摘要
热液型独立的金矿床,绝大部分与围岩无直接成因联系。围岩作为热液型金矿赋存的空间条件,具有重要的地质意义。国内的金矿围岩以太古界和元古界的变质岩系占优势;国外则以年轻的火山岩、火山碎屑岩占首位。金矿的成矿作用与岩浆喷发和侵入活动的温压条件关系密切。我国热液型独立的金矿床找矿重点,应着重于年轻的火山岩、火山碎屑岩和沉积碎屑岩分布区。
Most of separate gold deposits with hydrothermal-type have no direct relation with country rocks in origin. As the hosting space of the hydrothermal gold deposits, wailrocks are very important in respect to geology. In China, the predominant country rocks of gold deposits are the Proterozoic and Palaeozoic metamorphic rocks, but the young volcanic rocks and volcaniclastic rocks are put in the first place on abroad. Gold mineralization is closely related to the temperature and pressure of magmatic eruption and intrusion. The prospecting target of distinctive hy-drothemal gold deposits should be focused on the distributing areas of young volcanic rocks, volcanicastic rocks and sedimentary clastic rocks.
出处
《矿产与地质》
1990年第4期31-37,共7页
Mineral Resources and Geology
