“表层褶皱”构造与控矿型式——以马拉格矿床为例

• 作 者: 杨坪
• 机 构: 云锡地质勘探队,
• 出 处: 地质与勘探
• 发表日期: 1980年01期
• 关键词: 拉格 构造 矿床 曲率半径 控矿 地层 碳酸盐类 褶皱构造 矿体 白云岩

“表层褶皱”构造系指岩层受两侧压应力作用而形成的褶皱挠曲.这种构造影响深度较浅,一般只涉及到上部地层,常形成上下地层间褶皱的不协调.上部地层褶皱曲率半径小,褶皱紧密;深部曲率半径大,褶皱开阔.褶皱构造对层间矿床的控制是一种常见的现象.一般而言,褶皱规模大者影响较深,规模小者影响较浅.现以赋存于碳酸盐类地层中的马拉格矿

“Surface folds ” structure refers to the fold deflection of rock strata affected by compressive stress on both sides of the strata, and this structure has a shallow depth and usually only involves the upper strata, often resulting in the uncoordinated folds between the upper and lower strata. The curvature of formation fold is small and the folds are tight. The deep curvature radius is large and the folds are wide. It is a common phenomenon that fold structure controls the strata deposit. Generally speaking, the larger the fold size is, the smaller the influence is. The Malage mine is hosted in carbonate formations