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结构面力学性质的鉴定,是研究地质构造不可缺少的步骤,也是建立构造体系的基础。结构面力学性质的野外研究是主要的,显微镜下结构面的鉴定是野外工作的继续。结构面的显微镜下鉴定比较繁杂。它包括构造岩鉴定、应力矿物研究和岩组分析。本文只将在粤北某些燕山期花岗岩结构面的镜下鉴定特征介绍如下:
Identification of the mechanical properties of the structural plane is an indispensable step in the study of geological structure and also the basis for the establishment of structural system. The field research on the mechanical properties of the structural plane is the major one. The identification of the structural plane under the microscope is the continuation of fieldwork. Microscopic identification of the structural surface is more complicated. It includes tectonite identification, stress-mineral studies, and group analysis. In this paper, only some of the Yanshanian granite surface in northern Guangdong microscopic identification features are described below: