鲁西地区浅水三角洲环境下的聚煤特征

Characteristics of coal accumulation under shallow water delta environment in western Shandong Province

在野外露头实测、钻井岩心观察及测井资料分析基础上,对鲁西地区早二叠世沉积特征进行分析,认为早二叠世以河控浅水三角洲沉积为主,其中三角洲平原广泛发育,分流河道极易识别。三角洲演化的最终结果会导致废弃,废弃后的三角洲平原广泛沼泽化,有利于煤炭的聚集。当构造环境适合时,三角洲废弃时间越长,聚煤作用越强。

On the base of field outcrops measuring,drilling core observation and logging data analysis,the paper analyses the depositional characteristics of Early Permian in Luxi.The final result of the delta evolution is abandonment,and the abandoned deltaic plain is beneficial to the coal accumulation.Under favorable structure factors,the longer the delta abandoned,the better the coal accumulation.