| The PTst Evolution of Metamorphism and Development Mechanism of the Thermal-Structural-Gneiss Domes in the Chinese Altaides |
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| 作者姓名： | Zhuang Yuxun Institute of Geology CAGS Beijing |
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| 作者单位： | Zhuang Yuxun Institute of Geology，CAGS，Beijing |
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| 基金项目： | Project funded by the National Natural Science Foundation of China, No.48900021 |
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| 摘 要： | A series of thermal-structural-gneiss domes (briefly TSG domes) are developed in the Chinese Altaides. Sericite-chlorite zone, biotite zone, garnet zone, staurolite zone, kyanite (andalusite)zone, sillimanite- cordierite (sillimanite-garnet)zone, migmatite zone and migmatic granite- gneiss field are developed from the low-grade metamorphic area to the centre of the TSG domes. The succession of the formation and evolution of the progressive metamorphic zone, migmatite zone and migmatic granite-gneiss corresponds to the spatial sequence from the outer part to the centre of the TSG domes. The peak temperature of the metamorphism and granitization increases progressively from 400℃ to 800℃ while the pressure decreases progressively from 1.05 GPa to 0.10 GPa from the biotite zone to the migmatic granite-gneiss field. The metamorphism of the erogenic belt may be described by the pressure-temperature-space-time model (PTst). In the main episode of orogeny, the deep heat flow and structural flow upsurged along
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The PTst Evolution of Metamorphism and Development Mechanism of the Thermal-Structural-Gneiss Domes in the Chinese Altaides |
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| Authors: | Zhuang Yuxun Institute of Geology CAGS Beijing |
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| Abstract: | |
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| Keywords: | Chinese Altaides PTst evolution TSG dome |
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