以钙碱性组分岩浆弧为界的弧后盆地,是成矿有利的构造环境。盆地是封闭的,可阻止沉积物的过度氧化。铀矿床集中在盆地隆起和下沉之间过渡带的边缘附近,这里有着对成矿有利的沉积相。通常,只要侵入中心或隆起区有由有利主岩组成的冲积扇,则沉积期和沉积期后的变形作用对铀矿体的定位有影响。 The backarc basin, bounded by the magmatic arc of calc-alkaline components, is a favorable tectonic setting for ore-forming. The basin is closed to prevent over-oxidation of sediments. Uranium deposits are concentrated near the edge of the transitional zone between the uplift and subsidence of the basin, which has favorable sedimentary facies for metallogenesis. Generally, as long as there is an alluvial fan composed of favorable host rocks intruding into the center or the uplift, the deformation during and after deposition has an effect on the location of uranium ore bodies.