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Article

New Record of Dust Input and Provenance During Glacial Periods in Western Australia Shelf (IODP Expedition 356, Site U1461) from the Middle to Late Pleistocene

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Centre de Formation et de Recherche sur les Environnements Méditerranéens, Université de Perpignan Via Domitia, UMR 5110, 52 Avenue Paul Alduy, CEDEX, F-66860 Perpignan, France
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CNRS, Centre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, 52 Avenue Paul Alduy, CEDEX, F-66860 Perpignan, France
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Energy & Mineral Resources Group, Geological Institute Wüllnerstr. 2, RWTH Aachen University, 52052 Aachen, Germany
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Observatoire Midi-Pyrénées, LEGOS (Université de Toulouse, CNRS/CNES/IRD/UPS), 14 avenue Edouard Belin, 31400 Toulouse, France
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Institute of Geosciences, CAU Kiel, Ludewig-Meyn-Straße 10, 24118 Kiel, Germany
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MARUM Center for Marine Environmental Sciences, University of Bremen, Leobener Str. 8, 28359 Bremen, Germany
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Department of Historical Geology & Palaeontology, Faculty of Geology and Geoenvironment, National and Kapodistrian University of Athens, 15784 Athens, Greece
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Département Origines et Evolution, Muséum National d’Histoire Naturelle, UMR7207 CR2P, 8 rue Buffon, 75005 Paris, France
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Géosciences-Environnement Toulouse, Université de Toulouse, UPS (SVT-OMP), CNRS, IRD, 31400 Toulouse, France
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Department of Geosciences, University of Bremen, Klagenfurter Strasse Bremen, 28359 Bremen, Germany
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School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
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Author to whom correspondence should be addressed.
Atmosphere 2020, 11(11), 1251; https://doi.org/10.3390/atmos11111251
Received: 29 September 2020 / Revised: 12 November 2020 / Accepted: 17 November 2020 / Published: 20 November 2020
(This article belongs to the Special Issue Paleoclimate and Its Connection with Future Climate Change)
International Ocean Discovery Program (IODP) Expedition 356 Site U1461 represents one of the few records from the North West Australian shelf that provides information about aridity fluctuations in Australia during the Quaternary. A combination of chronostratigraphic indicators revealed the (partial) preservation of two major glaciations (Marine Isotope Stage (MIS) 2 and MIS 12) in the sedimentary record. The faunal content (mainly benthic foraminifera, corals and bryozoans) was analyzed to estimate paleo-environments and paleo-depths in order to determine if these sediments have been remobilized by reworking processes. Despite the occurrence of a depositional hiatus (including MIS 5d to MIS 9-time interval), the excellent preservation of faunal content suggests that the preserved sediment is in situ. The geochemical composition of the sediments (Nd and major elements) indicates that during MIS 12 riverine input was likely reduced because of enhanced aridity, and the sediment provenance (mainly atmospheric dust) is likely in the central (Lake Eyre) or eastern (Murray Darling Basin) parts of the Australian continent. MIS 2 is confirmed to be one of the driest periods recorded in Australia but with mixed dust sources from the eastern and western parts of the continent. More humid conditions followed the glacial maximum, which might correspond to the peak of the Indian-Australian Summer Monsoon. View Full-Text
Keywords: aeolian dust; northwest Australia; dust provenance; paleoclimate; Nd isotopes; foraminifera; corals; bryozoans aeolian dust; northwest Australia; dust provenance; paleoclimate; Nd isotopes; foraminifera; corals; bryozoans
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MDPI and ACS Style

Courtillat, M.; Hallenberger, M.; Bassetti, M.-A.; Aubert, D.; Jeandel, C.; Reuning, L.; Korpanty, C.; Moissette, P.; Mounic, S.; Saavedra-Pellitero, M. New Record of Dust Input and Provenance During Glacial Periods in Western Australia Shelf (IODP Expedition 356, Site U1461) from the Middle to Late Pleistocene. Atmosphere 2020, 11, 1251. https://doi.org/10.3390/atmos11111251

AMA Style

Courtillat M, Hallenberger M, Bassetti M-A, Aubert D, Jeandel C, Reuning L, Korpanty C, Moissette P, Mounic S, Saavedra-Pellitero M. New Record of Dust Input and Provenance During Glacial Periods in Western Australia Shelf (IODP Expedition 356, Site U1461) from the Middle to Late Pleistocene. Atmosphere. 2020; 11(11):1251. https://doi.org/10.3390/atmos11111251

Chicago/Turabian Style

Courtillat, Margot, Maximilian Hallenberger, Maria-Angela Bassetti, Dominique Aubert, Catherine Jeandel, Lars Reuning, Chelsea Korpanty, Pierre Moissette, Stéphanie Mounic, and Mariem Saavedra-Pellitero. 2020. "New Record of Dust Input and Provenance During Glacial Periods in Western Australia Shelf (IODP Expedition 356, Site U1461) from the Middle to Late Pleistocene" Atmosphere 11, no. 11: 1251. https://doi.org/10.3390/atmos11111251

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