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扎格罗斯盆地因其丰富的油气资源和复杂的构造体系而深受国际石油界的重视,其中是否存在斜向逆冲断裂褶皱对于进一步深化盆地构造特征的认识至关重要.基于断裂相关褶皱理论,采用地层倾角域分析和褶皱轴面分析方法,系统地开展了扎格罗斯盆地Buzurgan背斜地震剖面的构造几何解析,获得了时间构造等T_0图、沿层时间域水平切片图和平行于断层走向的地震剖面图.在此基础上,依据斜向逆冲断裂褶皱的构造几何识别特征,解释出Buzurgan背斜的斜向逆冲断裂褶皱几何变形样式.最后通过计算机正演模拟,再现了Buzurgan背斜斜向逆冲断裂褶皱构造样式的成生过程,验证了斜向逆冲断裂褶皱解释的合理性和可靠性.
The Zagros basin is highly regarded by the international oil community because of its rich oil and gas resources and complicated structural system. Whether the diagonal thrust fault folds exists is very important to further deepen the understanding of structural features of the basin.Based on the fracture-related fold theory , Using the analysis of stratigraphic dip field and fold axis analysis, the tectonic geometry analysis of the Buzurgan anticline seismic profile in the Zagros basin has been systematically carried out. The T_0 maps such as time structure, horizontal slices along the horizon and parallel to faults Based on this, according to the geometric identification features of oblique thrust fault fold, the geometric deformation pattern of Buzurgan anticline is deduced. At last, through the forward modeling of computer, the reconstruction of Buzurgan The succession of the diagonal thrust fault fold structure in the anticline shows the rationality and reliability of the interpretation of the diagonal thrust fault fold.