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地壳上部广泛发育着环状断裂及与其有关的环状岩浆杂岩体和各种各样的内生金属矿床,这在目前已经是众所周知的了.环状构造的时代可以是很古老的,也可以是新生代的.随着时代由老变新,见有一种相当明显的趋向,即地壳中环状构造、环状岩浆杂岩体及与其伴生的矿床的作用越来越大.这一趋势,看来反映了地壳的固结作用在不断增长.许多大型和特大型的内生金属矿床,常与环状断裂有关.这就给地质人员提出了一
The widespread development of ring fractures and their associated ring-shaped magmatic complexes and various endogenous metallogenic deposits in the upper part of the crust is well known to date. The age of the ring structure can be very ancient, Can be the Cenozoic .As the times change from old to new, there is a rather obvious tendency that the crustal ring structure, the annular magmatic complex and the accompanying ore deposits play an increasing role in this trend , It seems that the crustal consolidation effect is growing.Many large and extra large endogenous metallogenic deposits are often associated with ring fractures.This gives the geologic staff a