Počet záznamů: 1

Loess and floods: High-resolution multi-proxy data of Last Glacial Maximum (LGM) slackwater deposition in the Flinders Ranges, semi-arid South Australia

  1. 1.
    0348543 - GLU-S 2011 RIV GB eng J - Článek v odborném periodiku
    Haberlah, D. - Williams, M. A. J. - Halverson, G. - McTainsh, G. H. - Hill, S. M. - Hrstka, Tomáš - Jaime, P. - Butcher, A. R. - Glasby, P.
    Loess and floods: High-resolution multi-proxy data of Last Glacial Maximum (LGM) slackwater deposition in the Flinders Ranges, semi-arid South Australia.
    Quaternary Science Reviews. Roč. 29, 19/20 (2010), s. 2673-2693 ISSN 0277-3791
    Výzkumný záměr: CEZ:AV0Z30130516
    Klíčová slova: Namib desert * paleoclimatic implications * C-4 photosynthesis * climatic controls * atmospheric CO2 * Yellow-River * Kuiseb River * Lake Frome * sediments
    Kód oboru RIV: DB - Geologie a mineralogie
    Impakt faktor: 4.657, rok: 2010

    We report a centimetre-scale study of a section of Silts in the semi-arid Flinders Ranges of South Australia, which span the lead-up to and peak of the Last Glacial Maximum (LGM). A range of geological and mineralogical methods, carbon stable isotope geochemistry, and chronostratigraphy yielded data which are consistent with a fluctuating aeolian-fluvial interplay dominating the extended LGM environment with a greater impact on the landscape than all combined geomorphic processes since then. Aggradation and degradation of valley-fills appear to be largely controlled by fine-sediment supply from the valley slopes, replenished by wind-blown dust from upwind playa lakes and source-bordering dunefields. This study demonstrates how dust storms and flooding rains can account for 'pluvial' features previously explained by the opposing effects of reduced precipitation and evaporation in the colder more arid glacial landscape of southern Australia.
    Trvalý link: http://hdl.handle.net/11104/0189060