| 断层相关褶皱的几何学模型及其应用 |
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| 关键词:foreland thrust belt fault-related fold fault-bending fold fault-propogation fold geometric test |
| 基金项目:国家自然科学基金项目(编号:49832040) |
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| 摘要: |
| Geometric Models of Fault-related Folds and Their Application |
| There are two main types of fault-related folds in the foreland thrust belts, i. e. , fault-bending folds and fault-propagation-folds. Forthe brittle rock deformation, there exists quantitative geometric relationship between fault shape and fold shape. According to the specific angular function relationships of fault-related fold models, the natural geological structures and the interpretation of seismic sections can be analyzed and tested geometrically. Through examination of seismic-time sections it is found that the structure configurations always lose shapes from their natural structures, thus an effect on the validity of geometric tests will occur. The transformation from the seismic-time section into the seismic-depth section by seismic speed spectrum can be carried out to test the reasonabili-ty of the interpreted structures. The subsurface structure examples of the tests are given from the Tarim oil field in Kuqa basin. With the geometric analysis and tests of the subsurface structures, the authors have successfully interpreted and predicted the original existence of the fault-bending folds and fault-propagation folds in fault-related folds of Kuqa area. |
| CHEN Jian,LU Hua-fu,YU Jing-zong,WANG Sheng-li.2005.Geometric Models of Fault-related Folds and Their Application[J].Acta Geoscientica Sinica,26(1):89-92. |
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