中南大学学报（自然科学版）2011，Vol.42Issue(12)：3818-3826,9.
松辽盆地肇源—太平川地区白垩系姚家组一段沉积特征及演化
Sedimentary characteristics and evolution of member 1 of Yaojia Formation of cretaceous in Zhaoyuan-Taipingchuan area of Songliao Basin
摘要
Abstract
According to the theory of high-resolution sequence stratigraphy, the sequence stratigraphic framework in Member 1 of Yaojia Formation of Zhaoyuan-Taipingchuan area was built up through the comprehensive research on core, seismic, log and analysis assay. Member 1 of Yaojia Formation was divided into three completely-developed sequences which were constituted by three system tracts: low stand systems tract, transgressive systems tract and high stratigraphic framework were also discussed, confirming the shallow water delta sedimentary system in member 1 of stand systems tract. The characteristics of sedimentary micro-facie and distribution were ascertained in the sequence Yaojia Formation in cretaceous. Three sub facies (delta plain, delta front and prodelta), and eleven sedimentary micro-facies (branch channel, natural levee, crevasse splay, distributary interchannel, flood plain, underwater distributary channel and interbay, subaqueous crevasse splay, mouth bar, distal bar and sheet sand) were identified. The delta plain and delta front are widely developed, but the prodelta is poor. By depositing and frequent bifurcation, the branch channels in delta plain are advanced toward the basin center with long-distance, and developed abundant underwater distributary channels in the shallow water area of delta front. Dendrites sand body is formed through the cutting and stacking between distributary channels and sandstone in the underwater distributary channel sand body. In this way, underwater distributary channel sand body constitute the reservoir body of hydrocarbon enrichment. Precise research on the sedimentary facie in this area will establish the foundation for further petroleum exploration and development.关键词
松辽盆地/肇源—太平川/白垩系/姚家组一段/层序地层格架/沉积微相/水下分流河道Key words
Songliao Basin/ Zhaoyuan-Taipingchuan/ cretaceous/ first formation of Yaojia Group/ sequence stratigraphic framework/ sedimentary micro-facie/ underwater distributary channels分类
天文与地球科学引用本文复制引用
李占东,卢双舫,李军辉,肖佃师,陈海峰,李阳..松辽盆地肇源—太平川地区白垩系姚家组一段沉积特征及演化[J].中南大学学报（自然科学版）,2011,42(12):3818-3826,9.基金项目
教育部博士点基金资助项目(20050220001) （20050220001）
