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内蒙古玫瑰营子矿区古近纪聚煤规律分析
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摘要
内蒙古玫瑰营子矿区是近几年刚被发现的,笔者首次对该矿区古近纪的褐煤进行聚煤规律分析。矿区属于集宁-兴和盆地的一部,是从山区到山间盆地的过渡地带。笔者通过对矿区内大量钻孔资料的详细分析,运用现代沉积学理论,结合岩性特征、沉积构造、等划分沉积相的标志,认为该矿区的聚煤沉积相类型为辫状河三角洲平原亚相。褐煤就沉积在辫状河三角洲平原亚相中的辫状河道间的泥炭沼泽中。
The Meiguiyingzi mining area located at the edge of Jining-Xinghe basin in Inner Mongolia was found in recent years,and its coal accumulation patterns of lignite in Paleogene were firstly studied in this paper.Base on the modern sedimentological theory and lithologic characters and sedimentary structure from anabundant of core analysis,the signs of sedimentary facies were determined.The sedimentary facies of the research coal are braid-river delta plain subfacies.The lignitedeposited in the peat bogs located between the river channels formed in the braid-river delta plain subfacies.
引文
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