闽西北地区隐爆作用与火山岩型铀矿化

CRYPTOEXPLOSION PROCESS AND VOLCANIC ROCK TYPE URANIUM MINERALIZATIONS IN NORTHWESTERN FUJIAN PROVINCE

隐爆角砾岩体对火山岩型铀矿化的控制作用已为实践所证明，并引起高度重视。本文阐述了闽西北地区隐爆角砾岩形成的时空条件、与围岩的关系、分带性及其鉴别要素。以实例说明隐爆角砾岩体对铀矿化起控制作用的３种主要形式，指出了寻找隐爆角砾岩体的方法。

It has been proved by practice that cryptoexplosive breccia rockbody plays an important role in the volcanic rock type uranium mineralization. This paper expounds the formative time and space conditions of the cryptoexplosive breccia in northwestern Fujian Province,its relation with the country rocks,zonation and key identification factors. Examples are used to demonstrate the 3 major control styles of cryptoexplosive breccia on uranium mineralization. The methods of locating cryptoexplosive breccia rockbody are also discussed in the paper.