【摘要】 贵卅南部泥盆系中下部发育着一套石英砂岩——蟒山石英砂岩(乐森(王寻),1929)。以往用传统地层学理论强行将其与时间地层单位统一,造成划分对比上的混乱。本文用多重地层划分的概念,对蟒山石英砂岩的穿时性作了讨论,并用古地质图等分析了穿时机制。重新确定了岩石地层单位—蟒山石英砂岩的定义。更多还原

【Abstract】 According to the theory of traditional stratigraphy, tectonic movement, palaeogeographic changes and sedimentation, etc. are a unified process, and they stress that the process is unified in the concept of time. Howevr, it is very difficult to determine this stratigraphic classification in practical work. The lithostratigrapic unit and the biostratigraphic unit are often difficult to be unified in a fixed, time-parallel or time-epuivalent unit.This paper analyses some confusing problems caused by the theory of traditional stratigraphy in classifying and contrasting Mangshan quartz sandstone (Yue sen-xun, 1929 ) in southern Guizkou, and points out that the implications and uses of Mangshan quartz sandstone have not been unified yet. Therefore, based on the theory of multiple stratigraphic classification, the authors have discussed the diachronism of Mangshan quartz sandstone in southern Guizhou according to the historical data, drawn a palaeogeologic map of it, analysed the mechanism of forming diachronism, and tried dividing the lithostratigraphic unit. Finally, the lithostratigraphic unit-Mangshan quartz sandstone-is again defind.更多还原