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  • 1
    Call number: AWI G7-98-0169
    Type of Medium: Monograph available for loan
    Pages: III, 142 S. , Ill., graph. Darst.
    ISSN: 1040-6182
    Series Statement: Quaternary International 45/46
    Note: Contents: Preface / W. Karlén, J. Lundqvist and N. Rutter. - Late-Weichselian ice sheets in Arctic and Pacific Siberia / M. G. Grosswald. - The last ice sheet of the Kara Sea: terrestrial constraints on its age / A. Astakhov. - Stratigraphy and paleogeography of the Sartan Glaciation in West Siberia / S. A. Arkhipov. - The relationship of massive ground ice and the late Pleistocene history of northwest Siberia / F. A. Michel. - Scanning electron microscopy of pleistocene sands from Yamal and Taz Peninsulas, Ob River Estuary, Northwestern Siberia / W. C. Mahaney. - The quaternary vegetation and landscape evolution of Novaya Zemlya in the light of palynological records / L. Serebryanny and E. Malyasova. - Reconstruction of the 2.4 million km2 late pleistocene ice sheet on the Tibetan Plateau and its impact on the Tibetan Plateau and its impact on the global climate / M. Kuhle. - On the problem of Quaternary glaciations, and the extent and patterns of pleistocene ice cover in the Qinghai-Xizang (Tibet) Plateau / Z. Benzing and N. Rutter. - Extent and spatial distribution of pleistocene glaciations in Eastern Tibet / F. Lehmkuhl. - The sequence of the quaternary glaciation in the Bayan Har Mountains / Z. Shangzhe and L. Jijun.
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 2
    Publication Date: 2016-06-16
    Description: ROOTH proposed that the Younger Dryas cold episode, which chilled the North Atlantic region from 11,000 to 10,000 yr BP, was initiated by a diversion of meltwater from the Mississippi drainage to the St Lawrence drainage system. The link between these events is postulated to be a turnoff, during the Younger Dryas cold episode, of the North Atlantic's conveyor-belt circulation system which currently supplies an enormous amount of heat to the atmosphere over the North Atlantic region2. This turnoff is attributed to a reduction in surface-water salinity, and hence also in density, of the waters in the region where North Atlantic Deep Water (NADW) now forms. Here we present oxygen isotope and accelerator radiocarbon measurements on planktonic foraminifera from Orca Basin core EN32-PC4 which reveal a significant reduction in meltwater flow through the Mississippi River to the Gulf of Mexico from about 11,200 to 10,000 radiocarbon years ago. This finding is consistent with the record for Lake Agassiz which indicates that the meltwater from the southwestern margin of the Laurentide Ice Sheet was diverted to the northern Atlantic Ocean through the St Lawrence valley during the interval from ~11,000 to 10,000 years before present (yr BP).
    Type: Article , PeerReviewed
    Format: text
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