| 大陆下地壳麻粒岩的流变学研究进展 |
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| 引用本文： | 李丽敏,刘祥文,谢战军.大陆下地壳麻粒岩的流变学研究进展[J].地球科学进展,2011,26(3):275-285. |
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| 作者姓名： | 李丽敏 刘祥文 谢战军 |
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| 作者单位： | 李丽敏,谢战军,Li Limin,Xie Zhanjun(中国地质大学地球科学学院,湖北,武汉,430074);刘祥文,Liu Xiangwen(中国地质大学地质过程与矿产资源国家重点实验室,湖北武汉430074;教育部纳米矿物材料及应用工程研究中心,湖北,武汉,430074) |
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| 基金项目： | 国家自然科学基金重大研究计划项目，国家自然科学基金项目 |
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| 摘 要： | 大险下地壳麻粒岩的流变学研究可以解释地壳变形、壳幔物质交换以及岩石圈深部动力学过程等科学问题.前人通过研究各矿物的显微构造变形特征与变形机制,运用广义混合流变律探讨多矿物复合岩石的流变性质,结合水与流体对岩石变形强度的弱化作用,阐明在大陆下地壳变形环境下复矿麻粒岩的塑性变形和韧性流变性质.目前人们致力于对天然变形岩石和...
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| 关 键 词： | 大陆下地壳 麻粒岩 变形机制 水解弱化 高温高压实验 流变性质 |
Deformation Mechanism and Rheological Property of Granulite in the Continental Lower Crust:A Review |
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| Li Limin,Liu Xiangwen,Xie Zhanjun.Deformation Mechanism and Rheological Property of Granulite in the Continental Lower Crust:A Review[J].Advance in Earth Sciences,2011,26(3):275-285. |
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| Authors: | Li Limin Liu Xiangwen Xie Zhanjun |
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| Institution: | 1.School of Earth Science, China University of Geosciences, Wuhan430074,China; 2.State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan430074,China;;
3. Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan430074,China |
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| Abstract: | The rheological study of granulite from continental lower crust is one of the scientific problems, which reveals the crustal deformation, crust-mantle exchange, and deep lithosphere dynamic process. This paper integrates the previous work on microstructure and deformation mechanisms of multiphase granulite, and clarifies the plastical deformation mechanism and rheological properties of multiphase granulite under the deformation conditions of lower continental crust by the application of generalized mixed flow law and combining the effect of water weakening or fluid on the deformation strength of the lower crust. At present, researchers are working on the high-temperature and high-pressure deformation experiments of natural and experimental deformed minerals, and explore the rheological property of multiphase granulite in the continental lower crust by means of experimental simulation of the process of mineral deformation and melting under the lower continental crust condition. There is a very close relationship between the macroscopic and microscopic structure study of rheological study of lower continental crust granulite. This paper introduces research progress of the rheological relationship between regional tectonics (the extrusion of material beneath the orogenic belt) and lower continental crust flow and their controlling factors, taking the example of the relationship between lower crustal flow from Tibet plateau and the high temperature plastic rheology of granulite under continental lower crust. The rheological study of multiphase granulite is the scientific basis for discussion on the continental lower crust deformation and its strength. Since the time of the study carried out in China and abroad is not too long, many scientific issues are still need further study. |
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| Keywords: | Continental lower crust Granulite Deformation mechanism Hydration weakening The high temperature and high pressure experiments Rheological property |
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