fifield, Keith

    AU - Wasson, Robert

    AU - Pillans, Brad

    AU - Stone, John

    PY - 2010

    Y1 - 2010

    N2 - The cosmogenic nuclide 10Be that is produced in the atmosphere and falls out in rainfall ('garden-variety' 10Be) is used at a site in SE Australia and one in NW Australia to estimate soil formation rates and natural erosion rates. Soil formation rates of 1-7 m/Ma are found at the SE Australian site, while higher rates of 10-27 m/Ma are found in NW Australia. These are compared with estimates of modern erosion rates based on surveys of sedimentation in farm dams or 137Cs in hillslope soils. In both cases, modern erosion rates are markedly higher than either soil formation rates or natural erosion rates measured here. At the NW Australian site, the 10Be data are complemented by measurements of in situ36Cl in nearby limestone cuesta surfaces. These show that the hard-rock surfaces are eroding more slowly than the soils, and that relief is therefore increasing in this landscape. This contribution to a small but growing body of studies of the likely longevity of hillslope soils in Australia shows that 'garden-variety' 10Be can be a very useful tracer, but only if its transport both within the solum and saprolite is taken in account. � 2010 Elsevier B.V. All rights reserved.

    AB - The cosmogenic nuclide 10Be that is produced in the atmosphere and falls out in rainfall ('garden-variety' 10Be) is used at a site in SE Australia and one in NW Australia to estimate soil formation rates and natural erosion rates. Soil formation rates of 1-7 m/Ma are found at the SE Australian site, while higher rates of 10-27 m/Ma are found in NW Australia. These are compared with estimates of modern erosion rates based on surveys of sedimentation in farm dams or 137Cs in hillslope soils. In both cases, modern erosion rates are markedly higher than either soil formation rates or natural erosion rates measured here. At the NW Australian site, the 10Be data are complemented by measurements of in situ36Cl in nearby limestone cuesta surfaces. These show that the hard-rock surfaces are eroding more slowly than the soils, and that relief is therefore increasing in this landscape. This contribution to a small but growing body of studies of the likely longevity of hillslope soils in Australia shows that 'garden-variety' 10Be can be a very useful tracer, but only if its transport both within the solum and saprolite is taken in account. � 2010 Elsevier B.V. All rights reserved.

    KW - cosmogenic radionuclide

    KW - hillslope

    KW - longevity

    KW - saprolite

    KW - sedimentation

    KW - soil erosion

    KW - Australia

    M3 - Article

    VL - 81

    SP - 32

    EP - 42

    JO - Catena

    JF - Catena

    SN - 0341-8162

    ER -

    Fifield K, Wasson R, Pillans B, Stone J. The longevity of hillslope soil in SE and NW Australia. Catena. 2010;81:32-42.