Eolian and lacustrine evidence of late Quaternary palaeoenvironmental changes in southwestern Australia

	Eolian and lacustrine evidence of late Quaternary palaeoenvironmental changes in southwestern Australia
	Zheng, HB ; Powell, CMA ; Zhao, H
刊名	GLOBAL AND PLANETARY CHANGE
	2003
卷号	35 期号:1-2 页码:75-92
关键词	Lake Cowan Lake Lefroy Late Quaternary palaeoenvironmental change Southwestern Australia
ISSN号	0921-8181
文献子类	Article
英文摘要	Lake Lefroy and Lake Cowan occur in the relic Tertiary palaeodrainage that used to drain to the east in central western Australia. Lacustrine conditions prevailed during the late Neogene and the early part of the Quaternary. Strong aridity sets in during mid-Quaternary, resulting in extensive gypsum precipitation and eolian deposition in and around the playa lakes. Lakes Lefroy and Cowan are now hypersaline and deflating, with a salt crust developed on the lake floor and lunette dunes constructed along the eastern margins. Optical dating (green light-stimulated luminescence (GLSL) dating) of the lunette dunes along the eastern and southeastern margins of the playas and electron spin resonance (ESR) dating of relic gypsum dunes on the lake floor show that intensified eolian activity occurred during the last glacial period, with a major lunette construction phase occurring during the Last Glacial Maximum (LGM). C-14 dating of high-lake deposits, which are extensively developed along the margins of Lake Cowan, suggested a significant high-lake event during the early to mid-Holocene. The late Quaternary eolian and lacustrine evidence of palaeoenvironmental changes supports the model that during the Last Glacial Maximum, the subtropical high-pressure cell intensified and probably shifted southward, displacing the southern westerlies. (C) 2002 Elsevier Science B.V. All rights reserved.
WOS关键词	WESTERN-AUSTRALIA ; THERMO-LUMINESCENCE ; EVOLUTION ; CLIMATES ; LAKE ; TASMANIA ; DUNES ; RIVER ; AGES ; EAST
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000179712400006
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/79120]
专题	中国科学院地质与地球物理研究所
通讯作者	Zheng, HB
作者单位	1.Tongji Univ, Lab Marine Geol, Shanghai 200092, Peoples R China 2.Univ Western Australia, Tect Special Res Ctr, Dept Geol & Geophys, Crawley, WA 6009, Australia 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zheng, HB,Powell, CMA,Zhao, H. Eolian and lacustrine evidence of late Quaternary palaeoenvironmental changes in southwestern Australia[J]. GLOBAL AND PLANETARY CHANGE,2003,35(1-2):75-92.
APA	Zheng, HB,Powell, CMA,&Zhao, H.(2003).Eolian and lacustrine evidence of late Quaternary palaeoenvironmental changes in southwestern Australia.GLOBAL AND PLANETARY CHANGE,35(1-2),75-92.
MLA	Zheng, HB,et al."Eolian and lacustrine evidence of late Quaternary palaeoenvironmental changes in southwestern Australia".GLOBAL AND PLANETARY CHANGE 35.1-2(2003):75-92.