本文以地层序列、年代地层格架、古地磁、岩浆岩—火山岩的地球化学及Ｓｍ－Ｎｄ同位素研究之成果，论证湖南板溪群属新元古代青白口纪原地—准原地沉积地层，不是“增生杂岩”或“洋壳残片”。湖南自早元古代陆壳形成以后，至中生代前没有洋盆发育阶段。 Based on the sequence of stratigraphic sequence, age stratigraphic framework, paleomagnetism, geochemistry of magmatic rocks and volcanic rocks and the results of Sm-Nd isotopic studies, the authors demonstrate that the Banxi Group in Hunan Province belongs to the Proterozoic-Quasi-In situ sedimentary formations of Neoproterozoic Qingbaikouji, Not “accretionary” or “oceanic shell fragments.” Since the Early Proterozoic continental crust was formed in Hunan, there was no oceanic basin before the Mesozoic.