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本文从地壳波浪运动的观点出发,运用沉积构造旋迥,参考岩石同位素年龄和古生物资料,将前震旦系碧口群划分为下部陆源碎屑岩建造,中部沉积岩—火山岩建造和上部类复理石建造;并将上覆震旦系划分为下部碎屑岩和上部碳酸盐岩建造。构造运动阶段有:草尖山运动、勉略运动(晋宁运动)、刘家坪运动。勉(县)—燕(子砭)—白(水街)断裂带,不应该作为碧口群的南界或四川地台和摩天岭褶皱带的界线。碧口群分布地区,应是四川地块西北边缘的摩天岭构造带(属于龙门—长白构造带)与天山—秦岭构造带相互交叉的地段。
Based on the crustal wave motion, the authors use the sedimentary structures of Gyrochylla, reference rock age and palaeontology data, and divide the former Sinian Bikou into the following terrigenous clastic rocks, the middle sedimentary rocks-volcanic rocks and the upper class flysch And the overlying Sinian was divided into lower clastic rocks and upper carbonate rocks. Tectonic movement stages are: Grass Jianshan movement, Mianlian movement (Jinning movement), Liujiaping movement. Mian (counties) - Yan (Zizania) - White (Water Street) fault zone, should not be used as the southern boundary of the Bikou group or the Sichuan platform and friction ridge folding belt boundaries. Bikou group distribution area should be the northwestern margin of the Sichuan block Motianling tectonic belt (belonging to the Longmen - Changbai tectonic belt) and the Tianshan - Qinling tectonic belt intersect each other.