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扬子地块江南构造域的湘黔桂地区，雪峰期（晚元古代早期）地层单元中的变质中基性至基性火山岩类显示大陆（安山）玄武岩至玄武岩类的地球化学特征，变中酸性至酸性火山岩类主要显示Ｓ型，其次为Ｓ与Ｉ过渡型的花岗质岩浆的地球化学特征；变砂岩类和变泥岩类（绢云板岩类）显示大陆边缘砂岩类和泥岩类的地球化学特征。根据其岩石地球化学特征，具双峰式火山岩组合及沉积相（滨岸—滨海—浅海—斜坡相）特征，推测其属于内硅铝裂隙盆地陆缘环境中的产物
The metamorphic to basic volcanic rocks in the stratigraphic units in the Xuefeng Period (Early Neoproterozoic) in the Xiang, Qian and Gui areas of the Jiangnan tectonic setting in the Yangtze block show the geochemical characteristics of the basalts from Bashang (An Shan) to basalts The acidic to acidic volcanic rocks mainly show S type, followed by the geochemical characteristics of S and I transitional granitic magmas. The variable sandstone and variable mudstone (sericite slate) show that the marginal sandstone and mudstone Geochemical characteristics. Based on its geochemical characteristics, the bimodal volcanic assemblage and the features of sedimentary facies (coastal shore - coastal sea-shallow sea-slope facies), it is speculated that it belongs to the product of the marginal environment of the intra-silico-aluminous fracture basin