Sediments in basins co nsist of grey coal-bearing formation composed of fluvial alluvial,proluvial fac ies,lacustrine-swamp facies.The material composition of sedim...

• 沉积物组成了山区河流冲洪积相、湖沼相的灰色含煤建造,其物质成分与基底岩石具明显继承性。