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题名: Geomorphic and chronometric evidence for high lake level history inGahai Lake and Toson Lake of north-eastern Qaidam Basin, north-easternQinghai-Tibetan Plateau
作者: 樊启顺 ;  马海洲 ;  Cao, Guangchao ;  Chen, Zongyan ;  Cao, Shengkui
刊名: JOURNAL OF QUATERNARY SCIENCE
出版日期: 2012
卷号: 27, 期号:8, 页码:819-827
关键词: Gahai Lake ;  high lake level ;  north-eastern Qinghai-Tibetan Plateau ;  OSL
英文摘要: 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.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/2018
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
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.
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