气候变化领域集成服务门户(CCPortal): Mid-Holocene palaeohydrochemistry and palaeohydrology of Yamdrok Yumtso, southern Tibetan Plateau, reconstructed from delta O-18 and delta C-13 of fossil shells of the gastropod Radix auricularia

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DOI	10.1177/0959683620950426
	Mid-Holocene palaeohydrochemistry and palaeohydrology of Yamdrok Yumtso, southern Tibetan Plateau, reconstructed from delta O-18 and delta C-13 of fossil shells of the gastropod Radix auricularia
	Chen, Feng; Feng, Jin-Liang; Hu, Hai-Ping; Wang, Ping
通讯作者	Chen, F (通讯作者)
发表日期	2020
ISSN	0959-6836
EISSN	1477-0911
起始页码	1741
结束页码	1751
卷号	30 期号:12
英文摘要	Palaeohydrochemical and palaeohydrological changes of lakes have seldom been reconstructed from the fossil shells of the gasropodRadix auricularia, which is a new, and potentially high-resolution environnmental archive. We conducted a geochemical and stable isotope study of the shells ofRadixfrom the exposed fluvio-lacustrine sediments near Lake Yamdrok Yumtso in the southern Tibetan Plateau. Our aims were to determine the sedimentary environment, palaeo-lake hydrochemistry and hydrological status. AMS(14)C and OSL dating indicates that a lake-level stage of Yamdrok Yumtso higher than that of today occurred during similar to 4.7-1.2 cal. kyr BP. Results of Sr/Ca, delta C-13 and delta O-18 analysis of the fossil shells ofRadix auriculariaindicate that the lake-level fluctuations were mainly controlled by changes of the Indian Summer Monsoon; decreasing evaporation during the mid- to late-Holocene was also responsible. In addition, based on the geochemical relationship betweenRadixsp. shells and the ambient water in lakes, the values of delta O-18(Palaeo-water) and Sr/CaPalaeo-water reconstructed using the fossil shells ofRadix auriculariaare -8.2 parts per thousand to -5.1 parts per thousand and 0.0012 to 0.0057, respectively. Further, based on the values of delta O-18(shell), together with geomorphological evidence, we infer that Yamdrok Yumtso was a closed lake system, and we estimate its possible extent during the interval of high lake-level. In addition, we speculate that the water level of Yamdrok Yumtso at this time exceeded 4448.9 m a.s.l., but was less than 4451 m a.s.l., and that the major separation of various components of the Yamdrok Yumtso system occurred after 1.2 kyr BP.
关键词	LATE QUATERNARY GLACIATION NAM-CO ENVIRONMENTAL-CHANGES HOLOCENE CLIMATE LAKE MONSOON ISOTOPE OXYGEN LACUSTRINE FLUCTUATIONS
英文关键词	fluvio-lacustrine succession; gastropodRadix auricularia; oxygen and carbon isotopes; Sr/Ca ratio; Tibetan Plateau; Yamdrok Yumtso
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000561104600001
来源期刊	HOLOCENE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259716
推荐引用方式 GB/T 7714	Chen, Feng,Feng, Jin-Liang,Hu, Hai-Ping,et al. Mid-Holocene palaeohydrochemistry and palaeohydrology of Yamdrok Yumtso, southern Tibetan Plateau, reconstructed from delta O-18 and delta C-13 of fossil shells of the gastropod Radix auricularia[J]. 中国科学院青藏高原研究所,2020,30(12).
APA	Chen, Feng,Feng, Jin-Liang,Hu, Hai-Ping,&Wang, Ping.(2020).Mid-Holocene palaeohydrochemistry and palaeohydrology of Yamdrok Yumtso, southern Tibetan Plateau, reconstructed from delta O-18 and delta C-13 of fossil shells of the gastropod Radix auricularia.HOLOCENE,30(12).
MLA	Chen, Feng,et al."Mid-Holocene palaeohydrochemistry and palaeohydrology of Yamdrok Yumtso, southern Tibetan Plateau, reconstructed from delta O-18 and delta C-13 of fossil shells of the gastropod Radix auricularia".HOLOCENE 30.12(2020).