Geological Society of America

T242 Interrelationship between Tectonic Uplift and Quaternary Glaciations on the Tibetan Plateau and Its Surrounding Mountains

Tuesday, 24 October 2017
1:30 PM - 5:30 PM
Chelan 2

10BE EXPOSURE DATING CONSTRAINED GLACIAL ADVANCE THROUGHOUT LATEGLACIAL AND HOLOCENE ON MOUNT XUEBAODING, EASTERN TIBETAN PLATEAU

Paper number: T242-4
Program: Technical Sessions
Time: 2:10 PM – 2:25 PM

Authors

Beibei Liu Presenting Author
Peking University, Beijing
Gengnian Liu
Peking University, Beijing
Zhijiu Cui
Peking University, Beijing
Wei Zhang
Liaoning Normal University, Dalian
Jingdong Zhao
Northwest Institute of Eco-Environment and Resources, Lanzhou
Jie Wang
Lanzhou University, Lanzhou

Abstract

Mount Xuebaoding (5588 m asl) is located in the Sichuan Province, eastern Tibetan Plateau, typical glacial landforms, especially moraine series in the alpine area.¹⁰Be exposure dating method was carried out to define the chronology of the moraines. The dating results reveal glacial advance event from prior to Lateglacial (older than 14.1 ka), Lateglacial (12.6 ka, 12.4 ka), Early Holocene (9.34 ka) and Neoglaciation (2.34 ka and 1.69 ka).

These glacial stages are consistent with other recalculated ages from surrounding regions throughout the monsoon-influenced. The poorly defined pre-Lateglacial likely occurred during the global Last Glacial Maximum (LGM) or older, and during the well-defined Lateglacial there exist two glacial advance events represented by two moraines, the data indicate two fluctuations during Younger Drays (YD). The result of the present work obtain the viewpoint that Xuebaoding glacier is at least in response to the decreased temperature in North Hemisphere.

Geological Society of America Abstracts with Programs. Vol. 49, No. 6

doi: 10.1130/abs/2017AM-298090

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