摘要
小秦岭金矿床容矿断裂带中发育一套完整的从糜棱岩至碎裂岩系列的构造岩,显微构造现象异常发育,经研究判断容矿断裂带为右旋逆冲推覆型韧-脆性剪切带.容矿空间(即断裂)的形成机制为液压致裂作用,其周期性的裂开(crack)和含矿热液的周期性的封闭作用(sealing)最终导致多期多阶段的含金石英脉体的形成.
A complete set of fault rocks from mylonite to cataclasite are present in the ore-hosted fractures at Xiaoqinling Au-ore area where microstructural phenomena are very common. The fractures are sinistral thrust-type ductile-brittle shear zones and formed by the hydrofracturing by the high fluid pressure. The cyclic crack of the fractures and cyclic sealing caused by the ore-forming fluids produced the multistage gold-bearing quartz veins.
出处
《地质找矿论丛》
CAS
CSCD
1993年第2期26-33,共8页
Contributions to Geology and Mineral Resources Research
基金
国家自然科学基金(编号49172134)
