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右江中生代三叠系槽盆相浊流沉积岩系遭受了区域强烈变形和极低级变质作用，伊利石结晶度指数为０．３３１°～０．２６５°△２θ，属于浅层或近变质带；在野外和光学显微镜观察基础上，运用Ｘ射线衍射、透射电镜及电子探针等现代测试技术，对绿泥石－白云母堆垛集合体、细粒基质层状硅酸盐矿物的化学成分及结构进行了详细研究，指出绿泥石－白云母堆垛的碎屑成因及母矿物的变质过程；强调右江中生代极低级变质带具有板内造山带的构造变形特征
The Mesozoic Triassic fluvial sedimentary units in the Youjiang River suffered strong regional deformation and extremely low grade metamorphism. The illite crystallinity index is 0.331 ° ~ 0.265 ° △ 2θ, belonging to shallow or nearly metamorphic belt Based on the field and optical microscope observation, the chemical composition of the chlorite-muscovite stacking aggregate and the fine-grained layered silicate minerals were studied by using modern testing techniques such as X-ray diffraction, transmission electron microscopy and electron probe. And structure of the Mesozoic metamorphic belt, and pointed out the cause of detritus and the metamorphic process of the mother minerals in the chlorite-muscovite stacks. It is emphasized that the Mesozoic ultra-low metamorphic belt of the Youjiang has tectonic deformation characteristics of intraplate orogenic belts