Coal Facies Characteristics and Coal Formation Mechanism of No. 38 Coal Seam in Cuipingshan Coal Mine
International Journal of Economy, Energy and Environment
Volume 3, Issue 5, October 2018, Pages: 45-50
Received: Dec. 5, 2018;
Published: Dec. 6, 2018
Views 231 Downloads 25
Fumei Xu, School of Resource Engineering, Longyan University, Longyan, China
Lin Jiang, School of Resource Engineering, Longyan University, Longyan, China
Daoliang Bao, School of Resource Engineering, Longyan University, Longyan, China
Follow on us
No. 38 coal seam is the main coal seam in Cuipingshan Coal Mine. In order to reveal its coal-forming mechanism, the microlithologic types of No. 38 coal seam in Cuipingshan Coal Mine are analyzed by using modern testing methods such as sequence stratigraphy, coal petrology and geochemistry. We find that the maceral of No. 38 coal seam is mainly vitrinite, the average content is respectively 57.28%, the vitrinite is mainly telinite and desmocollinite, and the microlithotypes is semi-bright coal. The coal facies of the No. 38 coal seam include tidal flat-tidal channel wet forest swamp facies, shoreland lacustrine wet forest swamp facies and barrier island-lagoon low swamp facies. The formation background of coal seam is an environment of shoreland lacustrine facies, barrier island~lagoonfacies and tidal flat-tidal channel swamp facies, etc., which are sea-land transitional facies. The shoreland lacustrine wet forest swamp facies and barrier island-lagoon low swamp facies are the main coal facies types of the No. 38 coal facies in the region of interest and are distributed throughout the whole coal seam section. This indicates that it always predominated in the evolutionary process of swamp. The tidal flat-tidal channel wet forest swamp facies also accounted for a certain proportion in the formation process of coal seam, and constitutes periodic cycle structure with the shoreland lacustrine wet forest swamp facies and barrier island-lagoon low swamp facies. Generally the coal formation mechanism of No. 38 coal seam is a regressive swamp development process, and its coal formation environment is tidal flat-tidal channel swamp and shoreland lacustrine swamp. Besides, the development process of peat swamp is influenced by the frequent advance and retreat of secondary seawater.
Coal Facies Characteristics, Coal Formation Mechanism, Peat Swamp, Evolutionary Pattern, Cuipingshan Coal Mine
To cite this article
Coal Facies Characteristics and Coal Formation Mechanism of No. 38 Coal Seam in Cuipingshan Coal Mine, International Journal of Economy, Energy and Environment.
Vol. 3, No. 5,
2018, pp. 45-50.
Zhou QY, Shao LY, Chen ZX, et al, 2016 Depositional environments and coa1-accumulation characteristics of the Upper Triassic Xujiahe Formation in the northern segment of Huaying Mountain, Sichuan Basi Journal of China Coal Society 3 703-711.
Hou X X, Tang Y G, Son X X, et al, 2013 Coal petrology and coal facies of Zhongliangshan mining area, Chongqing Coal Geology & Exploration 5 6 - 10.
Lu J, Shao L Y, Yang M F, et al, 2014 Coal facies evolution, sequence stratigraphy and palaeoenvironment of swamp in terrestrial basin Journal of China Coal Society12 2473-2481.
Dai S F, Zhou Y P, Ren D Y, et al, 2007 Late permian coal geochemistry and mineralogy characteristic and origin in Songzao coalfield of Chongqing Science in China (Series D: Earth Sci2ences)3 353 - 362.
Li J, Zhuang X G, Zhou J B, He YL, 2012 Coal facies characteristic and identification of transgressive/regressive coal-bearing cycles in a thick coal seam of Xishanyao formation in eastern junggar coal field, Xinjiang Journal of Jilin Unviersity:Earth Science Edition 2 104-114.
Wang Y, Li L Q, Zhang X Q 2016 Inertinite of Coal-Rocks and Its Application to the Paleoenvironment Reconstruction of Peat and M ire Geological Revie2 375 - 380.
Wu C Q 1984 Research on Longyong coal seam deformation characteristics and deformational factors Coal Geology & Exploration 6 34 - 35.
Wei D G, Jie Y J, Huang T G, 1997 Regional geological structure of fujianRegional geology of china 2 162-170.
Diessel C F K 1986 On the correlation between coal facies and depositional environment Advances in the Study of the Sydney Basin, Proceedings of 20th Symposium of University of Newcastle 19-22.
Moore T A, Stanton R W, et, al, 1990 Maceral and Palynomorphfacies from two Tertiary peat-forming enviroments in the Powder River Basin, U.S.A Int. J. Coal Geo. 15 293-316.
Stach, E, Mackowsky. M. TH., Teichmuller. M., Taylor. G. H, Chandra. D, Techmuller. R 1982 Stach’s text book of Coal Petrology, GenruderBorntraeger, Germany.