| 角闪石高温高压实验研究进展及其地球物理意义 |
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| 引用本文： | 韩珂楠,易丽,王多君,刘川江,张瑞鑫.角闪石高温高压实验研究进展及其地球物理意义[J].吉林大学学报(地球科学版),2022,52(2):486-502. |
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| 作者姓名： | 韩珂楠 易丽 王多君 刘川江 张瑞鑫 |
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| 作者单位： | 1. 中国地震局地震预测研究所/高压物理与地震科技联合实验室，北京 100089
2. 中国科学院大学地球与行星科学学院，北京 100049 |
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| 基金项目： | 国家自然科学基金项目（91958216，41874104，41373060） |
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| 摘 要： | 高温高压实验作为地球科学研究的重要方向之一，通过模拟地球深部的温度和压力条件，了解地球深部物质的物理化学性质、地球内部结构和动力学演化。角闪石属于双链硅酸盐矿物，为地幔岩石圈的重要组成，广泛分布在海洋地壳、俯冲板块、变质岩和火成岩中。作为俯冲带的重要含水矿物，角闪石的广泛分布和高温高压下的脱水对于理解俯冲带水含量以及水迁移具有重要作用，同时在俯冲带的地震活动、高电导率异常、地震波速异常和岩浆活动中扮演重要角色。在过去的近百年时间里，国内外学者对角闪石高温高压物理化学性质进行了大量的研究。角闪石具有非常复杂的元素组成和结构特征，由此也导致了不同角闪石物理化学性质存在显著不同，包括脱水与脱羟基反应中元素迁移的差异、角闪石形成与分解过程中碱性元素(K+Na)和H2O含量对热稳定的影响、不同空间群结构下的高压结构相变、原位条件下不同结晶方向的电导率异常、不同结晶学优选方位(CPO)下的波速异常等。已有的研究对于角闪石的物理化学性质以及其在俯冲带中发挥的作用有了比较清楚的认识，但仍然有许多问题需要进一步研究，如角闪石的高压脱水动力学、热物性和变形机制等。
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| 关 键 词： | 角闪石 高温高压 俯冲带 热稳定性 结构相变 脱水效应 地球物理 |
| 收稿时间： | 2021-02-08 |
Progress of High Temperature and High Pressure Experimental Study on Amphibole and Its Geophysical Implications |
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| Han Kenan,Yi Li,Wang Duojun,Liu Chuanjiang,Zhang Ruixin.Progress of High Temperature and High Pressure Experimental Study on Amphibole and Its Geophysical Implications[J].Journal of Jilin Unviersity:Earth Science Edition,2022,52(2):486-502. |
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| Authors: | Han Kenan Yi Li Wang Duojun Liu Chuanjiang Zhang Ruixin |
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| Institution: | 1. Institude of Earthquake Forecasting, CEA/ The United Laboratory of High-Pressure Physics and Earthquake Science, Beijing 100089, China
2. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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| Abstract: | As an important directions of geoscience, high pressure and high temperature experimental research can understand the physical and chemical properties of the materials, the internal structure, and dynamics of the Earth by simulating the temperature and pressure environment in the deep of the Earth. Amphibole is a double chain silicate mineral, which is an important component of mantle lithosphere and widely distributed in oceanic crust, subduction plates, metamorphic rocks, and igneous rocks. As one of the most important hydrous minerals in subduction zones, wide distribution of amphibole and its dehydration under high temperature and high pressure play an important role in water content and water migration on the occurrence of earthquakes, high conductivity anomalies, seismic anomalies, and magmatic activities in subduction zones. In the past 100 years, scholars have conducted a lot of researchs on the physical and chemical properties of amphibole at high temperature and pressure. The chemical composition and structure of amphibole are very complicated, which results in significant differences in the physical and chemical properties of different amphiboles, including the difference of element migration under the dehydration and dehydrogenation, the influence of alkaline elements (K+Na) and H2O content on thermal stability during the formation and decomposition, high-pressure structural phase transitions in different space groups, conductivity anomalies in different crystallization directions, and the wave velocity anomalies in different crystallographic preferred orientation (CPO). Previous studies have provided a lot of knowledge on the physical and chemical properties of amphibole and its role in subduction zones, however, some issues such as the high-pressure dehydration kinetics , thermophysical properties, and deformation mechanism of amphibole are still unclear and deserve further study. |
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| Keywords: | amphibole high pressure and high temperature subduction zone thermal stability structural phase transition dehydration effect geophysics |
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