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    SHRIMP U-Pb zircon dating on Nyainquetanglha granite in central Lhasa block [查看] LIUQishengWUZhenhanHUDaogongYEPeishengJIANGWanWANGYanbinZHANGHancheng
    SHRIMP U-Pb zircon dating of the uppermost Cretaceous Furao Formation near the Heilong River:An age chosest to the KT boundary [查看] LIXianhuaLIWuxianCHENPeijiWANXiaoqiaoLIGangSONGBiaoJIANGJianhongLIUJicaiYINDeshunYANWei
    SHRIMP U-Pb zircon age of the Jinchuan ultramafic intrusion and its geological significance [查看] LIXianhuaSULiSONGBiaoLIUDunyi
    SHRIMP U-Pb zircon ages for the UHP metamorphosed granitoid gneiss in Altyn Tagh and their geological singificance [查看] ZHANGAndaLIULiangSUNYongCHENDanlingWANGYanLUOJinhai
    Mineralizing age of the Rushan lode gold deposit in the Jiaodong PeninsulaSHRIMP U-Pb dating on hydrothermal zircon [查看] HUFangfangFANHongruiYANGJinhuiWANYushengLIUDunyiZHAIMingguoJINChengwei
    Fluid inclusions hidden in coesite-bearing zircons in ultrahigh-pressure metamorphic rocks from southwestern Sulu terrane in eastern China [查看] LIUFulaiXUZhiqin
    Abstract Primary fluid inclusions, together with coesite mineral inclusions, are identified in the same zircon domains by laser Raman spectroscopy, cathodoluminescence (CL)image and micro-texture analysis in paragneiss and eclogite from the main drilling hole of Chinese Continental Scientific Drilling Project in southwestern Sulu terrane. Most fluid inclusions are characterized by CO2 (gas)-H2O (liquid) two-phase, a few by H2O one-phase liquid inclusions. These features indicate that the eclogite and its country-rocks may be located in the “wet system” rather than in the “dry system”during UHP metamorphism. SHRIMP U-Pb dating indicates that the timing of trapping the fluid and coesite inclusions in metamorphic zircon domains is about 233.7 ± 4.3 Ma, which may represent the age of zircon growth in the stage of pressure decrease but temperature increase during the retrograde period of UHP metamorphism thus indicating the fluid activity still under the UHP conditions. The zircons further overgrew at about 213.2 ± 5.2 Ma in response to amphibolite-facies retrogression. Therefore, fluid activity in the Sulu UHP metamorphic rocks principally occurred during the exhumation of UHP slab in the Middle to Late Triassic.The present results not only provide insight into the fluid property and fluid-rock interaction mechanism in the Sulu-Dabie UHP terrane, but also present a new means to exactly identify the primary fluid inclusions preserved in zircons from the UHP metamorphic rocks.
    Emplacement age and tectonic implications of the Xilinhot A-type granite in Inner Mongolia,China [查看] SHIGuanghaiMIAOLaichengZHANGFuqingJIANPingFANWeimingLIUDunyi
    Zircon SHRIMP Dating for the Weiya Pluton,Eastern TianshanIts Geological Implications [查看] ZHANGZunzhongGULianxingWUChangzhiLIWeiqiangXIAihuaWANGShuo
    U-Pb dating of zircon from the bed parallel anatectic graniteic intrusion in the Baban group in Hainan Island and the tectonic implication [查看] DINGShijiangHUJianminSONGBiaoCHENMulunXIEShengzhouFANYuan
    Timg of Magma Mixing in the Gangdise Magmatic Belt during the India-Asia Collisionziron SHRIMP U-Pb Dating [查看] MOXuanxueDONGGuochenZHAOZhidanGUOTieyingWANGLiangliangCHENTao
    Abstract Abundant mafic microgranular enclaves (MMEs) extensively distribute in granitoids in the Gangdise giant magmatic belt, within which the Qüxü batholith is the most typical MME-bearing pluton. Systematic sampling for granodioritic host rock, mafic microgranular enclaves and gabbro nearby at two locations in the Qüxü batholith, and subsequent zircon SHRIMP II U-Pb dating have been conducted. Two sets of isotopic ages for granodioritic host rock,mafic microgranular enclaves and gabbro are 50.4±1.3 Ma, 51.2±1.1 Ma, 47.0±l Ma and 49.3±1.7 Ma, 48.9±1.1 Ma,49.9±1.7 Ma, respectively. It thus rules out the possibilities of mafic microgranular enclaves being refractory residues after partial melting of magma source region, or being xenoliths of country rocks or later intrusions.Therefore, it is believed that the three types of rocks mentioned above likely formed in the same magmatic event, i.e., they formed by magma mixing in the Eocene (c. 50 Ma). Compositionally, granitoid host rocks incline towards acidic end member involved in magma mixing, gabbros are akin to basic end member and mafic microgranular enclaves are the incompletely mixed basic magma clots trapped in acidic magma. The isotopic dating also suggested that huge-scale magma mixing in the Gangdise belt took place 15-20 million years after the initiation of the India-Asia continental collision, genetically related to the underplating of subduction-collision-induced basic magma at the base of the continental crust. Underplating and magma mixing were likely the main process of mass-energy exchange between the mantle and the crust during the continental collision, and greatly contributed to the accretion of the continental crust, the evolution of the lithosphere and related mineralization beneath the portion of the Tibetan Plateau to the north of the collision zone.
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