一、概述中国南部晚二迭世地层的划分,1959年全国地层会议整理出了统一地层单位,后来也有人提出了新的划分法,但基本上没有脱离龙潭和长兴两个组(或阶)的传统概念。由于大量的普查勘探工作累积了丰富的资料,日益感到过去传统概念值得商榷,表现在以往划分的地层单位,不能客观的反映晚二迭世沉积过程中的海水进退的程序,以及成煤期的多期性。不 First, an overview of the division of the Late Permian strata in southern China. In 1959, the National Stratigraphy Conference compiled a unified stratigraphic unit. Later, some people proposed a new division method, but basically did not divorce themselves from the two groups (or stages) of Longtan and Changxing. Traditional concept. Due to a large amount of census data accumulated in the census and surveying work, it is increasingly felt that the traditional concepts of the past are debatable. The strata units previously classified can not objectively reflect the process of seawater advancing and retreating during the Late Permian sedimentation, Prolonged. Do not