宁镇地区中生代岩浆作用强烈，多期次侵入活动频繁。
In Ning Zhen region, Mesozoic magmatism was very intense accompanied with frequent multiple phase intrusive activities.
绿辉石岩是缅甸硬玉岩区一种新的岩石类型，普遍遭受多期次硬玉化。
Omphacitite, a new type of rock found in Myanmar jadeitite area, had experienced multi-stage jadeitizations.
华北地台区构造作用具有多期次板块俯冲和碰撞，是金矿形成的有利条件。
The tectonism of North China platform had the multistage plate subduction and collision which form a favourable condition for gold mineralization.
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