BIROn - Birkbeck Institutional Research Online

    Rapid climatic events as recorded in Middle Weichselian thermokarst lake sediments

    Bohncke, S.J.P. and Bos, J.A.A. and Engels, Stefan and Heiri, O. and Kasse, C. (2008) Rapid climatic events as recorded in Middle Weichselian thermokarst lake sediments. Quaternary Science Reviews 27 (1-2), pp. 162-174. ISSN 0277-3791.

    Full text not available from this repository.

    Abstract

    From a Middle Weichselian sediment sequence in the opencast brown coal mine of Reichwalde (eastern Germany), a ~40 cm thick thermokarst gyttja deposit has been sampled. The AMS 14C dates, although at the limit of detection, indicate an early Middle Weichselian age of the gyttja. Pollen, botanical, and zoological (e.g. chironomids) macroremains have been analyzed. Botanical and chironomid taxa indicate warm climatic conditions in the bottom part of the sequence. For this lower part the botanical data suggest a minimum mean July temperature of 12–14 1C. Following this, a cooling is indicated, coinciding with an increased clastic deposition in the lake. A return to permafrost conditions is reconstructed for the upper part of the sequence. The combined evidence strongly suggests a degradation of permafrost due to increased warming in response to a D/O event as a forcing factor for the thermokarst lake formation

    Metadata

    Item Type: Article
    School: School of Social Sciences, History and Philosophy > Department of Geography
    Depositing User: Stefan Engels
    Date Deposited: 13 Jan 2021 15:34
    Last Modified: 13 Jan 2021 15:34
    URI: https://eprints.bbk.ac.uk/id/eprint/41747

    Statistics

    Downloads
    Activity Overview
    0Downloads
    13Hits

    Additional statistics are available via IRStats2.

    Archive Staff Only (login required)

    Edit/View Item Edit/View Item