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上二迭统在我国东南地区分布甚广,含有主要可采煤层,是该区主要勘探对象。因而,对其详细研究,将为探讨晚二迭世古地理、成煤规律提供依据。近十余年来,关于我国东南地区龙潭组的划分、对比存在着许多分歧意见。本文在论述东南地区上二迭统对比的基础上,对二叠系二分或三分及大隆组的层位等问题,提出一些粗浅认识,供进一步研究参考。
The Upper Second Permian is widely distributed in the southeast region of our country and contains major recoverable seams. It is the main target of exploration in this area. Therefore, its detailed study will provide a basis for the study of late Permian paleogeography and coal formation laws. In the past ten years or so, there have been many differences on the division of the Longtan Group in the southeast region of our country. Based on the comparison of the Upper Permian and the Upper Permian in Southeast China, this paper presents some superficial understandings on the problems such as the bedding positions in the Permian dichotomy or third and Dalong Formation for further reference.