Lower Eocene to Lower Miocene stratigraphy and paleoenvironment of ODP Site 643A, Norwegian Sea

    Publikation: Bidrag til bog/rapport/konferenceproceedingsKonferenceartikel i proceedingspeer review

    1 Citationer (Scopus)

    Abstrakt

    The focus of this study is the lower Eocene to lower Miocene succession in ODP Site 643A. The site is located in the Norwegian Sea, at the base of the Outer Vøring Plateau (OVP). We analysed dinocyst assemblages and calculated the relative input of soil organic matter using an organic proxy, the branched/isoprenoid tetraether (BIT) index. Our results suggest outer neritic or oceanic conditions during the deposition of the studied succession, and a progressive submerging of the OVP. A transition from a stratified oxygen-depleted water column into a mixed and well-oxygenated column is observed at ~41.2 Ma and might be connected with subsidence of the OVP. The variations in dinocyst abundance indicate that there was a connected surface water circulation within the Norwegian–Greenlandic Sea in the latest Lutetian. Our record also suggests that there was a good surface water exchange between the Norwegian Sea and the North Sea Basin during the earliest Oligocene and at the Oligocene–Miocene transition.

    OriginalsprogEngelsk
    TitelSTRATI 2013. First International Congress on Stratigraphy At the Cutting Edge of Stratigraphy
    RedaktørerRogério Rocha, João Pais, José Carlos Kullberg, Stanley Finney
    ForlagSpringer
    Sider143-147
    Antal sider5
    ISBN (Elektronisk)978-3-319-04364-7
    ISBN (Trykt)978-3-319-04363-0
    DOI
    StatusUdgivet - 2014
    BegivenhedSTRATI 2013: 1st International Congress on Stratigraphy At the Cutting Edge of Stratigraphy - Lisbon, Portugal
    Varighed: 1 jul. 20137 jul. 2013

    Publikationsserier

    NavnSpringer Geology
    ISSN (Trykt)2197-9545
    ISSN (Elektronisk)2197-9553

    Konference

    KonferenceSTRATI 2013: 1st International Congress on Stratigraphy At the Cutting Edge of Stratigraphy
    ByLisbon, Portugal
    Periode1/07/137/07/13

    Programområde

    • Programområde 3: Energiressourcer
    • Programområde 5: Natur og klima

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