| Lianyuan-Shaoyang Coalfield is located Changsha-Shaoyang fault depression the central and western in the South China fold belt north to south, It is west prominent arcuate structure that a series of relatively Closed anticline and Short axis syncline composed, accompanied by the overthrust fault, overall is the North East～NNE trending. Lianyuan-Shaoyang Coalfield is one of the major coal production bases of Hunan province, The Ceshui Coal of the Early Carboniferous is the main coal-bearing strata in this area. local coal reserves of this area is serious shortage after being development and utilized for years. Therefore, the sedimentary environments and coal accumulation rule on the Ceshui Coal strata of the Early Carboniferous on the area, has a guiding significance to further develop the system, scientific research and analysis, which will in the future the region coal.Based on the comprehensive collection and analysis of the research results of the previous geological data, this paper presented the methods and principles of the application of coal basin analysis and combination of stratigraphy, sedimentology, petrology and sequence stratigraphy theory.Lianyuan-Shaoyang Coalfield Early Carboniferous coal-bearing strata of the Ceshui Coal rock type, lithological characteristics and sedimentary structures were analyzed in detail in the paper conducted the division of the deposition system and the comprehensive The deposition of the sedimentary system characteristics and spatial distribution law were revealed in the paper.Analysis results shown that the coal environment of Early Carboniferous Ceshui Coal barrier island-lagoon depositional systems, tidal flat, lagoon, tidal channels, barrier dam, peat swamp, foreshore outside the muddy continental shelf and other types of sedimentary facies were peat swamp. Coal-bearing stratigraphic sequence stratigraphic framework and distribution characteristics were presented in the paper.The author pointed out that the distribution of coal seams in the sequence stratigraphic framework, and made a paleogeographic map of the facies. Finally, according to the study area of the paleo-tectonic, paleogeographic, paleoclimate and ancient plants that are the relationship between and the evolution of the depositional environment, the author summarize the law of coal accumulation, and pointed out the Ceshui Coal of the Early Carboniferous measures in the future looking for coal work preferred district. |
