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SIMS U-Pb rutile age of low-temperature eclogites from southwestern Chinese Tianshan, NW China

文献类型：期刊论文

作者Li, Qiu-li1; Lin, Wei1; Su, Wen1; Li, Xian-hua1; Shi, Yong-hong2; Liu, Yu1; Tang, Guo-qiang1
刊名LITHOS
出版日期2011-02-01
卷号122期号:1-2页码:76-86
关键词SIMS Rutile U-Pb age Eclogite Southwestern Chinese Tianshan Central Asia Orogenic Belt
ISSN号0024-4937
DOI10.1016/j.lithos.2010.11.007
文献子类Article
英文摘要The geological evolution in the southwestern Chinese Tianshan orogen in NW China is poorly understood because of controversial geochronological results of the low-temperature eclogites. It is likely due to Sm-Nd and Rb-Sr isotopic disequilibrium in different mineral fractions, excess Ar-40 in the high-pressure K-bearing minerals, and multi-stage growths of zircon in U-Pb system. Rutile, as a typical eclogite-facies mineral with high U/Pb ratio, is a feasible candidate to constrain the eclogite-facies metamorphic event. In this study, we measured U-Pb rutile age data using SIMS (Cameca IMS 1280) for low-temperature eclogites from southwestern Chinese Tianshan orogen, NW China. We demonstrate that SIMS is a powerful technique for insitu U-Pb dating of rutile with U content as low as 1 ppm. SIMS U-Pb rutile dating yielded an age of 318 +/- 7 Ma, which may record the time when the rocks cooled down to the closure temperature of Pb in rutile (ca. 500 degrees C), but should be very close to the time of eclogite-facies metamorphism in terms of common fast exhumation of coesite-bearing eclogite. This new proof strongly suggests a late Carboniferous collision between Kazakhstan-Yili block and Central Tianshan microcontinent. (c) 2010 Elsevier B.V. All rights reserved.
WOS关键词ULTRAHIGH-PRESSURE METAMORPHISM ; COESITE-BEARING ECLOGITE ; ASIAN OROGENIC BELT ; HP-LT ROCKS ; WESTERN TIANSHAN ; SOUTH TIANSHAN ; SM-ND ; NORTHWESTERN CHINA ; COOLING HISTORY ; RB-SR
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000287347100006
出版者ELSEVIER SCIENCE BV
资助机构Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; NSCF(40872142 ; NSCF(40872142 ; NSCF(40872142 ; NSCF(40872142 ; 40872059) ; 40872059) ; 40872059) ; 40872059) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; NSCF(40872142 ; NSCF(40872142 ; NSCF(40872142 ; NSCF(40872142 ; 40872059) ; 40872059) ; 40872059) ; 40872059) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; NSCF(40872142 ; NSCF(40872142 ; NSCF(40872142 ; NSCF(40872142 ; 40872059) ; 40872059) ; 40872059) ; 40872059) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; Chinese National 973 Project(2009CB825008) ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; NSCF(40872142 ; NSCF(40872142 ; NSCF(40872142 ; NSCF(40872142 ; 40872059) ; 40872059) ; 40872059) ; 40872059)
源URL[http://ir.iggcas.ac.cn/handle/132A11/74324]  
专题中国科学院地质与地球物理研究所
通讯作者Lin, Wei
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Hefei Univ Technol, Dept Geol, Sch Resource & Environm Engn, Hefei 230009, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Li, Qiu-li,Lin, Wei,Su, Wen,et al. SIMS U-Pb rutile age of low-temperature eclogites from southwestern Chinese Tianshan, NW China[J]. LITHOS,2011,122(1-2):76-86.
APA Li, Qiu-li.,Lin, Wei.,Su, Wen.,Li, Xian-hua.,Shi, Yong-hong.,...&Tang, Guo-qiang.(2011).SIMS U-Pb rutile age of low-temperature eclogites from southwestern Chinese Tianshan, NW China.LITHOS,122(1-2),76-86.
MLA Li, Qiu-li,et al."SIMS U-Pb rutile age of low-temperature eclogites from southwestern Chinese Tianshan, NW China".LITHOS 122.1-2(2011):76-86.

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来源：地质与地球物理研究所

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