气候变化领域集成服务门户(CCPortal): Late Miocene drainage reorganization on the NE Tibetan Plateau linked to growth of the Qilian Shan revealed by coupled carbonate Sr-silicate Nd isotopic tracers

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DOI	10.1016/j.palaeo.2024.112038
	Late Miocene drainage reorganization on the NE Tibetan Plateau linked to growth of the Qilian Shan revealed by coupled carbonate Sr-silicate Nd isotopic tracers
	Yan, Zhongyi; Yang, Rongsheng; Yang, Yibo; Liu, Yudong; Galy, Albert; Fang, Xiaomin
发表日期	2024
ISSN	0031-0182
EISSN	1872-616X
起始页码	638
卷号	638
英文摘要	The tectonically active NE Tibetan Plateau, which is located at the confluent area of the humid Asian monsoon region and dry Asian inlands, provides excellent archives of drainage pattern evolution in response to regional changes in topography and climate. However, the uplift of the NE Tibetan Plateau and formation of modern drainage patterns are still disputed. In this study, based on the Sr-Nd isotopic distribution in modern surface water and sediments, we present integrated records of 87Sr/86Sr ratios in carbonate and 87Sr/86Sr-epsilon Nd(0) values in silicate of the Huaitoutala section in the northern Qaidam Basin to reveal the source-to-sink history of particulate and dissolved loads since -15 Ma. Our results show that changes in Sr-Nd isotopes at ca. 10 Ma and ca. 5 Ma are indicative of two stages of source alteration and reorganization of the drainage system. Specifically, a remarkable increase in 87Sr/86Sr ratios in carbonate and silicate together with a decrease in epsilon Nd(0) values since ca. 10 Ma suggests a tectonic denudation event of Qilian Shan at -10 Ma. The subsequent declines in 87Sr/86Sr ratios in carbonate and silicate together with an increase in epsilon Nd(0) values since ca. 5 Ma, which approach the modern 87Sr/86Sr ratios near the study section site, suggest that a modern-like drainage pattern in the northern Qaidam Basin might have formed in response to tectonic uplift of Qilian Shan at ca. 5 Ma. Using coupled carbonate Sr-silicate Sr-Nd isotopes, we provide reliable provenance tracers of drainage reorganization and the evolution of source-to-sink systems caused by tectonic deformation.
英文关键词	Sr - Nd isotopes; Tibetan Plateau; Miocene; Qaidam Basin; Source -to -sink system
语种	英语
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:001172655000001
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
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/303617
作者单位	Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Universite de Lorraine; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU)
推荐引用方式 GB/T 7714	Yan, Zhongyi,Yang, Rongsheng,Yang, Yibo,et al. Late Miocene drainage reorganization on the NE Tibetan Plateau linked to growth of the Qilian Shan revealed by coupled carbonate Sr-silicate Nd isotopic tracers[J]. 中国科学院青藏高原研究所,2024,638.
APA	Yan, Zhongyi,Yang, Rongsheng,Yang, Yibo,Liu, Yudong,Galy, Albert,&Fang, Xiaomin.(2024).Late Miocene drainage reorganization on the NE Tibetan Plateau linked to growth of the Qilian Shan revealed by coupled carbonate Sr-silicate Nd isotopic tracers.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,638.
MLA	Yan, Zhongyi,et al."Late Miocene drainage reorganization on the NE Tibetan Plateau linked to growth of the Qilian Shan revealed by coupled carbonate Sr-silicate Nd isotopic tracers".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 638(2024).