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地壳中铀、钍分布是由其沉积和花岗-变质岩层的物理-化学和构造分异作用所引起,这种分异作用与内生和外生旋迥的地质现象内金属迁移和富集的综合作用有关。岩石圈内金属堆积的最高水平与由热液碱交代作用和酸交代作用以及地下水的渗透活动引起的后生岩石转变的一些作用有关。沉积和岩浆活动的同生作用主要导致地球化学特定的岩石化合物如碳质-硅质页岩,磷块岩、稀土花岗岩等的形成。所形成的主要铀矿物有两组,即: (1)较简单的矿物,主要是由单一的热液交代或地下水渗透事件引起的。 (2)复杂的矿物集合体,它们由于地球化学上特定的化合物中各
The distribution of uranium and thorium in the crust is caused by the physical-chemical and tectonic differentiation of sediments and granitic-metamorphic strata. This differentiation is associated with the migration and enrichment of metals within the geological phenomena of endogenesis and exogenesis The combined effect of. The highest levels of metal accumulation in the lithosphere are related to some of the effects of metazoan conversion caused by the hydrothermal cassation metasomatism and the infiltration of groundwater. The syngenetic effects of sedimentation and magmatism mainly result in the formation of geochemical specific rock compounds such as carbonaceous siliceous shale, phosphorite and rare earth granite. There are two main groups of uranium minerals formed: (1) simpler minerals, mainly caused by single hydrothermal replacement or groundwater infiltration events. (2) Complex mineral assemblages, due to geochemically specific compounds