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藏南多层位金锑含矿建造特征及其控矿因素制约

, PP. 321-327

Keywords: 藏南,金锑矿床,含矿建造,变质核杂岩,拆离断层

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Abstract:

初步研究表明,成矿带内主要矿床(点)的赋矿地层具有明显的规律性特征,发育时代和藏南印支和燕山两期伸展运动的构造背景相对应。含矿沉积建造可基本分为碎屑岩型和硅质岩型两类,分别代表裂陷(谷)盆地内的浊流或喷流沉积相。深部来源的矿质可能是产生区域性成矿作用的主要矿源,而地层来源的Au、Sb则起辅助作用。变质核杂岩的空间结构以及拆离构造的发育型式和含矿建造关系密切,它们往往构成有利的容矿和导矿构造。此外,喜山期岩浆活动和含矿建造的发育也存在时空耦合关系。

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