一、区域地质概述矿区位于某褶皱带中央隆起部位的大断裂带中,基性杂岩即沿此断裂带侵入。在200平方公里的区域面积中,广泛分布着古老变质岩系。区域构造线方向近东西,并组成一个向南陡倾斜的单斜层。基性杂岩的分布与本区构造线一致,岩体产状、形状受围岩控制。基性杂岩面积约80平方公里,岩体西宽东窄。 I. Overview of Regional Geology The mining area is located in a large fault zone at the central upwelling part of a fold belt, where the basic complex rocks intrude along the fault zone. In 200 square kilometers of the area, widely distributed ancient metamorphic rocks. The regional tectonic lines are close to east and west and form a monoclinic with a steep southward slope. The distribution of basic complexes is consistent with the tectonic line in this area, and the shape and shape of the rock mass are controlled by the surrounding rock. Basalt complex area of ​​about 80 square kilometers, east and west of rock mass narrow.