摘要
从区域沉积背景入手,以岩心资料为主,结合野外地质剖面、测井资料、岩性特征、沉积构造特征,分析了鄂尔多斯盆地西南部山西组一段的沉积相展布特征和沉积相模式,在研究区山西组一段共识别出3种相、5种亚相和10种微相。此外,以单井剖面沉积相、连井剖面沉积相以及平面相所展现出来的沉积特征和演化规律为基础,以沉积学原理为指导,确定了研究区山西组一段为缓坡型浅水曲流河-三角洲-湖泊环境的沉积相模式和砂体展布规律,为该研究区后期勘探提供地质理论基础。
The method of macro and micro geological evidence of the unification of sedimentary facies analysis is used,from the regional sedimentary background of the core material,combined with a field geological section,logging data,lithologic features,sedimentary structure characteristics,the sedimentary characteristics of facies pattern of Shanxi Formation are analyzed.In the research area of Shanxi Formation,three Sedimentary facies,five parfacies and ten sedimentary facies are obtained,In addition,the sedimentary characteristics and evolution of sedimentary facies of single well,profile of sedimentary facies of the well and the plane are shown as the basis,the sedimentary theory is used as guidance to determine the research area of Shan 1 Section which has a gentle sloping with shallow meandering river-delta-lakes facies pattern.The research provides a geological foundation for later exploration.
出处
《长江大学学报（自科版）（中旬）》
CAS
2013年第3期37-40,5,共4页
Journal of Yangtze University(Nature Science Edition)
关键词
鄂尔多斯盆地
山西组一段
沉积相
沉积相模式
Ordos Basin
Shan 1 Section
sedimentary facies
sedimentary facies pattern
