regional metamorphism

基本解释

Through late regional metamorphism, the phosphorite was turned into the apatite deposit.
经后期区域变质作用使磷块岩变质成磷灰岩矿床。
Regional metamorphism or migmatization could play role in gold remobilization from the source bed and concentration at some localities.
在区域变质或混合岩化作用下，矿源层中的金可能发生活化、转移并在局部富集。
The rhodonite deposit was for- med mainly through two stages, sedimentation and regional metamorphism, and its genetic type belongs to epithermal metamorphic facies.
蔷薇辉石矿床的形成主要经历了沉积期和区域变质期两大阶段。成因类型属变质岩型低温变质相蔷薇辉石矿床。