摘要
研究区位于六盘山弧形构造带罗山逆冲席和贺兰山西缘深断裂交汇处。研究区内含煤地层为石炭系太原组,其太原组第三、四段为主要含煤岩段,含大部可采煤层10层,属较稳定煤层,煤类属高变质程度的无烟煤。受华北板块南北两侧板块俯冲碰撞的夹击作用下,及古特提斯构造域的扩张作用,造成了区内数次相对海平面变化,使研究区发育障壁滨海-三角洲平原沼泽相,沉积了分布较广的多层煤层,在基底差异性升降的影响下,含煤地层遭受了不同程度的剥蚀。
The study area is located in Liupanshan arc tectonic belt Luoshan and Helan margin thrust sheet and deep fracture interchange. Research on coal -bearing strata in the area as the carboniferous taiyuan fonnation, the taiyuan group of the third and fourth section as the main coal - bearing rock section, containing most of minable seam 10 layers, belong to the stability of coal seam, generic high metamorphic grade of anthracite coal. From north and south, the north China plate subduction collision flanked on both sides, and the expansion of the ancient Tethys tectonic domain, several relative sea level change, caused the area to make the study area, barrier coast - delta plain swamp facies developed in a wide distribution make the deposit in this area of the multilayered coal seam, the basal diversity under the influence of lifting, coal - bearing strata suffered varying degrees of erosion.
出处
《内蒙古煤炭经济》
2014年第1期210-212,共3页
Inner Mongolia Coal Economy
关键词
阿拉善
石炭系
含煤特征
聚煤规律
Alashan
Carboniferous
Occurrence characteristics
Regularities of coal accumulation
