| 大别山地区天堂寨花岗岩的侵位时代及地质意义 |
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| 引用本文： | 张德全,孙桂英.大别山地区天堂寨花岗岩的侵位时代及地质意义[J].岩石矿物学杂志,1990,9(1):31-36. |
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| 作者姓名： | 张德全 孙桂英 |
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| 作者单位： | 中国地质科学院地质研究所
(张德全)，中国地质科学院地质研究所(孙桂英) |
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| 摘 要： | 天堂寨片麻状花岩，多数文献将其归属前寒武纪混合花岗岩。笔者认为是岩浆冷凝结晶产物，属Iu型花岗岩。其侵位时代为早白垩世。锆石一致曲线年龄为124．7Ma。岩体侵位以后，大别山地区的抬升速率不很快，平均每年抬升0．1mm。
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| 关 键 词： | 花岗岩 侵位时代 大别山地区 前寒武纪 早白垩世 铷－锶等时线 |
Emplacement Age of theTiantangzhai Granite Massif, Dabieshan and Its Geological Significance |
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| Zhang Dequan Sun Guiying.Emplacement Age of theTiantangzhai Granite Massif, Dabieshan and Its Geological Significance[J].Acta Petrologica Et Mineralogica,1990,9(1):31-36. |
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| Authors: | Zhang Dequan Sun Guiying |
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| Abstract: | Tiantangzhai gneissis granite massif which is considered a Pre-Cambrian migmatitic granite by most references, in the authors' opinion, is product of crystallization of magma and belongs to I'u-type granite. Its emplacement age was Early Cretaceous.The concordant ages of 124.7 Ma for the zircons have been obtained. Since the emplacing of the granite, theuplifted speed of Dabieshan region is not very quick. An average, there is 0.1mm per year. |
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| Keywords: | granite emplacement age Dabieshan |
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