Mineralogical implications for the Late Pleistocene glaciation in Amery Oasis, East Antarctica, from a lake sediment core

Nadja Hultzsch, Bernd Wagner, Bernhard Diekmann, Duanne White

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    The clay mineralogical composition of a 552 cm long sediment core from Lake Terrasovoje in Amery Oasis, East Antarctica, was analysed and compared with that in surface sediments from other locations in the vicinity. The lower part of the sediment core is formed by sub- and proglacial sediments with a dominance of smectite and illite, and lower amounts of kaolinite and chlorite. The upper part of the core is deposited after 12 500 cal yr BP and mainly composed of illite and kaolinite, with low amounts of smectite and chlorite, such as found in samples from rock outcrops and covering sediments throughout Amery Oasis. The clay composition in the lower section of core Lz1005 suggest that the basin of Lake Terrasovoje was filled by a 150-200 m thickened Nemesis Glacier prior to 12 500 cal yr BP rather than by local ice caps.
    Original languageEnglish
    Pages (from-to)169-172
    Number of pages4
    JournalAntarctic Science
    Volume20
    DOIs
    Publication statusPublished - 2008

    Fingerprint

    oases
    oasis
    glaciation
    Antarctica
    sediment core
    lacustrine deposit
    Pleistocene
    lakes
    illite
    smectite
    sediments
    chlorite
    kaolinite
    chlorite (mineral)
    sediment
    clay
    ice cap
    lake
    glacier
    outcrop

    Cite this

    @article{d4beed64e549478da4dd852c82cb2bb3,
    title = "Mineralogical implications for the Late Pleistocene glaciation in Amery Oasis, East Antarctica, from a lake sediment core",
    abstract = "The clay mineralogical composition of a 552 cm long sediment core from Lake Terrasovoje in Amery Oasis, East Antarctica, was analysed and compared with that in surface sediments from other locations in the vicinity. The lower part of the sediment core is formed by sub- and proglacial sediments with a dominance of smectite and illite, and lower amounts of kaolinite and chlorite. The upper part of the core is deposited after 12 500 cal yr BP and mainly composed of illite and kaolinite, with low amounts of smectite and chlorite, such as found in samples from rock outcrops and covering sediments throughout Amery Oasis. The clay composition in the lower section of core Lz1005 suggest that the basin of Lake Terrasovoje was filled by a 150-200 m thickened Nemesis Glacier prior to 12 500 cal yr BP rather than by local ice caps.",
    keywords = "clay minerals, sediment provenance, ice thickness.",
    author = "Nadja Hultzsch and Bernd Wagner and Bernhard Diekmann and Duanne White",
    year = "2008",
    doi = "10.1017/S0954102007000880",
    language = "English",
    volume = "20",
    pages = "169--172",
    journal = "Antarctic Science",
    issn = "0954-1020",
    publisher = "Cambridge University Press",

    }

    Mineralogical implications for the Late Pleistocene glaciation in Amery Oasis, East Antarctica, from a lake sediment core. / Hultzsch, Nadja; Wagner, Bernd; Diekmann, Bernhard; White, Duanne.

    In: Antarctic Science, Vol. 20, 2008, p. 169-172.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Mineralogical implications for the Late Pleistocene glaciation in Amery Oasis, East Antarctica, from a lake sediment core

    AU - Hultzsch, Nadja

    AU - Wagner, Bernd

    AU - Diekmann, Bernhard

    AU - White, Duanne

    PY - 2008

    Y1 - 2008

    N2 - The clay mineralogical composition of a 552 cm long sediment core from Lake Terrasovoje in Amery Oasis, East Antarctica, was analysed and compared with that in surface sediments from other locations in the vicinity. The lower part of the sediment core is formed by sub- and proglacial sediments with a dominance of smectite and illite, and lower amounts of kaolinite and chlorite. The upper part of the core is deposited after 12 500 cal yr BP and mainly composed of illite and kaolinite, with low amounts of smectite and chlorite, such as found in samples from rock outcrops and covering sediments throughout Amery Oasis. The clay composition in the lower section of core Lz1005 suggest that the basin of Lake Terrasovoje was filled by a 150-200 m thickened Nemesis Glacier prior to 12 500 cal yr BP rather than by local ice caps.

    AB - The clay mineralogical composition of a 552 cm long sediment core from Lake Terrasovoje in Amery Oasis, East Antarctica, was analysed and compared with that in surface sediments from other locations in the vicinity. The lower part of the sediment core is formed by sub- and proglacial sediments with a dominance of smectite and illite, and lower amounts of kaolinite and chlorite. The upper part of the core is deposited after 12 500 cal yr BP and mainly composed of illite and kaolinite, with low amounts of smectite and chlorite, such as found in samples from rock outcrops and covering sediments throughout Amery Oasis. The clay composition in the lower section of core Lz1005 suggest that the basin of Lake Terrasovoje was filled by a 150-200 m thickened Nemesis Glacier prior to 12 500 cal yr BP rather than by local ice caps.

    KW - clay minerals

    KW - sediment provenance

    KW - ice thickness.

    U2 - 10.1017/S0954102007000880

    DO - 10.1017/S0954102007000880

    M3 - Article

    VL - 20

    SP - 169

    EP - 172

    JO - Antarctic Science

    JF - Antarctic Science

    SN - 0954-1020

    ER -