关键词: 断层转折褶皱, 地质模型, 几何图解, 角度

Abstract: By analyzing on the geometry of fault-bend fold and the quantitative, a new geometry method is put forword for analyzing the angle relationship of fault-bend fold with circle and triangle. Considering on four common situations, including case of γ and θ are known, case of γ and β are known, case of θ and β are known, and case of θ and φ are known, the authors demonstrate their corresponding geometric construction method. Being used in an example and compared with the result of other methods, it shows that our geometry method is with the characteristic of easy construction and getting more accurate result, and this geometry method can help in advancing the accuracy of modeling and getting better result in application.

Key words: fault-bend fold, geologic model, geometric model, angle