中国绿岩带金矿床的时空分布

Temporal and Spatial Distribution Feature of Gold Deposits in Greenstone Belts of China

绿岩带金矿床是在绿岩带形成和演化过程中形成的，在我国岩金矿产储量中占有很重要的地位。该类金矿床主要分布在华北地台的北缘和西南缘。金矿床的分布具有趋群性、成带性，受绿岩带层序、构造、岩浆作用、退变质带等多因素的控制。成矿时代大致可分为四期：新太古代早期、新太古代末期、古元古代和燕山期。

Gold deposits in greenstone belts,formed during the formation and evolution of greenstone belts and playing important role in gold reserve of China,are mainly distributed in the northern and southwestern margins of North China Platform.They occur in crowds and in belts,and are controlled by greenstone sequences,structure,magmatism and retrometamorphic belts.Metallogenic epoch may be divided into four phases:Early Neoarchean,Last Neoarchean,Paleoproterozoic and Yanshanian,among them the last three are more important.