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Neoproterozoic mafic dyke swarms at the northern margin of the Tarim Block, NW China: Age, geochemistry, petrogenesis and tectonic implications

文献类型：期刊论文

作者Zhang, Chuan-Lin1,2; Li, Zheng-Xiang3; Li, Xian-Hua3; Ye, Hai-Min4
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2009-06-15
卷号35期号:2页码:167-179
关键词Mafic dyke swarm Tarim Petrogenesis Rodinia breakup
ISSN号1367-9120
DOI10.1016/j.jseaes.2009.02.003
文献子类Article
英文摘要Zircon and baddeleyite U-Pb ages and geochemistry of the Neoproterozoic mafic dyke swarms at the northern margin of the Tarim Block, NW China, are reported here to decipher the regional Neoproterozoic tectonic evolution. The mafic dyke swarm in Aksu and the mafic dyke swarm in Quruqtagh were emplaced at 759 +/- 7 and 773 +/- 3 Ma, respectively. The samples from Quruqtagh dykes are tholeiitic in major element compositions, enriched in LILE and LREE and depleted in HFSE and HREE. Isotopically, they are characterized by large ranges of epsilon Nd(t) values (from -7.1 to 1.8) and initial (87)Sr/(86)Sr ratios (from 0.699 to 0.708). The Aksu mafic dykes share most geochemical characteristics of the Quruqtagh mafic dykes except that they are more highly evolved and with epsilon Nd(t) values ranging from -6.4 to -5.8. Geochemical features suggest that the Aksu mafic dykes and Quruqtagh mafic dykes were likely crystallized from a similar parental magma (possibly of high MgO contents) derived from a metasomatized SCLM (sub-continental lithosphere mantle) in a non-orogenic setting. In combination with other reported Neoproterozoic igneous rocks throughout the Tarim Block, there appear to be two major phases of Neoproterozoic igneous activities at ca. 820-800 and ca. 780-750 Ma, respectively. These two phases of igneous activities were concurrent with those in many other Rodinian continents and were most likely related to mantle plume activities during the break-up of the supercontinent Rodinia. (C) 2009 Elsevier Ltd. All rights reserved.
WOS关键词U-PB ZIRCON ; DRILL-CORE SAMPLES ; SOUTH CHINA ; CONTINENTAL BREAKUP ; MANTLE SUPERPLUME ; NORTHWEST CHINA ; MAGMATIC EVENT ; VOLCANIC-ROCKS ; FLOOD BASALTS ; RODINIA
WOS研究方向Geology
语种英语
WOS记录号WOS:000266054200004
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Science Foundation of China(40772123 ; National Science Foundation of China(40772123 ; Programme of Excellent Young Scientists of the Ministry of Land and Resources ; Programme of Excellent Young Scientists of the Ministry of Land and Resources ; Australian Research Council(DP0770228) ; Australian Research Council(DP0770228) ; 40721063) ; 40721063) ; National Science Foundation of China(40772123 ; National Science Foundation of China(40772123 ; Programme of Excellent Young Scientists of the Ministry of Land and Resources ; Programme of Excellent Young Scientists of the Ministry of Land and Resources ; Australian Research Council(DP0770228) ; Australian Research Council(DP0770228) ; 40721063) ; 40721063) ; National Science Foundation of China(40772123 ; National Science Foundation of China(40772123 ; Programme of Excellent Young Scientists of the Ministry of Land and Resources ; Programme of Excellent Young Scientists of the Ministry of Land and Resources ; Australian Research Council(DP0770228) ; Australian Research Council(DP0770228) ; 40721063) ; 40721063) ; National Science Foundation of China(40772123 ; National Science Foundation of China(40772123 ; Programme of Excellent Young Scientists of the Ministry of Land and Resources ; Programme of Excellent Young Scientists of the Ministry of Land and Resources ; Australian Research Council(DP0770228) ; Australian Research Council(DP0770228) ; 40721063) ; 40721063)
源URL[http://ir.iggcas.ac.cn/handle/132A11/71120]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang, Chuan-Lin
作者单位1.Nanjing Inst Geol & Mineral Resources, Nanjing 210016, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Peoples R China
3.Curtin Univ Technol, Dept Appl Geol, Inst Geosci Res, Perth, WA 6845, Australia
4.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		 Zhang, Chuan-Lin,Li, Zheng-Xiang,Li, Xian-Hua,et al. Neoproterozoic mafic dyke swarms at the northern margin of the Tarim Block, NW China: Age, geochemistry, petrogenesis and tectonic implications[J]. JOURNAL OF ASIAN EARTH SCIENCES,2009,35(2):167-179.
APA Zhang, Chuan-Lin,Li, Zheng-Xiang,Li, Xian-Hua,&Ye, Hai-Min.(2009).Neoproterozoic mafic dyke swarms at the northern margin of the Tarim Block, NW China: Age, geochemistry, petrogenesis and tectonic implications.JOURNAL OF ASIAN EARTH SCIENCES,35(2),167-179.
MLA Zhang, Chuan-Lin,et al."Neoproterozoic mafic dyke swarms at the northern margin of the Tarim Block, NW China: Age, geochemistry, petrogenesis and tectonic implications".JOURNAL OF ASIAN EARTH SCIENCES 35.2(2009):167-179.

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来源：地质与地球物理研究所

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