Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.quascirev.2010.04.014 |
Loess and floods: High-resolution multi-proxy data of Last Glacial Maximum (LGM) slackwater deposition in the Flinders Ranges, semi-arid South Australia | |
Haberlah, David1; Williams, Martin A. J.2; Halverson, Galen1; McTainsh, Grant H.3; Hill, Steven M.1; Hrstka, Tomas4; Jaime, Patricio5; Butcher, Alan R.5; Glasby, Peter2 | |
通讯作者 | Haberlah, David |
来源期刊 | QUATERNARY SCIENCE REVIEWS
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ISSN | 0277-3791 |
出版年 | 2010 |
卷号 | 29期号:19-20页码:2673-2693 |
英文摘要 | Terrace remnants of late Pleistocene fine-grained valley-fill deposits (Silts) deeply entrenched by ephemeral traction load streams in arid areas remain a puzzle. They have been attributed to a variety of origins ranging from lacustrine to alluvial floodplains. We here report a centimetre-scale multi-proxy study of a 7 m 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). The results of detailed lithostratigraphic mapping, high-resolution parametric particle-size analysis, Automated Mineralogy, induced magnetic susceptibility, carbon stable isotope geochemistry, and a chronostratigraphy based on 27 AMS radiocarbon and 6 luminescence ages are discussed in terms of sediment provenance, depositional environment and weathering history with the aim of reconstructing the regional palaeo-environment. The data 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. Accordingly, weathered slope mantles and loess accessions were eroded and entrained by numerous small and at least a dozen large-scale flood events, and trapped in an intra-montane floodplain extending into Brachina Gorge. Upstream of this narrow constriction, recurrent backflooding is discussed resulting in a thick sequence of layered to laminated slackwater couplets. 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. In conclusion, 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. (c) 2010 Elsevier Ltd. All rights reserved. |
类型 | Article |
语种 | 英语 |
国家 | Australia ; Czech Republic |
收录类别 | SCI-E |
WOS记录号 | WOS:000281360500019 |
WOS关键词 | CLIMATIC CONTROLS ; ATMOSPHERIC CO2 ; KUISEB RIVER ; NAMIB DESERT ; LAKE FROME ; QUATERNARY ; LUMINESCENCE ; CHRONOLOGY ; SEDIMENTS ; TERRESTRIAL |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/166189 |
作者单位 | 1.Univ Adelaide, Sch Earth & Environm Sci, Ctr Tecton Resources & Explorat TRaX, Adelaide, SA 5005, Australia; 2.Univ Adelaide, Sch Social Sci, Adelaide, SA 5005, Australia; 3.Griffith Univ, Atmospher Environm Res Ctr, Brisbane, Qld 4111, Australia; 4.Acad Sci Czech Republ, Inst Geol, VVI, Prague 16500 6, Czech Republic; 5.FEI Ctr Excellence Automated Mineral, Brisbane, Qld 4064, Australia |
推荐引用方式 GB/T 7714 | Haberlah, David,Williams, Martin A. J.,Halverson, Galen,et al. Loess and floods: High-resolution multi-proxy data of Last Glacial Maximum (LGM) slackwater deposition in the Flinders Ranges, semi-arid South Australia[J],2010,29(19-20):2673-2693. |
APA | Haberlah, David.,Williams, Martin A. J..,Halverson, Galen.,McTainsh, Grant H..,Hill, Steven M..,...&Glasby, Peter.(2010).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,29(19-20),2673-2693. |
MLA | Haberlah, David,et al."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 29.19-20(2010):2673-2693. |
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