山东巨野煤田早二叠世沉积环境及演化分析

ANALYSIS OF SEDIMENTARY ENVIRONMENT AND EVOLUTION IN JUYE COAL FIELD IN EARLY PERMIAN

摘要:

通过对山东巨野煤田煤系地层之岩性、沉积构造、古生物特征、测井曲线、微量元素及粒度概率曲线等资料的综合分析，认为该煤田早二叠世时处于以河控作用为主，兼受潮汐作用影响的浅水三角洲环境。沉积环境经历了水下三角洲平原、边缘三角洲潮汐平原、边缘三角洲沼泽平原、下三角洲平原、上三角洲平原五个沉积阶段，总体构成了一个进积序列，反映了由浅海相→过渡相→陆相的沉积演化过程。

Abstract:

Juye coal field located in west of Shandong.By the comprehensive analysis of lithology,sedimentary structure,paleobiography characteristics,logging curve,trace elements and probability curve of the strata in Juye coal field,it is recongnized that the coal field formed in shallowwater delta environment which was mainly controlled by river,partially effected by tide from mid to late stage of early Permian.The sedimentary environment experienced five sedimentary stages,that is,under water delta plain,marginal ...