Kink-Band Structure and Its Geophysical Forward Modeling
详细信息
- 责任者：Zhang Bo (Key Laboratory of Orogenic Belts and Crustal Evolution ; MOE ; School of Earth and Space Sciences ; Peking University ; Beijing 100871 ; China) ; Zhang Zhongpei
- 刊名：Acta Scientiarum Naturalium Universitatis Pekinensis
- 出版年：2012
- 卷期：48(1)
- 关键词：膝折褶皱 ; kink folds ; 地震剖面 ; seismic profiles ; 正演模拟 ; forward modelling
- 页码：p.105-115
- 图表：10 illus., 33 refs.
- 分类号：1600
- issnNo：ISSN0479-8023
- isbnNo：CN11-2442/N
摘要
Finite-difference method-single-shot record method is applied to forward-model kink-band models. Based on the analysis of forward modeling results and the features of seismic images response to the various kink-band belt models, the conclusions are summarized as follow: 1) in the seismic profile, kink-band belt is characterized by the substantial width of low-reflectivity, low-signal-to-noise zone and their sub-parallel edges in cross section; 2) their orientations at a high angle to layering can impact on the seismic imaging efforts; and 3) steeply or nearly vertical dipping bedding in the kink-band belt often misguide the reflection interface tracking by some overvalued and other false information.