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DOI	10.1016/j.palaeo.2019.109463
	Climates of the last three interglacials in subtropical eastern Australia inferred from wetland sediment geochemistry
	Kemp C.W.; Tibby J.; Arnold L.J.; Barr C.; Gadd P.S.; Marshall J.C.; McGregor G.B.; Jacobsen G.E.
发表日期	2020
ISSN	0031-0182
卷号	538
英文摘要	Records of Australian climate during Marine Isotope Stages 5 and 7 (130–71 and 243–191 ka) are rare, preventing detailed assessments of long-term climate, drivers and ecological responses across the continent over glacial-interglacial timescales. This study presents a geochemistry-based palaeoclimate record from Fern Gully Lagoon on North Stradbroke Island (also known as Minjerribah) in subtropical eastern Australia, which records climates in MIS 7a–c, MIS 5 and much of the Holocene, in addition to MIS 4 (71–57 ka), and parts of MIS 6, MIS 3 and MIS 2 (191–130, 57–29 and 29–14 ka). Indicators of inorganic sedimentation from a 9.5 m sediment core – focussed on high-resolution estimates of sediment geochemistry supported by x-radiography, inorganic content and magnetic susceptibility – were combined with a chronology consisting of six radiocarbon (14C) and thirteen single-grain optically stimulated luminescence (OSL) ages. Hiatuses occurred at ~178–153 ka, ~36–21 ka and ~7–2 ka and likely result from the wetland drying. Low values of locally sourced aeolian materials indicate a wet MIS 7a–c and early MIS 6 before a relatively dry MIS 5. Inorganic flux during the Holocene was up to four times greater than during MIS 5, consistent with long-term interglacial drying observed in other regions, most notably in central Australia. This study highlights the importance of employing a combination of multiple dating approaches and calibrated geochemical proxies to derive climate reconstructions and to identify depositional complexities in organic-rich wetland records. © 2019 Elsevier B.V.
英文关键词	Holocene; MIS 5; MIS 7; North Stradbroke Island; Palaeoclimate; μXRF
语种	英语
scopus关键词	geochemistry; glacial-interglacial cycle; gully erosion; Holocene; interglacial; marine isotope stage; paleoclimate; reconstruction; sediment chemistry; sediment core; X-ray fluorescence; Australia; North Stradbroke Island; Queensland; Filicophyta
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150692
作者单位	Geography, Environment and Population, Sprigg Geobiology Centre, University of Adelaide, Australia; School of Physical Science, Environment Institute, Sprigg Geobiology Centre, Institute for Photonics and Advanced Sensing, University of Adelaide, Australia; Australian Nuclear Science and Technology Organisation, Lucas Heights, Australia; Queensland Department of Environment and Science, Brisbane, Australia; Australian Rivers Institute, Griffith University, Brisbane, Australia
推荐引用方式 GB/T 7714	Kemp C.W.,Tibby J.,Arnold L.J.,et al. Climates of the last three interglacials in subtropical eastern Australia inferred from wetland sediment geochemistry[J],2020,538.
APA	Kemp C.W..,Tibby J..,Arnold L.J..,Barr C..,Gadd P.S..,...&Jacobsen G.E..(2020).Climates of the last three interglacials in subtropical eastern Australia inferred from wetland sediment geochemistry.Palaeogeography, Palaeoclimatology, Palaeoecology,538.
MLA	Kemp C.W.,et al."Climates of the last three interglacials in subtropical eastern Australia inferred from wetland sediment geochemistry".Palaeogeography, Palaeoclimatology, Palaeoecology 538(2020).