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  5. In-situ Zircon Hf-O Isotopic Constraints on the Late Mesozoic Magmatic Rocks in the Lower Yangtze Ri

In-situ Zircon Hf-O Isotopic Constraints on the Late Mesozoic Magmatic Rocks in the Lower Yangtze Ri

来源 :The International Conference on Continental Dynamics(2014年大陆 | 被引量 : 0次 | 上传用户：leohuo
【摘 要】
：
Late Mesozoic magmatic rocks outcrop widely in the Lower Yangtze River Belt (LYRB) of central eastern China and are genetically closely associated with Cu-Au polymetallic ore deposits.Petrogenesis and
【作 者】
：
J.Yan J.C.Xie Q.Z.Li G.F.Xing J.M.Liu X.Q.Chu X.Q.Liu Z.H.Chen 
【机 构】
：
School of Resource and Environmental Engineering,Hefei University of Technology,Hefei,230009,China
【出 处】
：
The International Conference on Continental Dynamics(2014年大陆
【发表日期】
：
2014年5期
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Late Mesozoic magmatic rocks outcrop widely in the Lower Yangtze River Belt (LYRB) of central eastern China and are genetically closely associated with Cu-Au polymetallic ore deposits.Petrogenesis and the tectonic setting of these rocks have been a long-term source of controversy.Here we report new in-situ zircon Hf-O isotopic,zircon U-Pb dating,whole-rock geochemical and Sr-Nd isotopic data of Late Mesozoic magmatic rocks in the LYRB.The Late Mesozoic magmatism can be divided into first-stage high-K calc-alkaline intrusions (148-133 Ma),second-stage shoshonitic rocks (132-127 Ma) and third-stage A-type granitoids (126-123 Ma).
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