Formation Controlling Factors and Evolution Characteristics of Qikou Sag
详细信息
- 责任者：Chen Xianbao (Research Institute of Exploration and Development ; Dagang Oilfield Company ; PetroChina ; Tianjin 300280 ; China) ; Han Xin
- 刊名：Fault-Block Oil and Gas Fields
- 出版年：2013
- 卷期：20(5)
- 关键词：构造演化 ; structural evolution ; 黄骅坳陷 ; Huanghua Depression
- 页码：p.560-563
- 图表：3 illus., 14 refs.
- 分类号：0300
- issnNo：ISSN1005-8907
- isbnNo：CN41-1219/TE
摘要
Combined with the knowledge from predecessors and based on the latest research results of 5,280 km2 super large 3D seismic data volume,core and well logging data from Qikou Sag in Huanghua Depression,it is considered that the structure development of Cenozoic basin in Qikou Sag is controlled by folding,thrust structure,dextral strike slip fault movement,coastal strike slip fault zone and volcanic rock.The depression approximately transforms from fault basin to depression basin and there are two times of tectonic movements in fault basin and depression basin,in which there are three unconformity interfaces.The sedimentary characteristics are obvious different at the up and down unconformity.There are obvious different from terrestrial subsidence to thalassic subsidence.The nearly north and south terrestrial subsidence formation is north-wreckage and south-onlap domino half-graben formation.Thalassic subsidence is large compound graben and the thalassic subsidence is faster than that of terrestrial subsidence.
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