Data report: distribution and sources of tetraether lipids in Oligocene deposits from the western North Atlantic, IODP Sites U1406 and U1411

Kasia K. Sliwinska, Anchelique Metz, Stefan Schouten

    Publikation: Bidrag til bog/rapport/konferenceproceedingsBogkapitelForskningpeer review

    Abstrakt

    We have analyzed the distribution of glycerol dialkyl glycerol tetraether lipids (GDGTs) in the Oligocene succession recovered by Integrated Ocean Drilling Program Expedition 342. The two studied sites, U1406 and U1411, penetrate a highly expanded section of the upper Eocene–Oligocene–lower Miocene succession. The branched isoprenoid tetraether (BIT) index varies between 0.2 and 0.85, implying that there was a moderate to high influx of soil organic matter to both sites. Furthermore, during the late Oligocene (Chattian) the influx was lower than during the early Oligocene (Rupelian). The methane index (MI) and %GDGT-0 index values suggest that methanotrophic Euryarchaeota and methanogenic archaea are not the main source of GDGTs, but rather marine Thaumarchaeota.
    OriginalsprogEngelsk
    TitelPaleogene Newfoundland sediment drifts and MDHDS test
    RedaktørerRichard D. Norris, Paul A. Wilson, Peter Blum
    ForlagTexas A & M University
    Antal sider12
    DOI
    StatusUdgivet - 19 apr. 2017

    Publikationsserier

    NavnProceedings of the Integrated Ocean Drilling Program
    Vol/bind342
    ISSN (Trykt)1930-1014

    Programområde

    • Programområde 5: Natur og klima

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