云南永善金沙厂铅锌矿成矿特征及成因浅析
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摘要
金沙厂背斜核部存有三种不同于层位、不同位态的断层,即震旦系灯影组中顺层滑动带(FC1);下寒武统梅树村组中层间滑动构造(FC2)及切割灯影组白岩哨段下亚段层位的陡倾斜断层组(F4)。当含矿溶液沿上述断层破碎带运移至低温环境下,发生进一步沉淀充填,形成矿区三种赋存类型不同的铅锌矿体。该矿床属地层构造控制的碳酸盐岩型中低温热液铅锌矿床。
There are 3 different horizon,different state faults in the core of Jinshachang anticline,ie,the bedding slip zone in Sinian Dengying Formation( FC1),the interlayer slip structure in Lower Cambrian Meishucun Formation( FC2) and the steep fault set cutting Dengying Formation Baiyanshao Member Lower Sub-Member( F4). The further precipitation and filling take place,then form 3 different occurrence type Pb-Zn bodies as the ore-bearing fluid migrates into the low T environment along the fault zones mentioned above. This ore deposit belongs to the carbonate rock type middle-low T hydrothermal Pb-Zn deposit controlled by bed and structure.
There are 3 different horizon,different state faults in the core of Jinshachang anticline,ie,the bedding slip zone in Sinian Dengying Formation( FC1),the interlayer slip structure in Lower Cambrian Meishucun Formation( FC2) and the steep fault set cutting Dengying Formation Baiyanshao Member Lower Sub-Member( F4). The further precipitation and filling take place,then form 3 different occurrence type Pb-Zn bodies as the ore-bearing fluid migrates into the low T environment along the fault zones mentioned above. This ore deposit belongs to the carbonate rock type middle-low T hydrothermal Pb-Zn deposit controlled by bed and structure.
引文
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[7]裴荣富.金属成矿省等级体制成矿预测理论及矿产勘查评价模式[M].1994.
[8]谢学锦.地球化学块体及地球气深穿透理论与方法[M].1995.
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