韧性剪切带内的流体与岩石相互作用研究进展  

Research progress of interaction of fluid with rock in the ductile shear zone

作　　者：刘贵 LIU Gui(Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China;Laboratory of Neotectonic Movement and Geohazard,Beijing 100081,China)

机构地区：[1]中国地质科学院地质力学研究所,北京100081 [2]新构造运动与地质灾害实验室,北京100081

出　　处：《地质力学学报》2020年第2期175-186,共12页Journal of Geomechanics

基　　金：国家自然科学基金面上基金项目(41972233);地震动力学国家重点实验室开放基金(LED2017B04);中国地质调查局项目(DD20190319,20190505)。

摘　　要：构造变形与流体联合控制成矿作用的机制是矿床学界关注的热点问题之一。作为大陆岩石圈中的应变局部化带,剪切带中一般都渗透着大量流体,流体与岩石的相互作用及其化学效应和物理效应,导致了矿物化学不平衡和组分的迁移,引起岩石化学成分重新调整。文章通过对韧性剪切带内的流体作用、剪切带内的成分与体积变化、剪切变形与成矿模拟实验总结,讨论了剪切变形过程中的力学-化学作用、剪切构造应力和流体在构造成岩成矿过程中的行为。因此,要加强构造应力对温度、岩石物理性质、地球化学相平衡和水岩体系的相关参量方面影响的综合研究。The jointly controlling mechanism of tectonic deformation process and fluid mineralization is one of the hot issues of mineral deposits. As a strain localization zone in the continental lithosphere,a large amount of fluid is generally permeated in the shear zone. In the ductile shear zone,the interaction between fluid and rock,the localization of its chemical and physical effects lead to chemical unbalances and component migrations of minerals,causing re-adjustment of chemical composition of rocks. The action of the fluid,the change of composition and volume in the shear zone,the deformation and mineralization simulation experiments in the shear zone are summarized and analyzed. The mechanical-chemical action during shear deformation and the behavior of shear structural stresses and fluids during the process of tectonogenesis are discussed. Therefore,comprehensive research on the influence of tectonic forces on temperature,petrophysical properties,geochemical phase balance,and coherent parameters of water-rock systems should be strengthened.

关 键 词：剪切带 流体-岩石相互作用 成分分异 体积亏损 高温高压 

分 类 号：P613[天文地球—矿床学]