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四川省西北部是我国岩金矿床分布的重点地区之一,尤以微细浸染型金矿床为主。该区有刷经寺联合村、嘎拉、金木达等大中型与超大型金矿床,显示出金矿成矿的良好前景。研究区处于古特提斯东缘的被动陆缘,为稳定大陆边缘海湾或封闭的海湾浊流盆地环境。浊积岩沉积形成金的初步富集,并在印支期发生低温动力变质,成为微细浸染型金矿的主要矿源层。岩浆活动沿区内构造边缘破裂带发生,形成构造岩浆岩带,并与金及多金属成矿有着密切的关系。双向收缩的造山运动为金成矿提供了区域构造条件,韧脆性剪切带控制了金矿的分布,并为成矿提供了主要的热动力。
The northwestern Sichuan Province is one of the key areas for the distribution of rock gold deposits in our country, especially the finely disseminated gold deposits. There are large, medium and large gold deposits in the area, such as the joint village of Brush Temple, Gala and Jinmu Da etc., showing a good prospect of gold mineralization. The study area is located at the passive margin of the eastern margin of the ancient Tethys in order to stabilize the environment of the continental marginal gulf or the enclosed Gulf turbidity basin. Turbidite sediments formed the initial enrichment of gold, and occurred during the Indosinian low-temperature dynamic metamorphism, becoming the main source layer of finely disseminated gold deposits. Magmatic activity takes place along the marginal tectonic rupture zone to form tectonic magmatic rocks and is closely related to gold and polymetallic mineralization. Bidirectional contracted orogenic movement provides regional tectonic setting for gold mineralization. The ductile-brittle shear zone controls the gold distribution and provides the main thermodynamic force for metallogenesis.