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湘东北—桂北中元古代冷家溪群和四堡群的变玄武岩类显示过渡型拉斑玄武岩类的地球化学特征，变砂岩类和变泥岩类（绢云板岩类）显示大陆边缘的砂岩类和泥岩类的地球化学特征。根据岩石地球化学和沉积相（低密度流复理石建造）特征，推测湘东北冷家溪群和桂北四堡群主要形成于大陆边缘深水环境。
The metamorphic basalts of the Lengjiaxi Group and the Si Bao Group in the Northeastern Hunan-Northeastern China show the geochemical characteristics of the transitional tholeiitic basalts. The variable sandstone and the variable mudstone (sericite slate) show that the continental margin Geochemical characteristics of sandstone and mudstone. According to the characteristics of lithochemistry and sedimentary facies (low-density flow flysch), it is speculated that the Lengjiaxi Group in the northeast Hunan and the Si Bao Group in the northern Guangxi are mainly formed in the deep-water environment of the continental margin.