Reactivity Features and Patterns of Basement Faults in the Qingdong Sag, Jiyang Depression
详细信息
- 责任者：Zhan Run (School of Resource and Environmental Engineering ; Hefei University of Technology ; Hefei 230009 ; China) ; Zhu Guang
- 刊名：Geological Review
- 出版年：2012
- 卷期：58(5)
- 关键词：基底构造 ; basement tectonics ; 济阳坳陷 ; Jiyang Depression
- 页码：p.816-828
- 图表：6 illus., 1 table, 35 refs.
- 分类号：0300
- issnNo：ISSN0371-5736
- isbnNo：CN11-1952/P
摘要
The Qingdong Sag of the Jiyang Depression is a Cenozoic faulted basin in the southern Bohai Bay Basin. The sag contains nearly EW, NW and NNE striking fault systems. The NW and NNE striking faults belong to basement faults respectively resulting from foreland deformation in the Indosinian period and the Tancheng-Lujiang （Tan-Lu） sinistral faulting in Late Jurassic. The sag was under NS extension and undergone intense rifting during the Paleogene, leading to formation of the EW faults. After more detail studies, reactivity patterns of the basement faults can be classed into three types, such as the direct activity, formation of new en echelon faults and direct activity plus propagating into EW faults. It can be seen that basement faults have important effect in the evolution and distribution of fault systems and sedimentary filling characteristic in a basin.