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Geochemistry, zircon U-Pb and molybdenite Re-Os dating of the Taolaituo porphyry Mo deposit in the Central Great Hinggan Range: implications for the geodynamic evolution of northeastern China

文献类型：期刊论文

作者Wu, Chen1; Jiang, Tian1; Wu, Chu2; Li, Hanshi1,3; Li, Zheng4; Liu, Wencan1,5
刊名GEOLOGICAL JOURNAL
出版日期2016-11-01
卷号51期号:6页码:949-964
关键词Taolaituo area porphyry-type deposit zircon U-Pb dating molybdenite Re-Os ages S-Pb isotopic geochemistry A-type granites
DOI10.1002/gj.2711
文献子类Article
英文摘要The Taolaituo porphyry-type molybdenum deposit is located in the eastern Inner Mongolia Autonomous Region in China. The mineralization occurs mainly as veins, lenses and layers within the host porphyry. To better understand the link between the mineralization and the host igneous rocks, we studied samples from the underground workings and report new SHRIMP II zircon U-Pb and Re-Os molybdenite ages, and geochemical data from both the molybdenites and the porphyry granites. Five molybdenite samples yield a Re-Os isochron weighted mean age of 133.0 +/- 0.82 Ma, whereas the porphyry granitoids samples yield crystallization ages of 133 +/- 1 Ma and 130.4 +/- 1.3 Ma. The U-Pb and Re-Os ages are similar, suggesting that the mineralization is genetically related to the Early Cretaceous porphyry emplacement. Re contents of the molybdenites range from 21.74 to 42.45 ppm, with an average of 32.69 ppm, whereas delta S-34 values vary between 3.7 parts per thousand and 4.2 parts per thousand, which is typical of mantle sulphur. The Pb-206/Pb-204, Pb-207/Pb-204 and Pb-208/Pb-204 vary in the ranges of 18.276-18.385, 15.566-15.580 and 38.321-38.382, respectively. The Taolaituo Early Cretaceous granitoids are A-type granites. These observations indicate that the molybdenites and the porphyry granites were derived from a mixed source involving young accretionary materials and enriched subcontinental lithospheric mantle. A synthesis of geochronological and geological data reveals that porphyry emplacement and Mo mineralization in the Taolaituo deposit occurred contemporaneously with the Early Cretaceous tectonothermal events associated with lithospheric thinning, which was caused by delamination and subsequent upwelling of the asthenosphere associated with intra-continental extension in northeast China. Copyright (C) 2015 John Wiley & Sons, Ltd.
WOS关键词A-TYPE GRANITES ; NORTH CHINA ; NE CHINA ; INNER-MONGOLIA ; TECTONIC IMPLICATIONS ; OROGENIC BELT ; XINGAN RANGE ; CENTRAL-ASIA ; GEOLOGICAL SIGNIFICANCE ; SOUTHEASTERN AUSTRALIA
WOS研究方向Geology
语种英语
WOS记录号WOS:000390215200007
资助机构China University of Geosciences (Beijing) ; China University of Geosciences (Beijing) ; Regional Geological Survey Program in Inner Mongolia(1212011120700) ; Regional Geological Survey Program in Inner Mongolia(1212011120700) ; Comparative study of the deep structure and mineralization conditions in eastern section of the Sino-Mongolian border(1212011085490) ; Comparative study of the deep structure and mineralization conditions in eastern section of the Sino-Mongolian border(1212011085490) ; Regional Geological Survey Program in Qilian area(1212011121188) ; Regional Geological Survey Program in Qilian area(1212011121188) ; China University of Geosciences (Beijing) ; China University of Geosciences (Beijing) ; Regional Geological Survey Program in Inner Mongolia(1212011120700) ; Regional Geological Survey Program in Inner Mongolia(1212011120700) ; Comparative study of the deep structure and mineralization conditions in eastern section of the Sino-Mongolian border(1212011085490) ; Comparative study of the deep structure and mineralization conditions in eastern section of the Sino-Mongolian border(1212011085490) ; Regional Geological Survey Program in Qilian area(1212011121188) ; Regional Geological Survey Program in Qilian area(1212011121188)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53170]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
作者单位1.China Univ Geosci, Sch Earth Sci & Resources, Beijing, Peoples R China
2.China Univ Geosci, Sch Water Resources & Environm, Beijing, Peoples R China
3.Peking Univ, Sch Econ, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
5.China Univ Geosci, Inst Geol Survey, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Chen,Jiang, Tian,Wu, Chu,et al. Geochemistry, zircon U-Pb and molybdenite Re-Os dating of the Taolaituo porphyry Mo deposit in the Central Great Hinggan Range: implications for the geodynamic evolution of northeastern China[J]. GEOLOGICAL JOURNAL,2016,51(6):949-964.
APA Wu, Chen,Jiang, Tian,Wu, Chu,Li, Hanshi,Li, Zheng,&Liu, Wencan.(2016).Geochemistry, zircon U-Pb and molybdenite Re-Os dating of the Taolaituo porphyry Mo deposit in the Central Great Hinggan Range: implications for the geodynamic evolution of northeastern China.GEOLOGICAL JOURNAL,51(6),949-964.
MLA Wu, Chen,et al."Geochemistry, zircon U-Pb and molybdenite Re-Os dating of the Taolaituo porphyry Mo deposit in the Central Great Hinggan Range: implications for the geodynamic evolution of northeastern China".GEOLOGICAL JOURNAL 51.6(2016):949-964.

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来源：地质与地球物理研究所

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