摘要
文中将大冶群角砾岩根据成因分为六种类型,总结出六种类型角砾岩野外区分际志便于野外人员掌握。据各类型角砾岩的成因及特征,总结了含铅锌矿角砾岩是由同沉积断裂角砾岩、滑塌角砾岩和构造—岩溶角砾岩组成的复成因角砾岩。进而归纳其野外鉴别特征及分布控制条件。掌握了含铅锌矿角砾岩分布规律在鄂东地区大冶群里寻找铅锌矿就会有新的进展。
The Pb—Zn ores within Daye Group from eastern Hubei all distribute in breccia. Based on the geneses, the author divides the breccia within Daye Group into six types and sums up the criteria for distinguishing six types of breccia in the field in order to be mastered by field geologists. Accord ing to the geneses and characteristics of various types of breccia it is summed up that the Pb—Zn ore—bearing breccia are polygenetic breccia consisting of synsedimentary faulting breccia, slip breccia and structural—karst breccia. From this, the characteristics identified in field and distribution control conditions are summarized. By mastering the distribu-tion regularities of Pb—Zn ore—bearing breccia, the prospecting for Pb—Zn ores within Daye Group from eastern Hubei should be in a new progress.
关键词
鄂东
大冶群
分类
角砾岩
找矿方向
铅锌矿
Breccia of Daye Group from eastern Hubei
Classification
Characteristics of Pb-Zn ore-bearing breccia
Prospecting target
