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Ion Microprobe U-Pb Age and Zr-in-Rutile Thermometry of Rutiles from the Daixian Rutile Deposit in the Hengshan Mountains, Shanxi Province, China

文献类型：期刊论文

作者Shi, Guanghai1,2; Li, Xianhua2; Li, Qiuli2; Chen, Zhenyu3; Deng, Jun1; Liu, Yingxin1; Kang, Zhijuan1; Pang, Ercheng4; Xu, Yongjing1,4; Jia, Xiuming5
刊名ECONOMIC GEOLOGY
出版日期2012-05-01
卷号107期号:3页码:525-535
ISSN号0361-0128
文献子类Article
英文摘要The Daixian rutile deposit is located in the Hengshan Mountains in the Trans-North China Orogen; it is considered to be one of the largest rutile deposits in China, with 6 million metric tons (Mt) of contained titanium. Most of the ruffle ores are hosted in garnet-free anthophyllite gneiss with minor Mg hornblende, feldspar, quartz, phlogopite, rutile, zircon, and titanite. Rutile grains are dihedral, 0.02 to 0.50 mm in size, contain 98.649 to 99.784 wt % TiO2, and form chains, thin layers along the foliation, and dense aggregates. Ruffles are compositionally homogeneous and contain no detectable mineral inclusions except local ilmenite lamellae and zircon. Crystallization temperatures of the rutile are estimated at similar to 640 degrees C at 0.7 GPa, and similar to 647 degrees C without pressure calibration according to the Zr-in-rutile thermometer, recording amphibolite facies metamorphism of an intermediate P/T ratio series. Variations in Nb versus Cr in rutiles indicate a connection of the ores to mafic protolith; not a pelitic rock derived from aluminous sedimentary rocks. Si MS U-Pb analyses of rutiles from the deposit yield a mean Pb-207/Pb-207 age of 1780.2 +/- 9.6 Ma. Considering the closure temperature (up to similar to 650 degrees C), grain sizes and recrystallization of the rutile, this age is more likely to represent closure and/or recrystallization time rather than peak metamorphism period, so the rutile deposit formed not younger than similar to 1780 Ma. This unique garnet-free rutile deposit was metamorphosed from mafic rocks in amphibolite fades during the Paleoproterozoic or Archean, being distinct from any other metamorphic rutile deposits, such as the known eclogite-related types.
WOS关键词WUTAISHAN GREENSTONE-BELT ; HIGH-PRESSURE GRANULITES ; FLOOD-BASALT PROVINCE ; CENTRAL OROGENIC BELT ; TECTONIC EVOLUTION ; METAMORPHIC RUTILE ; CONTINENTAL GROWTH ; GRADE METAMORPHISM ; WESTERN-AUSTRALIA ; OPHIOLITIC ROCKS
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000302441800007
出版者SOC ECONOMIC GEOLOGISTS, INC
资助机构National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; National Science Foundation of China(90914008) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048) ; Fundamental Research Funds for the Central Universities(2001YXL048)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84706]  
专题中国科学院地质与地球物理研究所
通讯作者Shi, Guanghai
作者单位1.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China
4.Shanxi Geol Explorat Bur, Geol Dept 217, Datong 037008, Peoples R China
5.Taiyuan Univ Technol, Taiyuan 030024, Shanxi, Peoples R China
推荐引用方式
GB/T 7714		 Shi, Guanghai,Li, Xianhua,Li, Qiuli,et al. Ion Microprobe U-Pb Age and Zr-in-Rutile Thermometry of Rutiles from the Daixian Rutile Deposit in the Hengshan Mountains, Shanxi Province, China[J]. ECONOMIC GEOLOGY,2012,107(3):525-535.
APA Shi, Guanghai.,Li, Xianhua.,Li, Qiuli.,Chen, Zhenyu.,Deng, Jun.,...&Jia, Xiuming.(2012).Ion Microprobe U-Pb Age and Zr-in-Rutile Thermometry of Rutiles from the Daixian Rutile Deposit in the Hengshan Mountains, Shanxi Province, China.ECONOMIC GEOLOGY,107(3),525-535.
MLA Shi, Guanghai,et al."Ion Microprobe U-Pb Age and Zr-in-Rutile Thermometry of Rutiles from the Daixian Rutile Deposit in the Hengshan Mountains, Shanxi Province, China".ECONOMIC GEOLOGY 107.3(2012):525-535.

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来源：地质与地球物理研究所

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