地质基础理念之我见

MY OPINION ABOUT SOME BASIC GEOLOGICAL THEORY

任一侵位的岩浆体,在结晶分异、固化成岩过程中,一般都可分为:已结晶的固相岩体、正(半)结晶的可塑相岩体及未结晶的熔融相岩浆3部分.此时,若发生了地壳运动,地壳运动的构造作用力,使正(半)结晶的可塑相岩体发生可塑相变形,形成片麻化岩体;地壳运动(包括地震)时的构造作用力为脉动性质的挤压作用力;岩体发生片麻化的地壳运动,又使已结晶的固相岩体和围岩发生断裂活动,形成了断裂带控矿、容矿构造;未结晶的熔融相岩浆再度上升侵位,便形成了小侵入岩体控矿构造.残浆的形成与排出,控矿构造的发生、发展与控矿过程,都是在这次地壳运动过程中完成的.因此,对这次地壳运动可称成矿作用.

During the process of crystal fractionation and solidifization, any intrusion would include three parts, crystallized solid phase, crystallizing plastic part and not crystalized melted magma. If diastrophe happened in the meantime, tectonic force due to the crust movement would drive the plastic rock deforming plastically to form gneissification intrusive rock. At the same time, pulsating compressive force due to the crust movement including earthquake also made the crystallized rock ruptured and form ore control fault fracture and the host fracture. Then uncrystalized magma go on intruding upward and form intrusive ore control tectonics . Overflow and framing of residual magma, occurrence and development of ore control tectonics all happens in this event, so, we can call this crust movement as ore-forming event.