熊耳山变质核杂岩构造研究及找矿进展

METAMORPHIC CORE COMPLEX IN XIONG'ERSHAN AND THE ADVANCES IN PROSPECTING

豫西熊耳山区是一个在中新生代伸展构造背景中形成的拆离－ 变质核杂岩构造。其核部由新太古界太华群变质岩系和燕山期重熔型花岗岩体组成，盖层主要由中元古界熊耳群火山岩系组成。滑脱拆离系包括位于太华群和熊耳群之间的主滑脱拆离带和盖层中一系列次级滑脱断层。区内金银矿化在空间分布上受到变质核杂岩构造的控制，成矿时代与变质核杂岩主要形成期一致，成矿过程和拆离断层的发展过程一致。拆离断层控矿体系可分为６ 种基本控矿构造类型，其中以产于拆离带附近的陡倾斜蚀变破碎带和爆破角砾岩筒最重要。根据以上认识。

The metamorphic core complex in Xiongershan was formed in Mid-Cenozoic. The core of the metamorphic core complex is Taihua Group metamorphic rocks of Archaeozoic and Yanshannian granite. The cover is the volcanic rocks of Xionger Group. A series of detachment faults are developed between Xionger Group and Taihua Group. The distribution of ore deposits are controlled by metamorphic core complex. The metamorphic core complex and metallization took place at the same time. The control of detachment faults on metallization can be divided into six ore-controlling types, of which the altered cataclastic zone with high angle and explosion breccia pipe are the most important. In the recent years, more and more ore deposits (occurences) have been discovered.