内蒙古黑山煤田太原组沉积环境与聚煤规律

Analysis of Sedimentary Environment and Regularities of Coal Accumulation,Heishan Coalfield,Inner Mongolia

以煤田地质学、现代沉积学理论为指导,运用大量钻孔资料分析了黑山煤田太原组沉积特征和沉积环境,鉴别了沉积相,探讨了聚煤规律。研究表明:黑山煤田太原组广泛发育泻湖及三角洲沉积体系,三角洲废弃阶段是聚煤最佳时期,三角洲平原是聚煤最佳场所。

By means of the theories of the coal geology and the modern sedimentotogy and based on the large amount of coring data, this paper analyzed the sedimentary environment and sedimentary characters, distinguished the sedi- mentary petrography and discussed the regularities of coal accumulation of Taiyuan formation in Heishan coalfield. The study showed that the delta depositional system was well developed in the investigative block,and the abandoned stage of the delta sedimentary system was the best time for coal accumulation,and the delta plain was the best place for coal accumulation.