CAJ | 학술논문

马达加斯加金矿床类型为石英脉型，金矿化包括含金石英脉及其两侧的矿化围岩，金矿体产在NNW向剪切带和EW向断层交会处。金成矿作用主要与泛非造山运动有关。在泛非造山期，马达加斯加发生了强烈的构造岩浆活动，地壳深部含金硅铝质岩发生部分熔融形成花岗质岩浆。花岗质岩浆从岩石中萃取成矿组分，形成含矿热液流体。沿断裂上升的热液流体与地下含矿热水混合，构成岩浆水与大气降水的混合成矿流体，这些成矿流体进入构造有利空间，充填和交代围岩，形成含金石英脉。
마체가사가금광상류형위석영맥형，금광화포괄함금석영맥급기량측적광화위암，금광체산재NNW향전절대화EW향단층교회처。금성광작용주요여범비조산운동유관。재범비조산기，마체가사가발생료강렬적구조암장활동，지각심부함금규려질암발생부분용융형성화강질암장。화강질암장종암석중췌취성광조분，형성함광열액류체。연단렬상승적열액류체여지하함광열수혼합，구성암장수여대기강수적혼합성광류체，저사성광류체진입구조유리공간，충전화교대위암，형성함금석영맥。
The gold deposit in the Madagascar is a classical quartz vein type gold deposit,the gold mineralization developed in the quartz vein and its wall rock.The gold deposit is intersected by major NNW trending shear zones and east-trending fracture sets,gold mineralization is associated with Pan-African orogeny.In the Pan-African orogeny,there are intensive tectonic-magmatic in Madagascar,results partial melting of the lower crust,a large amount of fluids and granitic magma are formed.In the process of the ascent of the fluids,mixed shallow-sourced meteoric fluid,the ore-forming fluids would have entered the favourable faults,resulting in mineralization.