干旱区生态环境知识资源中心(Arid): THE EVOLUTION OF SMALL LAKE BASINS IN THE GOBI DESERT IN MONGOLIA

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	THE EVOLUTION OF SMALL LAKE BASINS IN THE GOBI DESERT IN MONGOLIA
	J.Grunert; C.Stolz; N.Hempelmann; A.Hilgers; D.Hulle; F.Lehmkuhl; T.Felauer; D.Dasch
来源期刊	Quaternary Sciences
ISSN	1001-7410
出版年	2009
卷号	29 期号:4 页码:678-686
英文摘要	In order to investigate pluvial lakes in the Gobi two places were selected for field studies:Khongoryn Els in South-and Mongol Eis in West-Mongolia.In the eastern and central parts of Khongoryn gls two small endorheic basins,Bayan Tukhem and Khongoryn Gol depressions were studied.Pluvial lake deposits and beach ridges both supposedly mid-Holocene in age give evidence of a 9m and a 15m deep freshwater lake,respectively.Today both depressions are nearly dried out and exposed to wind deflation.A different situation was found at Uujin Sair river valley which cuts through the dune field at its lowest and narrowest(3 kin)part.Here,a 22.5 m thick fossil accumulation of at least 20 layers of fine sand (dune sand)alternating with silt(fluvial playa sediment)was exposed and OSL dated.12 dates ranging between 14ka and 17ka reveal the accumulation as Late Glacial which correlates well with the aridity at that time reported for Central Asia by several authors.Interpreting the dates it seems obvious that the whole sediment was quickly deposited in a period of about 16ka,and shortly after dissected by the Uujin Sair during a similar short time due to increasing humidity of the elimate.Another situation was found at the eastern rim of Mongol Els.Two rivers,Shurgiyn Gol and Zavran Gol are impinging here on the high dunes which have damed both rivers in the past.A younger,shallow lake existed during mid-Holocene (~(14C)-dated to some 5.5ka)and a large,17m deep lake(~(14)C-dated to some 39ka)probably during stage 4.Expected OSL dates will hopefully support this hypothesis.Anyhow,the palaeogeography of the dune field was different from today;it moved eastward daming the large river Shurgiyn Gol.
英文关键词	mid-Holocene late-Glacial playa stage 4(?)-lake
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:3592067
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335004
作者单位	J.Grunert, Universit(a)t Mainz,Geographisches Institut, Germany.; C.Stolz, Universit(a)t Mainz,Geographisches Institut, Germany.; N.Hempelmann, Universit(a)t Mainz,Geographisches Institut, Germany.; A.Hilgers, Universit(a)t K(o)ln,Geographisches Institut,Albertus-Magnus-Platz, Germany.; D.Hulle, Universit(a)t K(o)ln,Geographisches Institut,Albertus-Magnus-Platz, Germany.; F.Lehmkuhl, RWTH Aachen,Geographisches Institut, Germany.; T.Felauer, RWTH Aachen,Geographisches Institut, Germany.; D.Dasch, Mongolian Academy of Science,Sect.Geoecology, Mongolia.
推荐引用方式 GB/T 7714	J.Grunert,C.Stolz,N.Hempelmann,et al. THE EVOLUTION OF SMALL LAKE BASINS IN THE GOBI DESERT IN MONGOLIA[J],2009,29(4):678-686.
APA	J.Grunert.,C.Stolz.,N.Hempelmann.,A.Hilgers.,D.Hulle.,...&D.Dasch.(2009).THE EVOLUTION OF SMALL LAKE BASINS IN THE GOBI DESERT IN MONGOLIA.Quaternary Sciences,29(4),678-686.
MLA	J.Grunert,et al."THE EVOLUTION OF SMALL LAKE BASINS IN THE GOBI DESERT IN MONGOLIA".Quaternary Sciences 29.4(2009):678-686.