OSL dating of paleoshorelines at Lagkor Tso, western Tibet |
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Authors: | J Lee Sheng-Hua Li JC Aitchison |
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Institution: | aDept of Earth Sciences, The University of Hong Kong, Hong Kong SAR, China |
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Abstract: | Lagkor Tso, a saline lake located south of Gertse in western Tibet exhibits spectacular flights of paleoshorelines. Optically stimulated luminescence (OSL) dating on quartz using the single-aliquot regenerative-dose (SAR) protocol from five paleoshoreline deposits shows that the lake level was 130 m higher than the present lake surface 5.2 ka ago. The lake level dropped rapidly by 25 m between 5.2 ka and 3.7 ka ago. Lake shrinkage further accelerated between 3.7 ka and 3.2 ka ago, when the lake level was just 74 m above the present lake surface. Luminescence characteristics and problematic samples are discussed. |
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Keywords: | OSL dating Paleoshorelines Lagkor Tso Tibet |
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