含矿层位的富铀沉积砂体及蚀源区富铀的岩体、石炭系碎屑岩以及火山碎屑岩等，构成铀成矿铀源。
Uraniferous sandstone accumulated during the deposition and the uranium leached from the source area rocks by weathering are main sources for uranium mineralization.
诺顿论述了含铀主岩的沉积条件。
Norton has reviewed conditions of deposition of the uranium host rocks.
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