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Paleozoic ophiolitic melanges from the South Tianshan Orogen, NW China: Geological, geochemical and geochronological implications for the geodynamic setting

文献类型：期刊论文

作者Jiang, Tuo1,2; Gao, Jun1; Klemd, Reiner3; Qian, Qing1; Zhang, Xi1,2; Xiong, Xianming1,4; Wang, Xinshui1,2; Tan, Zhou1,2; Chen, Bangxue5
刊名TECTONOPHYSICS
出版日期2014-02-04
卷号612页码:106-127
关键词Ophiolitic melange Geochemistry Geochronology Palaeozoic tectonic evolution South Tianshan Orogen
ISSN号0040-1951
DOI10.1016/j.tecto.2013.11.038
文献子类Article
英文摘要Two ophiolitic melange belts, the South Central Tianshan Ophiolite Belt (SCTOB) and the South Tianshan Ophiolite Belt (STUB), extend almost parallel to the Chinese South Tianshan Orogen - the southernmost part of the Central Asian Orogenic Belt (CAOB). The SCTOB occurs interlayered in the South Central Tianshan Suture Zone, the STOB as exotic blocks in Palaeozoic sedimentary strata. However, their tectonic settings and ages, which are crucial for understanding the formation of the CAOB, are still controversially discussed. In order to better understand these geological problems, geological, geochemical and geochronological investigations were conducted on the Guluogou (SCTOB) as well as on the Serikeyayilake and Aertengkesi ophiolitic m langes (STOB). The ophiolitic suites are composed of basalts, gabbros and mantle peridotites. Laser ablation ICP-MS (LA-ICP-MS) U-Pb zircon ages of 334 +/- 5 Ma and 332 +/- 7 Ma were obtained for the Guluogou gabbros, while SHRIMP U-Pb zircon ages of 423 +/- 10 Ma and 423 +/- 4 Ma were determined for the Serikeyayilake and Aertengkesi gabbros. The mineral composition of the mantle peridotites and the geochemical characteristics of the basalts suggest a mid-ocean ridge (MOR) type affinity for the Guluogou ophiolite and a SSZ type affinity for the Serikeyayilake and Aertengkesi ophiolites. The present data, combined with previously published results, indicate that the STUB may have been derived from a forearc rifting setting that existed during the early Silurian to the early Carboniferous (ca. 439-356 Ma), whereas the SCTOB may represent fragments of a normal wide ocean that lasted to the early Carboniferous (ca. 332 Ma). (C) 2013 Elsevier B.V. All rights reserved.
WOS关键词U-PB GEOCHRONOLOGY ; CARBONIFEROUS VOLCANIC-ROCKS ; DEVONIAN GRANITIC INTRUSIONS ; ND ISOTOPE SYSTEMS ; WESTERN TIANSHAN ; TIEN-SHAN ; TECTONIC EVOLUTION ; CENTRAL-ASIA ; SOUTHWESTERN TIANSHAN ; NORTHWESTERN CHINA
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000331157300009
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China(41390445 ; National Natural Science Foundation of China(41390445 ; China Geological Survey(1212010911070) ; China Geological Survey(1212010911070) ; Deutsche Forschungsgemeinschaft(KL 692/17-2, 3) ; Deutsche Forschungsgemeinschaft(KL 692/17-2, 3) ; 41025008) ; 41025008) ; National Natural Science Foundation of China(41390445 ; National Natural Science Foundation of China(41390445 ; China Geological Survey(1212010911070) ; China Geological Survey(1212010911070) ; Deutsche Forschungsgemeinschaft(KL 692/17-2, 3) ; Deutsche Forschungsgemeinschaft(KL 692/17-2, 3) ; 41025008) ; 41025008) ; National Natural Science Foundation of China(41390445 ; National Natural Science Foundation of China(41390445 ; China Geological Survey(1212010911070) ; China Geological Survey(1212010911070) ; Deutsche Forschungsgemeinschaft(KL 692/17-2, 3) ; Deutsche Forschungsgemeinschaft(KL 692/17-2, 3) ; 41025008) ; 41025008) ; National Natural Science Foundation of China(41390445 ; National Natural Science Foundation of China(41390445 ; China Geological Survey(1212010911070) ; China Geological Survey(1212010911070) ; Deutsche Forschungsgemeinschaft(KL 692/17-2, 3) ; Deutsche Forschungsgemeinschaft(KL 692/17-2, 3) ; 41025008) ; 41025008)
源URL[http://ir.iggcas.ac.cn/handle/132A11/85009]  
专题中国科学院地质与地球物理研究所
通讯作者Gao, Jun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Erlangen Nurnberg, GeoZentrum Nordbayern, D-91054 Erlangen, Germany
4.Guizhou Univ, Coll Resource & Environm Engn, Guiyang 550025, Peoples R China
5.Xinjiang Univ, Sch Geol & Explorat, Urumqi 830046, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Tuo,Gao, Jun,Klemd, Reiner,et al. Paleozoic ophiolitic melanges from the South Tianshan Orogen, NW China: Geological, geochemical and geochronological implications for the geodynamic setting[J]. TECTONOPHYSICS,2014,612:106-127.
APA Jiang, Tuo.,Gao, Jun.,Klemd, Reiner.,Qian, Qing.,Zhang, Xi.,...&Chen, Bangxue.(2014).Paleozoic ophiolitic melanges from the South Tianshan Orogen, NW China: Geological, geochemical and geochronological implications for the geodynamic setting.TECTONOPHYSICS,612,106-127.
MLA Jiang, Tuo,et al."Paleozoic ophiolitic melanges from the South Tianshan Orogen, NW China: Geological, geochemical and geochronological implications for the geodynamic setting".TECTONOPHYSICS 612(2014):106-127.

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来源：地质与地球物理研究所

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