气候变化领域集成服务门户(CCPortal): Evolution of the Neo-Tethys traced by Late Triassic to Early Cretaceous marine remnants in the eastern segment of the Yarlung-Tsangpo suture zone, southern Tibet

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DOI	10.1016/j.jseaes.2024.106090
	Evolution of the Neo-Tethys traced by Late Triassic to Early Cretaceous marine remnants in the eastern segment of the Yarlung-Tsangpo suture zone, southern Tibet
	He, Zhihao; Li, Xin; Li, Yalin; Matsuoka, Atsushi; Luo, Hui; Cui, Xiaohui; Cheng, Jianbo
发表日期	2024
ISSN	1367-9120
EISSN	1878-5786
起始页码	265
卷号	265
英文摘要	Widely distributed siliceous m & eacute;langes in the Yarlung-Tsangpo suture zone preserve significant information of the Neo-Tethys and subduction-accretion processes. Similar ophiolites and siliceous m & eacute;langes are well exposed in the Xigaze and Zedong areas, however, their relationship including age assignments, depositional environments, and accretionary process remains vague. Based on radiolarian biostratigraphy (56 species belonging to 35 genera), black cherts from the Carnian to the Norian (Late Triassic), red cherts from the Aalenian to Bathonian (Middle Jurassic), and siliceous mudstones of the Berriasian (Early Cretaceous) are distinguished from siliceous m & eacute;lange in the Zedong area. Values of Al/(Al + Fe + Mn) indicate that the siliceous rocks are biogenic silica derived. The diagrams of Al2O3/(Al2O3 + Fe2O3) vs Fe2O3/TiO2 and Al2O3/(Al2O3 + Fe2O3) vs La-N/Ce-N indicate siliceous rocks were deposited far from the ridge. Weak positive Ce anomaly and low ratio of La-N/Ce-N indicate that siliceous rocks were deposited in a deep-sea basin proximal to terrigenous sources. Comprehensive summary of studies on Bainang siliceous m & eacute;lange, Xigaze ophiolite, Zedong ophiolite, and Zedong siliceous m & eacute;lange reconstructs the Ocean Plate Stratigraphy (OPS) and the evolution of the Neo-Tethys since the Late Triassic till the Early Cretaceous. M & eacute;langes in Xigaze and Zedong were formed in different intra-oceanic subduction-accretion systems at different times in the Neo-Tethys Ocean during the Cretaceous.
英文关键词	Melange; Ocean Plate Stratigraphy; Radiolarians; Geochemistry; Late Triassic; Jurassic; Early Cretaceous
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001206432400001
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299441
作者单位	China University of Geosciences; Chinese Academy of Sciences; Niigata University; Linyi University
推荐引用方式 GB/T 7714	He, Zhihao,Li, Xin,Li, Yalin,et al. Evolution of the Neo-Tethys traced by Late Triassic to Early Cretaceous marine remnants in the eastern segment of the Yarlung-Tsangpo suture zone, southern Tibet[J],2024,265.
APA	He, Zhihao.,Li, Xin.,Li, Yalin.,Matsuoka, Atsushi.,Luo, Hui.,...&Cheng, Jianbo.(2024).Evolution of the Neo-Tethys traced by Late Triassic to Early Cretaceous marine remnants in the eastern segment of the Yarlung-Tsangpo suture zone, southern Tibet.JOURNAL OF ASIAN EARTH SCIENCES,265.
MLA	He, Zhihao,et al."Evolution of the Neo-Tethys traced by Late Triassic to Early Cretaceous marine remnants in the eastern segment of the Yarlung-Tsangpo suture zone, southern Tibet".JOURNAL OF ASIAN EARTH SCIENCES 265(2024).