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本文从应力矿物的变形现象;构造岩岩石类型;破碎矿物颗粒的粒径变异;构造岩化学元素的迁移变化和构造岩胶结物及胶结类型的变化等几方面讨论了在宏观上表现为正断层的陕西临潼牡丹沟北北东向断裂带的构造岩石学特征,从而确定了该断裂为一以扭为主的压扭性力学性质的破裂结构面,是快速应力作用的结果,其影响宽度可达三十米,断裂化学元素迁移能力顺序为钾、钠、铝、钙、镁、钛、铁、硅。
In this paper, the deformation of stress minerals, the type of tectonic rocks, the variation of particle size of crushed mineral particles, the migration of tectonic rocks and the variation of cements and cementation types are discussed. The tectono-petrological characteristics of the north-north east fault zone in Mudan Gully, Lintong, Shaanxi province, so as to confirm the fracture as a torsion-dominated fracture surface with compressive-torsional mechanical properties, is the result of rapid stress. Its influence width Up to thirty meters, the order of chemical element migration of fracture was potassium, sodium, aluminum, calcium, magnesium, titanium, iron and silicon.