四川盆地北部广元地区铀矿成因研究

Study of Genesis of Uranium Deposits in the Guangyuan Region, North Sichuan

燕山运动时期,四川盆地边缘的龙门山、米仓山和大巴山剧烈隆起遭受剥蚀,古陆前缘的川北台陷梓潼—剑阁台凹和旺苍台凹接受了大量含铀陆源碎屑。铀矿化受大地构造位置、蚀源区铀源条件、沉积区岩相古地理和成矿地质环境制约。铀以吸附状态存在,呈细分散状、星点状存在于砂岩、砾岩孔隙中。

U-bearing terrigenous clastic rock was deposited in the Guangyuan region during the Yanshanian movement.The uranium mineralization is controlled by geotectonic setting,uranium source,sedimentary facies and paleogeographic environment.Uranium occurs as adsorbed state in the fissures of sandstone and conglomerate.