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Geomorphic and chronometric evidence for high lake level history inGahai Lake and Toson Lake of north-eastern Qaidam Basin, north-easternQinghai-Tibetan Plateau
Fan, Qishun; Ma, Haizhou; Cao, Guangchao; Chen, Zongyan; Cao, Shengkui
2012
发表期刊JOURNAL OF QUATERNARY SCIENCE
ISSN0267-8179
卷号27期号:8页码:819-827
摘要Palaeoshorelines, highstand lacustrine sediments and lakeshore terraces are preserved around saline lakes in the arid Qaidam Basin. Previous research indicates that the chronology of a mega-paleolake in the Qaidam Basin during the late Pleisotocene is controversial. Here we report quartz optically stimulated luminescence (OSL) age estimates of highstand lacustrine sediments, shoreline features and geomorphic exposures that contribute to a revision of the lake level history of Gahai and Toson lakes in the north-eastern Qaidam Basin, on the northeastern QinghaiTibetan Plateau (QTP) margin. The results imply that: (i) high lake levels at Gahai and Toson lakes based on quartz OSL dating occurred at 8572, 6355, 31, 5.4 and 0.90.7 ka, probably corresponding to periods of warm and wet climate; (ii) periods of high lake levels are almost synchronous with other lakes on the QTP (e.g. Qinghai and Namco lakes), with the highest late Pleistocene levels occurring during Marine Oxygen Isotope Stage 5; and (iii) highstand phases on the QTP are out of phase with those of low-latitude lakes in the southern hemisphere, possibly driven by solar insolation variability in the low-latitude region. Copyright (c) 2012 John Wiley & Sons, Ltd. Palaeoshorelines, highstand lacustrine sediments and lakeshore terraces are preserved around saline lakes in the arid Qaidam Basin. Previous research indicates that the chronology of a mega-paleolake in the Qaidam Basin during the late Pleisotocene is controversial. Here we report quartz optically stimulated luminescence (OSL) age estimates of highstand lacustrine sediments, shoreline features and geomorphic exposures that contribute to a revision of the lake level history of Gahai and Toson lakes in the north-eastern Qaidam Basin, on the northeastern QinghaiTibetan Plateau (QTP) margin. The results imply that: (i) high lake levels at Gahai and Toson lakes based on quartz OSL dating occurred at 8572, 6355, 31, 5.4 and 0.90.7 ka, probably corresponding to periods of warm and wet climate; (ii) periods of high lake levels are almost synchronous with other lakes on the QTP (e.g. Qinghai and Namco lakes), with the highest late Pleistocene levels occurring during Marine Oxygen Isotope Stage 5; and (iii) highstand phases on the QTP are out of phase with those of low-latitude lakes in the southern hemisphere, possibly driven by solar insolation variability in the low-latitude region. Copyright (c) 2012 John Wiley & Sons, Ltd.
关键词Gahai Lake High Lake Level North-eastern Qinghai-tibetan Plateau Osl
收录类别SCI
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/2018
专题青海盐湖研究所知识仓储
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Fan, Qishun,Ma, Haizhou,Cao, Guangchao,et al. Geomorphic and chronometric evidence for high lake level history inGahai Lake and Toson Lake of north-eastern Qaidam Basin, north-easternQinghai-Tibetan Plateau[J]. JOURNAL OF QUATERNARY SCIENCE,2012,27(8):819-827.
APA Fan, Qishun,Ma, Haizhou,Cao, Guangchao,Chen, Zongyan,&Cao, Shengkui.(2012).Geomorphic and chronometric evidence for high lake level history inGahai Lake and Toson Lake of north-eastern Qaidam Basin, north-easternQinghai-Tibetan Plateau.JOURNAL OF QUATERNARY SCIENCE,27(8),819-827.
MLA Fan, Qishun,et al."Geomorphic and chronometric evidence for high lake level history inGahai Lake and Toson Lake of north-eastern Qaidam Basin, north-easternQinghai-Tibetan Plateau".JOURNAL OF QUATERNARY SCIENCE 27.8(2012):819-827.
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