辽宁本溪田师傅早中石炭世沉积环境分析

Analysis of Early and Middle Carboniferous Sedimentary Environments in Tianshifu Area of Benxi,Liaoning

根据岩性特征、沉积序列、生物组合、砂岩粒度特征、泥岩地球化学性质以及粘土矿物特征， 分析了辽宁本溪田师傅地区早、中石炭世的沉积环境． 结果表明， 本区早、中石炭世沉积环境具明显的纵向演替： 早石炭世晚期， 主要为滨岸沼泽环境； 中石炭世早期， 主要为海湾—泻湖环境；

Based on lithologic characteristics,sedimentary sequence, fossil assemblages,grain size analysis of sandstone,microelement analysis and clay mineral analysis of mudstone,the original “Benxi formation” reveals a major and longitudinal change in sedimentary facies. The environment was a coastal swamp in late Early Carboniferous.In early Middle Carboniferous,the environment gradually became a lagoon gulf.In late Middle Carboniferous,the environment became a normal shallow sea.