摘要
本文从构造分析入手，着重研究构造作用下成矿裂隙特征和流体的运移通道、方式及成因机制，认为焦家金矿床差异的矿化特征主要由不同的裂隙导致形成，微构造裂隙之间往往没有截然分开的界线，常呈渐变接触关系。矿化裂隙成生主要有流体驱动显微构造裂隙扩展和构造剪张形成脉状裂隙两种方式。流体运移以真空泵式为主，渗流方式为辅，不同的裂隙成生机制和流体运移方式导致形成差异的矿化特征。
This paper deals with structure making emphasis on ore bearing fissures, ore fluid channels and their genetic mechanism. Jiaojia Au deposit is charactered by variation of ore body and mineralization. One fissure or micro structure grades into another without sharp boundary. Genetically, the mineralized fissures were formed along microstructures by dilated and shear tensile pressured fluid. Fluid transportation was mainly dominated by vaccum pumping and less by seepage. It is that the different mechanism of fissures and fluid transportation result in variation of ore body and mineralization.
出处
《地质找矿论丛》
CAS
CSCD
1999年第2期16-22,共7页
Contributions to Geology and Mineral Resources Research
关键词
成矿裂隙
金矿床
流体运移机制
渗流方式
mineralized fissures, micro fissures expansion driven by fluid, vein fissures expanded by shear and tensile pressure, vacuum pump, seepage, Jiaojia
