以山东新城金矿为例,探讨了显微构造研究在构造类型及期次判别、构造变形测量、构造差应力换算以及成矿深度测算中的应用,并首次测算出新城金矿- 530 m中段的成矿深度为1781.29 m.%The traditional method of estimating the depth of mineralization ignores the ancient stress for the rocks at the time of diagenetic mineralization. So Lv Cuxian proposed the tectonic stress correction for the method of estimating the depth of mineralization. It is based on the recovery of the tectonic stress of the deformed rocks, which means, first of all, we should eliminate the additional hydrostatic tectonic stress, the hydrostatic pressure of diagenetic mineralization, then, measure the thickness of the covered rocks. This method emphasizes the importance of microstructure study of the deformed rocks in measuring the tectonic stress and the size of tectonic deformation. The calculated results of the depth for diagenetic mineralization is corrected by studying of microstructure. This article discusses the use of microstructure study in measuring the depth of diagenetic mineralization for the Xincheng gold deposit, the usefulness of microstructure study for structure type, stage, tectonic deformation, tectonic differential stress, and measure the depth of mineralization. Finally, we get the result of the measure for the depth of mineralization for the Xincheng gold deposit for the first time. It was 1781.29 m at the -530 m mid segment.
展开▼
