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我国北东部地区包括东北、华北、华东一部分省(区),横跨两个不同的大地构造单元,南部为华北准地台,北部为内蒙兴安褶皱系.南北两区的地质发展史、构造岩浆活动、沉积建造有显著不同.不同的构造分区,均产有丰富的山金、砂金和伴生金矿床.据初步统计,全区有金矿床数百处,它们的储量占全国金总储量的一半以上,是我国最重要的金矿产区.因此,研究该区会矿床的类型、分布规律,对指导找矿有很重要的现实意义.
The northeastern part of our country consists of a number of provinces (regions) in the northeast, north and east China, spanning two different tectonic units, the southern part of which is the North China prospective platform and the north part of the Inner Mongolia Xing’an fold system. Activities, sedimentary construction are significantly different.Different tectonic zoning, are rich in gold, gold and associated gold deposits.According to preliminary statistics, the region has hundreds of gold deposits, their reserves account for half of the country’s total gold reserves Above, it is the most important gold ore producing area in our country.Therefore, it is of great practical significance to study the types and distribution of ore deposits in the area and guide ore prospecting.