摘要
秦巴山区金矿分布,可划分小秦岭、北秦岭、“勉略宁”、南秦岭和北大巴山5个成矿区。同时叙述了秦巴地区金源层,提出了金矿活化作用是形成金矿的一个重要条件。富矿多在不同的大地构造交汇部位和强烈的蚀变区。金活化的表现有多次构造活动、多期岩浆侵入、区域变质作用、强烈混合岩化过程中金的运移、叠加、改造作用,而最主要的是舍金黄铁矿石英脉的贯入。
The gold ore deposits in Qinba mountain area are distributed in five metallogenic dis tricts Xiao Qinling, North Qinling, Mianluening Triangle Area, South Qinling and North Dabashan Area. The source beds for gold mineralization in Qinba area are also discussed and it is pointed out that the activation of gold ores is the precondition for gold mineralization. Most of the bonanzas accur at the joining portions of different tectonics and the intensive alteration areas. Gold activation is shown by the gold migration ,superimpo-sition and reformation during the multiphase tectonic activities and magmatic intrusions and intensive migmatization, while the most important factor is the emplacement of gold-bearing pyrite-quarty veins.
出处
《矿产与地质》
1990年第3期32-36,共5页
Mineral Resources and Geology
