| 福建漳浦复式岩体同位素地质年代研究 |
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| 引用本文： | 石建基.福建漳浦复式岩体同位素地质年代研究[J].福建地质,2011,30(4):327-334. |
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| 作者姓名： | 石建基 |
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| 作者单位： | 福建省地质测绘院,福州,350011 |
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| 摘 要： | 漳浦复式岩体位于长乐一南澳断裂带南段，是一个大型的燕山期复式岩体。前人将该复式岩体划分为早侏罗世、晚侏罗世、早白垩世早期、早白垩世晚期、晚白垩世等5期侵入岩。其中，早侏罗世、晚侏罗世、早白垩世早期侵入岩都具有韧性变形、变质的特征，而早白垩世晚期、晚白垩世侵人岩则未发生韧性变形、变质作用。通过对变质侵入岩锆石微区（LA—...
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| 关 键 词： | 同位素地质年代 复式岩体 漳浦 |
Isotopic Geologic Studies of Zhangpu Complex |
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| Shi JianJi.Isotopic Geologic Studies of Zhangpu Complex[J].Geology of Fujian,2011,30(4):327-334. |
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| Authors: | Shi JianJi |
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| Institution: | Shi JianJi (Fujian Institute of Geological Survey and Drawing, Fuzhou, 350011) |
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| Abstract: | Zhangpu complex is a large Yanshanian periods complex, which located in southern Changle-Nan＇ao fault zone. The previous studies suggested that the complex are composed of early Jurassic, late Jurassic, late Jurassic-early Cretaceous, early Cretaceous and late Cretaceous five periods intrusive rocks. Early Jurassic, late Jurassic, late Jurassic-early Cretaceous intrusive rocks have characteristic of plastic deformation and metamorphic; Eearly Cretaceous and late Cretaceous intrusive rocks, contrariwise, have not characteristic of plastic deformation and metamorphic. By LA-ICPMS U-Pb chronological study of zircons, Considering the geological characteristics of complex, it is believed that the metamorphic granodiorite of Baikeng intrusive, which was divided into early Jurassic periods, is dated at 149.9 Ma using the LA-ICPMS zircon U-Pb method and represents product of the early-late Jurassic magmatism, and the metamorphic Gumeishan sequence belong to the late-late Jurassic periods, which is date at 137-145.4 Ma, and the metamorphic Zhangpu sequence belong to the early Cretaceous periods, which is date at 106.7 Ma. Zhangpu sequence is the product of the early Cretaceous magmatism which forms Zhangzhou sequence, is deformated and metamorphic in the Changle-Nan＇ao fault zone. |
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| Keywords: | Isotopic Geology Complex Zhangpu |
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