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Late Permian high-Mg andesite and basalt association from northern Liaoning, North China: Insights into the final closure of the Paleo-Asian ocean and the orogen-craton boundary

文献类型：期刊论文

作者Yuan, Lingling1,2; Zhang, Xiaohui1; Xue, Fuhong3; Lu, Yinghuai4; Zong, Keqing5
刊名LITHOS
出版日期2016-08-01
卷号258页码:58-76
关键词High-Mg andesite Metasomatism Slab breakoff Late Permian Central Asian Orogenic Belt North China
DOI10.1016/j.lithos.2016.04.024
文献子类Article
英文摘要High-Mg andesites (HMAs) and related basalts constitute a volumetrically minor, but genetically important occurrence along most convergent plate margins of various ages on Earth. The details of their petrogenesis can contain critical information for resolving essential geodynamic and crustal evolutionary issues. This zircon U-Pb dating and geochemical study documents the late Permian metamorphosed high-Mg basaltic to andesitic suite from Kaiyuan of northern Liaoning, North China. These rocks feature SiO2 contents ranging from 48.7 to 63.2 wt.%, high Mg-# values of 63-75, an enrichment in large-ion lithophile elements (LILE), and depletion in high field strength elements (HFSE). They possess whole-rock initial Sr-87/Sr-86 ratios of 0.70417-0.70457, epsilon(Nd)(t) values from -0.4 to 5.0, and epsilon(Hf)(t) values from 5.1 to 11, as well as zircon epsilon(Hf)(t) values from -9.4 to 0.4. These features indicate that their petrogenesis most likely involved precursory metasomatism of mantle peridotites by melts from subduction-related sediments, and subsequent partial melting. With a depleted mantle source and possible tectonic link to post-subduction slab break-off, the Kaiyuan suite could present a spatial reference not only for defining the demarcation line between the North China craton (NCC) and the Central Asian Orogenic belt (CAOB) in the region, but also for tracing the final location of the cryptic suturing zone of the Paleo-Asian Ocean. Synthesizing the suite with coeval igneous episodes as well as concomitant metamorphic events along the Solonker-Xra Moron-Changchun zone leads to the characterization of the eventual closure of the Paleo-Asian Ocean within a double-sided subduction system during late Permian-Early Triassic. (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词SETOUCHI VOLCANIC BELT ; U-PB GEOCHRONOLOGY ; ARABIAN-NUBIAN SHIELD ; ISUA GREENSTONE-BELT ; SOLONKER SUTURE ZONE ; INNER-MONGOLIA ; TECTONIC IMPLICATIONS ; CONTINENTAL-CRUST ; GEOCHEMICAL EVIDENCE ; SOUTHWEST JAPAN
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000378369200004
资助机构National Natural Science Foundation of China(41390443) ; National Natural Science Foundation of China(41390443) ; National Natural Science Foundation of China(41390443) ; National Natural Science Foundation of China(41390443) ; Major State Basic Research Program of the People's Republic of China(2012CB416603) ; Major State Basic Research Program of the People's Republic of China(2012CB416603) ; Major State Basic Research Program of the People's Republic of China(2012CB416603) ; Major State Basic Research Program of the People's Republic of China(2012CB416603) ; NNSFC(41573031 ; NNSFC(41573031 ; NNSFC(41573031 ; NNSFC(41573031 ; 41173043) ; 41173043) ; 41173043) ; 41173043) ; National Natural Science Foundation of China(41390443) ; National Natural Science Foundation of China(41390443) ; National Natural Science Foundation of China(41390443) ; National Natural Science Foundation of China(41390443) ; Major State Basic Research Program of the People's Republic of China(2012CB416603) ; Major State Basic Research Program of the People's Republic of China(2012CB416603) ; Major State Basic Research Program of the People's Republic of China(2012CB416603) ; Major State Basic Research Program of the People's Republic of China(2012CB416603) ; NNSFC(41573031 ; NNSFC(41573031 ; NNSFC(41573031 ; NNSFC(41573031 ; 41173043) ; 41173043) ; 41173043) ; 41173043)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53411]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, POB 9825, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Inner Mongolia Nonferrous Geol Min Ltd Liabil Co, Hohhot 010010, Peoples R China
4.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
5.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Yuan, Lingling,Zhang, Xiaohui,Xue, Fuhong,et al. Late Permian high-Mg andesite and basalt association from northern Liaoning, North China: Insights into the final closure of the Paleo-Asian ocean and the orogen-craton boundary[J]. LITHOS,2016,258:58-76.
APA Yuan, Lingling,Zhang, Xiaohui,Xue, Fuhong,Lu, Yinghuai,&Zong, Keqing.(2016).Late Permian high-Mg andesite and basalt association from northern Liaoning, North China: Insights into the final closure of the Paleo-Asian ocean and the orogen-craton boundary.LITHOS,258,58-76.
MLA Yuan, Lingling,et al."Late Permian high-Mg andesite and basalt association from northern Liaoning, North China: Insights into the final closure of the Paleo-Asian ocean and the orogen-craton boundary".LITHOS 258(2016):58-76.

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来源：地质与地球物理研究所

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