TY - JOUR
TI - 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
AU - Courtillat, M.
AU - Hallenberger, M.
AU - Bassetti, M.-A.
AU - Aubert, D.
AU - Jeandel, C.
AU - Reuning, L.
AU - Korpanty, C.
AU - Moissette, P.
AU - Mounic, S.
AU - Saavedra-Pellitero, M.
JO - Atmospheric Measurement Techniques
PY - 2020
VL - 11
TODO - 11
SP - 1-25
PB - MDPI AG
SN - null
TODO - 10.3390/atmos11111251
TODO - Dust;  Glacial geology, Australian continents;  Australian summer monsoons;  Benthic foraminifera;  Geochemical composition;  Marine isotope stages;  Murray-Darling Basin;  Sediment provenance;  Sedimentary records, Sediments, bryozoan;  coral;  dust;  eolian deposit;  foraminifera;  geological record;  marine isotope stage;  neodymium isotope;  paleoclimate;  Pleistocene;  provenance, Indian Ocean;  Northwest Australian Shelf, Anthozoa;  Bryozoa;  Foraminifera
TODO - 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. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
ER -