【摘要】 根据岩心、测井解释、录井资料和地震资料,对姚一段的沉积微相类型、展布特征及其沉积演化规律进行了系统研究,结果表明黒帝庙地区姚一段发育浅水三角洲沉积体系。本次研究建立了浅水三角洲沉积体系的沉积模式,其可划分出浅水三角洲平原、浅水三角洲前缘和前浅水三角洲,根据不同的沉积特征,各亚相可进一步划分为多种沉积微相。与正常三角洲不同的是,浅水三角洲前缘河口沙坝不发育,且在该地区前浅水三角洲地带发育出露湖面的浅滩。更多还原

【Abstract】 According to core observation,logging data and seismic survey,the sedimentary facies types of the 1st member of Yaojia Formation,distribution and evolution of Heidimiao area were studied systematically.The research showed shallow-water delta facies deposited in the 1st member of Yaojia Formation.The model of the shallow-water delta sedimentary system of the region of interest was established.Shallow-water delta could be divided into shallow-water delta plain,shallow-water delta front and prodelta.Based on the different sedimentary characteristics,different subfacies conld be further divided into a variety of sedimentary facies.Different from normal delta,distributary mouth bar was poorly developed in the shallow-water delta front,and shoal patch develop in the prodelta which exposed the shallow lake.更多还原