中文摘要：

运用沉积学和沉积地球化学方法对蒙阴盆地古近系进行了沉积特征及沉积环境演化研究,结果表明,蒙阴盆地常路组（E12＋3-E21ch）反映了河流和滨浅湖沉积环境,常一段的河流沉积较发育,常二段以滨浅湖为主,有沼泽化含煤和黏土沉积,常三段为滨湖沉积;w（V）/w（V＋Ni）,w（Sr）/w（Ba）,w（Mg）/w（Ca）等地球化学指标反映出常路组沉积时期虽总体处于水体弱分层的淡水环境,气候湿润,但存在小的波动,古盐度与古水深呈显著负相关关系,与蒙阴盆地古近纪封闭的山间盆地性质相吻合.此后的朱家沟组（E21 zh）为常路组沉积后地形迅速抬升的山麓冲洪积体系.蒙阴盆地古近纪演化过程主要受太平洋板块的俯冲影响而发生右行走滑的沂沭断裂和兰聊断裂的活动控制.

英文摘要：

Researches on paleogene of MengYin Basin were mainly concentrated in stratigraphic division and correlation,and few in a sedimentary environment.The sedimentary characteristics and environments of paleogene are studied using the methods of sedimentology and geochemistry.The results show that：ChangLu formation in Mengyin basin （E12＋3-E21ch） is developed with the fluvial and shore-shallow lacustrine facies,and Chang-1 member is mainly developed with fluvial deposits; member Chang-2 is with shore-shallow lacustrine facies with swamping coal-bearing clay deposits and Chang-3 member is with flooding lakeshore deposit.The geochemical indicators such as w（V）/w（V ＋ Ni）,w（Sr）/w（Ba）,w（Mg）/w（Ca） show that the deposits of ChangLu formation was mainly under a humid climate and a freshwater environment,existing small fluctuations.There was a significant negative correlation between paleosalinity and water depth,as Mengyin basin was a closed intermountain basin during Paleogene.The Zhujiagou formation （E21zh） belongs to the sediments of piedmont alluvial fan with orographic uplift after ChangLu period.The evolution of Mengyin basin during Paleogene was controlled by the dextral strike-slip of the Yishu fault and Lanliao fault,with the subduction of the Pacific plate.