湖南省攸县黄兰矿区龙潭组上下段界线划分

Boundary Division of the Upper and Lower Section of Longtan Formation in Huanglan Mining Area in Youxian County,Hunan Province

湖南省攸县兰村矿区龙潭煤系下段含可采煤层,通过对其地质背景、沉积特征、龙潭组地层层序特征以及可采煤层特征的研究表明:兰村矿区龙潭煤系主要形成于中二叠世晚期的层序2海侵体系域阶段,古环境对煤层形成的控制作用较为明显,与其相邻的黄丰桥矿区在地质背景、沉积特征、煤层成因等方面均具有一定的可比性。在此基础上,对黄兰矿区(黄丰桥矿区与兰村矿区)龙潭组上下段界线划分标准进行了讨论,可为黄兰矿区边部深部找煤提供可靠依据。

The minable coal seam is distributed in the lower section of Longtan formation coal series in Lancun Mining Area in Youxian County, Hunan Province. The geological background, sedimentary characteristics, stratigraphic sequence characteristics of Longtan Formation, characteristics of minable coal seams of Huanglan Mining Area are discussed in detail, the results show that ： Longtan coal series of Lan- cun Mining Area is formed in the stage of transgression system （ sequence 2） of Late Permian, the control- ling effects of ancient environment to coal seam formation is significant, which is similar to the geological background, sedimentary characteristics and coal seam genesis of Huangfengqiao Mining Area. Based on the above discussion results, the boundary division standard of the upper and lower section of Longtan formaiton in Huanglan Mining Area （Huangfengqiao Mining Area and Lanfeng Mining Area） is analyzed, so as to provide some reliable for the edge and deep prospecting of coal seam in Huanglan Ming Area.