摘要
本文用动力成矿观点对小秦岭金矿田富矿体的形成提出了新的解释,对本区的动力成矿特点作了较详细的说明。文中联系到地壳演化的不同阶段对金矿的富化过程进行了较深入的讨论,并提出了新的成矿系列。笔者以基础地质、大地构造和同位素年龄资料为依据对小秦岭金矿田含金石英脉的成因提出了与前人不同的新观点,认为它是晋宁晚期岩浆期后热液矿床。
In this paper the formation of gole-accumutated orebodies is described and the characteristics of dynamometaliogenesis in the region are explained in details from the viewpoint of dynamometaliogenesis.Related with the different stages of cru-stal evolution, the ore-forming processes of gold deposits are described more thoroughly and a new ore-forming sequence is proposed.
According to the information of fundamental geology and the isotopic age, the author put forwad a new viewpoint about the genesis of the gold quartz veins which is different from that of predecessors.He considers that the gold quartz veins in the small Qinling gold orefield would be the post-magmatic hydrothermal deposits of the later Jinning period.
关键词
金矿
矿床
动力成矿
富化
成矿系列
Dynamometallogenesis, ore-forming sequence, magmatic-hydrothermal deposits, small Qinling gold orefield
