论文部分内容阅读
研究表明,北山北带金矿床的形成与岩浆活动关系密切,主要表现在:(1)金矿区附近有大量的海西期岩浆活动;(2)金矿不管是直接产于岩体还是火山岩中,都与岩浆活动有关;(3)金矿床的成矿时代与其附近岩浆岩的侵入时代近于一致;(4)金矿床的硫、铅同位素特征显示成矿物质来自深源,与岩体有关。本区金矿的形成受海西中期岩浆活动控制明显。
The study shows that the formation of gold deposits in the North Beishan belt is closely related to the magmatism, mainly as follows: (1) a large number of Hercynian magmatisms near the gold mines; (2) the gold mines, whether directly produced in the rock masses or the volcanic rocks (4) The sulfur and lead isotopic characteristics of the gold deposits show that the metallogenic materials come from the deep source, and are closely related to the rock mass related. The formation of gold deposits in this area is controlled by Hercynian medium-magmatic activity.