期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：295
期号：2
页码：1-6
DOI：10.1088/1755-1315/295/2/012088
出版社：IOP Publishing
摘要：The distribution characteristics of coal seams and the main controlling factors of coal accumulation of the Middle Jurassic Yan'an Formation in Longdong area are analyzed in this paper based on geophysical logging data, drilling data and sedimentation background. The results show that the central and western parts of Longdong are the main development areas of coal seams, the coal seams are thick in the west and south, while they are thin in the east and north, and thickness of coal seams in this area ranges from 10m to 30m. The characteristics of sedimentary structure indicate that the warm and humid climate, palaeogeographic environment of swamp facies, palaeo-vegetation and late tectonic movement influenced the formation and distribution of coal in Longdong area. The study suggests that the coal resource in Longdong area is rich and preserved well, and its structure is simple, so it is favourable for exploration and has great economic potential.
