华北地台太古代高级变质地体中的金矿化

GOLD MINERALIZATION IN THE ARCHAEAN HIGH GRADE METAMORPHIC TERRAINS OF NORHT CHINA PLATFORM

很多人认为太古代地体中没有绿岩带就不可能有金矿化,但华北地台上一些高级变质地体中也发现了一系列大中型金矿。本文讨论了高级变质地体中产生金矿化的可能性、初步总结了此类金矿的成矿地质特征,并将其与典型绿岩带型金矿进行了对化,发现了它们之间存在一系列区别。本文并对产生之些区别的原因进行了初步探讨。

A lot of gold geologists firmly believe that the gold mineralization can only occur in greenstone belts in Archaean metamorphic terrains, but as a matter of fact, a series of large and middle scale gold deposits has also been discovered in some typical Archaean high grade metamorphic terrains of North China platform. The authors discussed the possibility of gold mineralization occurring in the Archaean high grade metamorphic terrains, summarised the main geological characteristics of this distinctive kind of gold deposits and compared them with those in Archaean greenstone belts. Some differences between them have been recognized and an preliminary inquiry to the causes has also been made.