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Seismic Interpretation of Growth Fault and Salt Diapirism in Qianjiang Sag, Jianghan Basin, Southeastern China
| Content Provider | Open Access Library (OALib) |
|---|---|
| Author | Aida Bensekhria Fei Qi Wanzhong Shi Yeping Zhan |
| Abstract | Qianjiang depression is one of the most faulted lacustrine depressions in southeastern China. This study considered the main faulting influencing the different sedimentary rocks, the causes of this faulting and the relationship of faulting to salt diapirism. To satisfy research needs, 3D seismic data have been used, where four seismic section profiles were chosen. Northeastward salt domes aligning along the depression center showed evidence of active diapirism and a normal growth fault has been continually active at least since the middle Eocene. This steep fault extended deeply to a strong reflection event that may represent the base of the salt layer. It can be inferred that faulting is caused by basinward flow of salt from the deep part of the depression into domes, there by creating a great difference in hydrostatic pressure between the upthrown (uplifted area) and the downthrown (depression area) sides of the fault and, by removing support for the over lying block of sedimentary rocks. |
| ISSN | 18125654 |
| Journal | Journal of Applied Sciences |
| Publisher | Asian Network for Scientific Information |
| Publisher Date | 2009-01-01 |
| Access Restriction | Open |
| Subject Keyword | Growth fault Sedimentary rocks Diapirism Salt domes Hydrostatic pressure Lacustrine |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
