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指出了实验室柯石英最小静态形成压力对判断地表柯石英形成机制的重要性.报道了诸多因素,包括动力学因素对柯石英最小静态形成压力(P_(cos,min))的影响.分析了已有文献的实验室P_(cos,min)数据,指明了它们和不均匀局域高压微区压力与表观测量压力的关系.提出不均匀局域高压微区的作用模型;分析了局域高压微区与大尺度板块折返形成地表柯石英特征的差异.最后,对地表柯石英的形成机制进行了讨论.指出地表中因组成物质和应力的不均匀性,可形成许多小尺度不均匀局域高压微区,它们在造山带的断裂带剪切带中,受外界因素(如地震波和/或挤压剪切力等)的影响,容易形成柯石英,是可能性最大的地表柯石英形成机制;而板块折返假说虽然可以解释地表柯石英的形成,但是一种可能性很小的机制.
The importance of minimum static formation pressure of laboratory coesite to determine the formation mechanism of surface coesite was pointed out and many factors including the influence of dynamic factors on the minimum static formation pressure of coesite quartz (P_ (cos, min)) were reported. The literature of laboratory P_ (cos, min) data indicates the relationship between them and the non-uniform local high-pressure micro-zone pressure and the measured pressure, and proposes the action model of the non-uniform local high-pressure micro zone. The formation of surface coesite is characterized by the reformation of high-pressure micro-region and large-scale plate.Finally, the formation mechanism of surface coesite is discussed.It is pointed out that due to the heterogeneity of the composition and stress in the surface, many small-scale non-uniform In the shear zone of the orogenic belts, they are likely to form coesite by the influence of external factors (such as seismic waves and / or compressive shear stress), and are the most likely surface coesite to form Mechanism. However, plate fold-back hypothesis can explain the formation of surface coesite, but a less probable mechanism.