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以贵州省织金矿区四个含煤向斜构造单元勘查资料为基础,对该区晚二迭世晚期沉积特征进行分析,认为区内广泛发育砂泥潮坪相和碳酸盐潮坪相。由于海水影响程度的差异,二者在岩石类型、层理、生物化石、自生矿物、元素地球化学特征等方面特征明显,主要表现在前者更多地具有陆相沉积特征,后者则更多地体现海相沉积的特点。砂泥潮坪相之上常发育较好的可采煤层,煤层硫分也较低,而碳酸盐潮坪相则正好相反,因此在研究区找煤时,建议重点放在砂泥潮坪相发育的区域。
Based on the exploration data of four coal-bearing synclinal tectonic units in Zhijin gold mine in Guizhou Province, the sedimentary characteristics of the late Permian in this area are analyzed. It is considered that the sand tidal flat and carbonate tidal flat . Due to the difference of the degree of influence of seawater, both of them have obvious characteristics in the aspects of rock type, stratification, biological fossils, authigenic minerals and elemental geochemical characteristics, mainly because the former has more continental depositional features and the latter more Reflect the characteristics of marine sediments. On the sand tidal flat facies, good recoverable seams are often developed, and the sulfur content of the coal seams is also low, while the carbonate tidal flat facies is the opposite. Therefore, when looking for coal in the study area, it is suggested to focus on the sand mud tide Porphyry area.