Massive expansion of marine archaea during a mid-Cretaceous oceanic anoxic event

M.M.M. Kuypers, P. Blokker, J. Erbacher, Hanno Kinkel, R.D. Pancost, S. Schouten, J.S. Sinninghe Damsté

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review


    Biogeochemical and stable carbon isotopic analysis of black-shale sequences deposited during an Albian oceanic anoxic event (∼112 million years ago) indicate that up to 80 weight percent of sedimentary organic carbon is derived from marine, nonthermophilic archaea. The carbon-13 content of archaeal molecular fossils indicates that these archaea were living chemoautotrophically. Their massive expansion may have been a response to the strong stratification of the ocean during this anoxic event. Indeed, the sedimentary record of archaeal membrane lipids suggests that this anoxic event marks a time in Earth history at which certain hyperthermophilic archaea adapted to low-temperature environments.
    Udgave nummer5527
    Sider (fra-til)92-94
    Antal sider3
    StatusUdgivet - 6. jul. 2001

    Fingeraftryk Dyk ned i forskningsemnerne om 'Massive expansion of marine archaea during a mid-Cretaceous oceanic anoxic event'. Sammen danner de et unikt fingeraftryk.