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DOI	10.1029/2018GL078460
	Tectonic Control of a Change in Sedimentary Environment at similar to 10 Ma in the Northeastern Tibetan Plateau
	Zhang, Tao; Han, Wenxia; Fang, Xiaomin; Miao, Yunfa; Zhang, Weilin; Song, Chunhui; Wang, Yadong; Khatri, Dhan Bahadur; Zhang, Zhigao
通讯作者	Zhang, T (通讯作者)
发表日期	2018
ISSN	0094-8276
EISSN	1944-8007
起始页码	6843
结束页码	6852
卷号	45 期号:14
英文摘要	Tectonic uplift and climate change play a key role in the evolution of sedimentary systems in terrestrial basins. The Qaidam Basin in the northeastern Tibetan Plateau is well suited for studying these processes because of its location and its thick, continuous sequence of Cenozoic sediments. Unfortunately, however, there is a lack of continuous, well-dated sedimentary records from the region. In the present study, we combined grain-size analyses of sediment cores and outcrop samples with structural analysis of seismostratigraphic data from the western Qaidam Basin. The results reveal dramatic shifts in the depositional environment at similar to 11.5-10Ma, coeval with the topographic development of the area. Together with paleoclimatic analysis and a conceptual model, we conclude that tectonic movements, rather than climatic changes, were the dominant forcing factor. Plain Language Summary The interaction of climate and tectonics is believed to be a key controlling factor on Earth surface processes. However, it is still an open question to distinguish who provides the first driving force for those processes. The evidences based on the sedimentological and seismological study from the western Qaidam Basin suggest that a significant shift of sedimentation environment took place at similar to 10Ma, which is coeval with the development of structural landform but out of phase with climate change here. We therefore pointed out that tectonic activities rather than climate change controlled the sedimentary environment change at similar to 10Ma in the northeastern Tibetan Plateau, providing a new insight for understanding impacts of Tibetan Plateau uplift on Earth surface evolution during the late Cenozoic.
关键词	WESTERN QAIDAM BASIN GRAIN-SIZE DISTRIBUTION MODERN CLASTIC LAKE ALTYN-TAGH FAULT MIDDLE MIOCENE CLIMATE-CHANGE DEPOSITIONAL PROCESSES CENOZOIC TECTONICS CORE SEDIMENTS GROWTH STRATA
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000442582100011
来源期刊	GEOPHYSICAL RESEARCH LETTERS
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/259336
推荐引用方式 GB/T 7714	Zhang, Tao,Han, Wenxia,Fang, Xiaomin,et al. Tectonic Control of a Change in Sedimentary Environment at similar to 10 Ma in the Northeastern Tibetan Plateau[J]. 中国科学院青藏高原研究所,2018,45(14).
APA	Zhang, Tao.,Han, Wenxia.,Fang, Xiaomin.,Miao, Yunfa.,Zhang, Weilin.,...&Zhang, Zhigao.(2018).Tectonic Control of a Change in Sedimentary Environment at similar to 10 Ma in the Northeastern Tibetan Plateau.GEOPHYSICAL RESEARCH LETTERS,45(14).
MLA	Zhang, Tao,et al."Tectonic Control of a Change in Sedimentary Environment at similar to 10 Ma in the Northeastern Tibetan Plateau".GEOPHYSICAL RESEARCH LETTERS 45.14(2018).