气候变化领域集成服务门户(CCPortal): Final suture of the Palaeo-Asian Ocean domain: Insights from the geochemistry and geochronology of the early to Middle Permian Elitu Formation volcanics

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DOI	10.1016/j.lithos.2024.107577
	Final suture of the Palaeo-Asian Ocean domain: Insights from the geochemistry and geochronology of the early to Middle Permian Elitu Formation volcanics
	Tang, Jianzhou; Zhang, Shaohua; Zhang, Zhicheng; Xue, Jinzhuang; Ding, Cong
发表日期	2024
ISSN	0024-4937
EISSN	1872-6143
起始页码	472
卷号	472
英文摘要	The consumption of the Palaeo-Asian Ocean domain triggered substantial resources and environmental effects, but the final suture timing remains debated. This study presents the zircon U-Pb age and Hf-O isotope, whole-rock element and Sr-Nd-Pb isotope data from the Elitu Formation trachyandesite and rhyolitic tuff in the Bainaimiao arc belt. The zircon U-Pb ages (260-280 Ma) indicate that the Elitu Formation volcanism erupted at the Kungurian to Capitanian. Trachyandesites exhibit an arc-like whole-rock trace element composition and have enriched Sr-Nd-Pb isotopic composition (ISr(t) = 0.7062-0.7065; epsilon Nd(t) = -8.8 to -9.4; (206Pb/204Pb)t = 17.14-17.31) and high zircon 618O (6.08%o-7.59%o) values, which are derived from the partial melting of the lithosphere mantle metasomatised by ancient sediment-derived melts. Rhyolitic tuffs have variable epsilon Hf(t) (-7.15 to +10.47) and low 618O (4.99%o-6.21%o) values and exhibit affinities with I-type felsic rocks. They mainly originate from the partial melting of the basement of the Bainaimiao arc belt. Our compiled geochemical and geochronological data indicate that there were significant differences between the Early to Middle Permian Elitu Formation volcanic rocks and intrusive counterparts and the Early to Middle Triassic magmatic rocks from the Bainaimiao arc belt, and the Late Permian was the key tectonic transition period. The Late Permian transition was compatible with the regional crustal-shortening deformation, greenschist facies metamorphism and shift of deposition environment. This study argues that the Elitu Formation volcanism should be subduction-related and predate the final suture of the Palaeo-Asian Ocean domain at the Changhsingian. The suture of the Palaeo-Asian Ocean domain was not the original trigger of the Kungurian climate change in the North China Craton.
英文关键词	Geochemistry; Geochronology; Elitu Formation; Final closure; Palaeo-Asian Ocean domain
语种	英语
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
WOS类目	Geochemistry & Geophysics ; Mineralogy
WOS记录号	WOS:001219415500001
来源期刊	LITHOS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304102
作者单位	Xi'an University of Science & Technology; Peking University; Peking University; Xi'an Shiyou University; Peking University; Peking University
推荐引用方式 GB/T 7714	Tang, Jianzhou,Zhang, Shaohua,Zhang, Zhicheng,et al. Final suture of the Palaeo-Asian Ocean domain: Insights from the geochemistry and geochronology of the early to Middle Permian Elitu Formation volcanics[J],2024,472.
APA	Tang, Jianzhou,Zhang, Shaohua,Zhang, Zhicheng,Xue, Jinzhuang,&Ding, Cong.(2024).Final suture of the Palaeo-Asian Ocean domain: Insights from the geochemistry and geochronology of the early to Middle Permian Elitu Formation volcanics.LITHOS,472.
MLA	Tang, Jianzhou,et al."Final suture of the Palaeo-Asian Ocean domain: Insights from the geochemistry and geochronology of the early to Middle Permian Elitu Formation volcanics".LITHOS 472(2024).