Stratigraphic Division between Xujiahe Formation and Zhenzhuchong Member in the NE Part of Central Sichuan Basin
详细信息
- 责任者：Zhao Xiafei (Chengdu University of Technology ; Chengdu 610059 ; China) ; Gong Changming
- 刊名：Acta Sedimentologica Sinica
- 出版年：2011
- 卷期：29(4)
- 关键词：地层划分 ; stratigraphic classification ; 须家河组 ; Xujiahe Formation ; 四川 ; Sichuan Province
- 页码：p.631-643
- 图表：8 illus., 2 tables, 13 refs.
- 分类号：1200
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
Studies of the corresponding seismic data revealed the division plane is a sequence boundary (SB)(T3x truncated by the boundary and along which J1z onlaps). Sedimentary facies: the differences between T3x and J1z are thought to be derived from original sedimentary environments, the authors attribute T3x to shallow sea and estuarine origin and J1z to lacustrine delta system. The two successions are also different from each other in well-logging responses and can be easily discerned. This paper proved that to judge the reached stratigraphic level during well-drilling swiftly on the basis of cutting information can be achieved.