Geochemical and geochronological studies of the Alegedayi Ophiolitic Complex and its implication for the evolution of the Chinese Altai
文献类型：期刊论文
| 作者 | Wong, Kenny1; Sun, Min1; Zhao, Guochun1; Yuan, Chao2; Xiao, Wenjiao3 |
| 刊名 | GONDWANA RESEARCH
 |
| 出版日期 | 2010-09-01 |
| 卷号 | 18期号:2-3页码:438-454 |
| 关键词 | Altai Central Asian Orogenic Belt Accretion Geochemistry Ophiolitic complex Geochronology |
| ISSN号 | 1342-937X |
| DOI | 10.1016/j.gr.2010.01.010 |
| 文献子类 | Article |
| 英文摘要 | The Alegedayi Ophiolitic Complex (AOC) was discovered in the northwestern part of Altai, Xinjiang, China. Strips of mafic rocks including gabbro, diabase, pillow basalt and pyroxenite, all deformed, mostly underwent low-grade metamorphism, are intercalated with marine-facies sedimentary strata consisting of shale, siltstone and chert. SHRIMP zircon dating of a metagabbro sample gave an age of 439+/-17 Ma. In terms of whole-rock geochemistry, the AOC is composed of three distinct groups. Whereas the majority has transitional or enriched mid-ocean ridge basalt (T-/E-MORB) affinity, varieties with oceanic island basalt (OIB) and supra-subduction zone (SSZ) affinities were also identified. Our data show that the petrogenesis of this mafic complex involved interaction among depleted mantle, enriched component, recycled sediments, slab-derived fluid, and metasomatized mantle wedge. Taking into account the coeval adakites and high-Mg rocks to the southwest and a slightly older arc to the northeast, we suggest that the AOC reflects an intra-arc spreading event that occurred in response to an early Silurian ridge subduction which had profound effects on the tectonic evolution of the Chinese Altai. (C) 2010 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. |
| WOS关键词 | ASIAN OROGENIC BELT ; HIGH-FIELD-STRENGTH ; PHANEROZOIC CRUSTAL GROWTH ; BACK-ARC BASIN ; DEPLETED-MANTLE SOURCE ; MIDOCEAN RIDGE BASALT ; SLAB-WINDOW FORMATION ; ONTONG JAVA PLATEAU ; RARE-EARTH-ELEMENTS ; EAST PACIFIC RISE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000280672000011 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Hong Kong RGC(HKU7043/07P) ; Hong Kong RGC(HKU7043/07P) ; National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; GAES of Germany(G-HK030/07) ; GAES of Germany(G-HK030/07) ; Hong Kong RGC(HKU7043/07P) ; Hong Kong RGC(HKU7043/07P) ; National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; GAES of Germany(G-HK030/07) ; GAES of Germany(G-HK030/07) ; Hong Kong RGC(HKU7043/07P) ; Hong Kong RGC(HKU7043/07P) ; National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; GAES of Germany(G-HK030/07) ; GAES of Germany(G-HK030/07) ; Hong Kong RGC(HKU7043/07P) ; Hong Kong RGC(HKU7043/07P) ; National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; GAES of Germany(G-HK030/07) ; GAES of Germany(G-HK030/07) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/72606]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Sun, Min |
| 作者单位 | 1.Univ Hong Kong, Dept Earth Sci, Pokfulam, Hong Kong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wong, Kenny,Sun, Min,Zhao, Guochun,et al. Geochemical and geochronological studies of the Alegedayi Ophiolitic Complex and its implication for the evolution of the Chinese Altai[J]. GONDWANA RESEARCH,2010,18(2-3):438-454. |
| APA | Wong, Kenny,Sun, Min,Zhao, Guochun,Yuan, Chao,&Xiao, Wenjiao.(2010).Geochemical and geochronological studies of the Alegedayi Ophiolitic Complex and its implication for the evolution of the Chinese Altai.GONDWANA RESEARCH,18(2-3),438-454. |
| MLA | Wong, Kenny,et al."Geochemical and geochronological studies of the Alegedayi Ophiolitic Complex and its implication for the evolution of the Chinese Altai".GONDWANA RESEARCH 18.2-3(2010):438-454. |
入库方式： OAI收割
来源：地质与地球物理研究所
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