气候变化领域集成服务门户(CCPortal): Cenozoic multi-stage deformation of the Qilian Shan orogenic belt, northern Tibetan Plateau: Insights from a detrital zircon provenance study of an Oligocene-Miocene intermontane basin sedimentary succession

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DOI	10.1016/j.jseaes.2021.105039
	Cenozoic multi-stage deformation of the Qilian Shan orogenic belt, northern Tibetan Plateau: Insights from a detrital zircon provenance study of an Oligocene-Miocene intermontane basin sedimentary succession
	Feng, Wei; Song, Chunhui; Meng, Qingquan; He, Pengju; Fang, Xiaomin; Chen, Wenqi; Wang, Xinghong; Wang, Qiaoxin
通讯作者	Song, CH (通讯作者)
发表日期	2022
ISSN	1367-9120
EISSN	1878-5786
卷号	224
英文摘要	Timing and patterns of the Cenozoic deformation of the Qilian Shan orogenic belt (QSOB) in the northern Tibetan Plateau are key to elucidating the mechanism(s) of plateau growth but remain matters of debate. The OligoceneMiocene sediments in the Subei Basin, an intermontane basin situated at the junction of the central and southern QSOB, provide direct insight into the Cenozoic deformation of the QSOB. Here, a comprehensive provenance study based on detrital zircon geochronology, paleocurrents, conglomerate components and sedimentary facies in the Subei Basin demonstrates that this region experienced three stages of tectonic events during the Cenozoic. (1) Oligocene strata contain zircons of 200-300, 400-500, 700-1000, 1600-2000 and 2400-2700 Ma, indicating primary derivation from recycled Mesozoic sedimentary rocks in the QSOB and suggesting early Cenozoic deformation in this region. (2) One sample (21.5 Ma) yields similar age populations to those of Oligocene samples, except for the complete disappearance of 200-300 Ma zircons as a result of the widespread deformation of the QSOB. (3) Two samples (18.5-13.6 Ma) show a unimodal age cluster at 400-500 Ma, while one sample (9 Ma) contains zircon ages similar to those of Oligocene samples, indicating tectonic uplift of the southern QSOB in the middle-late Miocene, which is also recorded by the sedimentary transition from fluvial to alluvial fan. Based on these findings and those of previous studies, we suggest that the entire QSOB has undergone multistage tectonic events since the early Cenozoic due to far-field effects associated with the India-Eurasia plate collision and the continued convergence.
关键词	ALTYN-TAGH FAULT FISSION-TRACK EVIDENCE RESOLUTION MAGNETO STRATIGRAPHY QAIDAM BASIN TECTONIC EVOLUTION XINING BASIN MIDDLE MIOCENE HEXI CORRIDOR NW CHINA NORTHEASTERN TIBET
英文关键词	Detrital zircon; Provenance; Tectonic deformation; Qilian Shan orogenic belt; Subei Basin
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000742708800002
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
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/260564
推荐引用方式 GB/T 7714	Feng, Wei,Song, Chunhui,Meng, Qingquan,et al. Cenozoic multi-stage deformation of the Qilian Shan orogenic belt, northern Tibetan Plateau: Insights from a detrital zircon provenance study of an Oligocene-Miocene intermontane basin sedimentary succession[J]. 中国科学院青藏高原研究所,2022,224.
APA	Feng, Wei.,Song, Chunhui.,Meng, Qingquan.,He, Pengju.,Fang, Xiaomin.,...&Wang, Qiaoxin.(2022).Cenozoic multi-stage deformation of the Qilian Shan orogenic belt, northern Tibetan Plateau: Insights from a detrital zircon provenance study of an Oligocene-Miocene intermontane basin sedimentary succession.JOURNAL OF ASIAN EARTH SCIENCES,224.
MLA	Feng, Wei,et al."Cenozoic multi-stage deformation of the Qilian Shan orogenic belt, northern Tibetan Plateau: Insights from a detrital zircon provenance study of an Oligocene-Miocene intermontane basin sedimentary succession".JOURNAL OF ASIAN EARTH SCIENCES 224(2022).