纤维状方解石脉与构造流体研究

A Review of Fibrous Calcite Veins and Tectonic Fluids

纤维状方解石脉作为同构造期流体活动产物,被认为是在超高压构造应力作用下形成的一种高压流体排泄的标型矿物,记录了构造变形过程中的流体特征。从基本概念出发,介绍了纤维状方解石脉和构造流体的基本特征、形成机理和环境条件等。以大巴山前陆构造发育的纤维状方解石脉为例,综述了纤维状方解石脉和构造流体的研究方法、思路、内容及其构造意义,强调了构造脉体在古应力场恢复和构造变化研究中的重要意义。

Fibrous calcite veins,the product of syngenetic tectonic fluid activity,is a kind of typomorphic mineral formed from high-pressure fluid discharge under ultrahigh-pressure tectonic stress and records the fluid characteristics in the process of tectonic deformation.This paper introduces concepts,basic characteristics as well as formation mechanisms and environmental conditions of fibrous calcite veins and tectonic fluids.Taking fibrous calcite veins developed in the Dabashan foreland belt as an example,the research method,idea,content and tectonic significance of fibrous calcite vein and tectonic fluid are briefly introduced by a comprehensive summary to aid the progress of academic research.The important significance of tectonic veins in the study of recovering paleo-tectonic stress fields and structural evolution is emphasized.