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由热力变质作用和超变质作用引起的岩石中化学元素的迁移.区域热力变质作用和超变质作用能引起原岩中原生组分的重结晶,而超变质作用能引起原岩部分的或完全的重熔.低变质相特点是岩石的脱水和大部分自生矿物的重晶,同时,易溶元素,特别是金属产生很强的活动性.随着变质作用的增强,组成岩石的矿物被溶解,然后完全重结晶.在所有的带均能见到由变质分异所产生的矿化水流引起的交代现象.在这些作用的影响下,矿石物质大量迁移,导致造矿元素重新分配并富集.
The migration of chemical elements in the rock caused by the thermal metamorphism and the metamorphism can lead to the recrystallization of the primary components in the original rocks and the metamorphism can cause the partial or complete Remelting.The characteristics of the low metamorphism are the dehydration of the rock and the recrystallization of most authigenic minerals.At the same time, the easily soluble elements, especially the metal, have a strong activity.As the metamorphism is enhanced, the minerals that make up the rock are dissolved, And then completely recrystallized.The metasomatism caused by the mineralized water flow produced by the metamorphic differentiation can be seen in all the belts.According to these effects, a large amount of ore material migrates, leading to the redistribution and enrichment of ore-forming elements.