论文部分内容阅读
采自那米比亚Darmara区Autseib浅成断层带的方解石构造岩具有两种显著的结构反差 :( 1 )微米级细粒基质与厘米级粗晶碎斑 ;( 2 )宏观脆性碎裂结构与微观韧性糜棱结构 .韧性破裂作用 ,即由双晶作用、流体相促进的位错蠕变和动态重结晶作用诱发与协调的破裂作用是岩石变形的重要机制 .而粒内与粒间边界的不协和性是岩石细粒化发育的重要因素
Calcite structural rocks collected from the Autseib shallow-faulted zone in the Darmara area of Namibia have two significant structural contrasts: (1) micrometer-sized fine-grained substrates and centimeter-level coarse grain crinkles; (2) macroscopical brittle-fractured structures and Micro-ductile mylonitial structure, ductile rupture, that is, dislocation induced by dual-phase effect, fluid phase facilitation, dislocation creep induced by dynamic recrystallization and coordination is an important mechanism of rock deformation, while the relationship between intragranular and intergranular boundaries Inconsistency is an important factor in the development of fine grained rock