摘要
通过对依兰矿区地质背景和老第三纪含煤地层沉积特征的综合分析,认为该区含煤段古地理类型主要为冲积扇—扇三角洲平原—滨浅湖环境。在初期填平补齐作用后,形成了具有工业价值的达连河组下含煤段的上、中、下三个煤层群。
Through an integrated analysis of geological setting and Paleogene coal-bearing strata sedimentary characteristics, the author considered that the coal-bearing section＇s paleogeographic type in the area is mainly alluvial fan - fan-shaped delta plain - littoral shallow lake environment. After initial stage filling up and leveling, swamping had happened in vast low and flat flood plains, provided with favorable sites for peat accumulation. In this way formed upper, middle and lower three mineable coal seam groups in the lower Dalianhe Formation.
出处
《中国煤田地质》
2006年第3期20-22,共3页
Coal Geology of China
关键词
老第三纪
聚煤环境
聚煤模式
依兰煤田
Paleogene
coal-accumulating environment
coal-accumulating model
Yilan coalfield
