【摘要】 以钻井岩心、测井数据及地震资料为基础,运用岩相古地理学、地震地层学、层序地层学等学科方法原理,对塔里木盆地下奥陶统蓬莱坝组沉积相特征进行研究,认为下奥陶统蓬莱坝组发育局限台地相、开阔台地相、台地边缘相、斜坡相和盆地相.局限台地主要分布在塔中、塔东及塔西南大部分地区,开阔台地只在塔北局部地区发育.对钻井岩心、薄片资料、连井剖面、地震相进行综合分析研究后,绘制出蓬莱坝组沉积相平面展布图,据该组沉积相平面展布规律,综合考虑该时期沉积演化及古地理背景,建立起塔里木盆地下奥陶统蓬莱坝组沉积相模式.更多还原

【Abstract】 With drilling core data,logging data and seismic data as the foundation,we did a series of research on Sedimentary characteristics of tarim basin’s Lower Ordovician Penglaiba group according to the methods and principles of lithofacies paleographic stratigraphy,seismic stratigraphy and sequence stratigraphy etc.It is pointed out in the paper that Tarim basin’s Lower Ordovician Penglaiba group developed the restricted platform facies,open platform facies,margin of platform facies,slope phase,basin facies,the restricted platform facies is mainly distributed in central,eastern and Southwest in most areas of Tarim basin.Through the study on drill core,core wafer and seismic facies,draw the distribution of sedimentary facies of Penglaiba group.Established sedimentary facies pattern of tarim basin’s Lower Ordovician Penglaiba group,after considering the distribution rule of sedimentary facies of Penglaiba group,Sedimentary evolution and palaeogeographic background of this period.更多还原