贵州晚二叠世各煤田沉积环境及聚煤规律分析

Analysis of Sedimentary Environment and Coal Accumulation Regularity of Late Permian Coalfields in Guizhou

根据贵州各地沉积基底特性以及含煤地层的岩性、岩相、含煤性及构造等可将贵州晚二叠世含煤沉积区域分为9大煤田,并分别对各煤田聚煤古地理类型、沉积相、沉积体系、聚煤作用等进行了综合分析和研究,确立了贵州省各煤田所处沉积相带,评价了各煤田煤层的成煤规律、赋存状态及含煤性,为今后煤炭资源勘查特别是普查找煤方向提供了理论支持。

According to the characteristics of sedimentary basement and the lithology, lithofacies, coal-bearing property and structure of coal-bearing strata in Guizhou, the late Permian coal-bearing sedimentary areas in Guizhou can be divided into 9 major coalfields. In addition, the coal-accumulating palaeogeographic types, sedimentary facies,sedimentary systems and coal-accumulating processes in each coalfield are comprehensively analyzed and studied,and the sedimentary facies belts of each coalfield in Guizhou province are established, and the coal-forming regularity,occurrence state and coal-bearing property of coal seams in each coalfield are evaluated. It provides theoretical support for coal resources exploration, especially for the direction of coal exploration in general survey in the future.