一种断层相关褶皱定量建模的方法及应用
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摘要
中国中西部前陆冲断带地表、地下构造复杂,地震资料成像品质普遍较差。针对复杂前陆冲断带的断层相关褶皱,提出了一种在构造复杂、地震资料品质较差地区褶皱的定量构造建模方法,即应用地震波动方程正演、平衡地质剖面数值模拟、构造物理模拟等技术,分步骤求取构造几何学、运动学参数,建立最终的定量化构造模型,从构造变形量、变形机制、变形时间和变形过程4个方面揭示构造变形特征。应用该方法对准噶尔盆地南缘独山子背斜进行定量化建模,确定独山子背斜几何学与运动学构造参数,取得了较好的应用效果。
Due to the complexity of surface geological condition and subsurface structure of the thrust belts of foreland basins in central and western China,the qualities of seismic data imaging are generally poor.In view of this situation,a quantitative tectonic modeling method was put forward.The techniques such as seismic wave forward modeling,balanced geologic section numerical simulation and structural physical simulation were applied to establish the final quantitative model.The tectonic deformation characteristics were analyzed from the aspects of the amount of deformation,deformation mechanism,deformation time and deformation process.The proposed method was applied to determine the geometry and kinematic structural parameters in Dushanzi anticline in southern margin of Junggar Basin,and good results have been achieved.
Due to the complexity of surface geological condition and subsurface structure of the thrust belts of foreland basins in central and western China,the qualities of seismic data imaging are generally poor.In view of this situation,a quantitative tectonic modeling method was put forward.The techniques such as seismic wave forward modeling,balanced geologic section numerical simulation and structural physical simulation were applied to establish the final quantitative model.The tectonic deformation characteristics were analyzed from the aspects of the amount of deformation,deformation mechanism,deformation time and deformation process.The proposed method was applied to determine the geometry and kinematic structural parameters in Dushanzi anticline in southern margin of Junggar Basin,and good results have been achieved.
引文
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[16]Shaw J H,Hook S C,Suppe J.Structural trend analysis by axial surface mapping[J].AAPG Bulletin,1996,78(5):700-721.
[17]兰晓雯,晏信飞,吴何珍,等.隐伏活断层地震勘探正演模拟方法[J].现代地质,2009,23(6):1160-1166.
[18]张冰,颜丹平,宋鸿林,等.断层褶皱要素对隐伏滑脱层深度及几何样式的约束:数学分析及其在重庆地区薄皮构造中的应用[J].现代地质,2008,22(5):779-786.
[19]张玉兰,王伟锋,马宗晋.准噶尔盆地南缘构造物理模拟实验[J].石油大学学报:自然科学版,2003,27(3):1-5.
[20]陈涛,魏东涛,杨海波,等.准南前陆冲断带构造特征及其对油气成藏的影响[J].天然气地球科学,2006,17(5):711-718.
[2]何登发,杨庚,管树巍,等.前陆盆地构造建模的原理与基本方法[J].石油勘探与开发,2005,32(3):7-14.
[3]Suppe J.Principles of structural geology[M].New Jersey:PrenticeHall,1985:341-367.
[4]何登发,Suppe J,贾承造.断层相关褶皱理论与应用研究新进展[J].地学前缘,2005,12(4):353-364.
[5]舒良树.普通地质学[M].北京:地质出版社,2010:114-115.
[6]Suppe J.Geometry and kinematics of fault-bend folding[J].American Journal of Science,1983,283(7):684-721.
[7]Suppe J,Medwedfff D A.Geometry and kinematics of fault-propagation folding[J].Ecolgae Geologicae Helvetiae,1990,83(3):409-454.
[8]Hardy S,Poblet J.Geometric and numerical model of progressive limb rotation in detachment folds[J].Geology,1994,22:371374.
[9]Narr W,Suppe J.Kinematics of basement-involved compressive structures[J].American Journal of Science,1994,294(7):802-860.
[10]Erslev E A.Trishear fault-propagation folding[J].Geology,1991,19(6):617-620.
[11]Hardy S,Ford M.Numerical modeling of trishear fault-propagation folding[J].Tectonics,1997,16(5):841-851.
[12]ShawJH,Connors C,Suppe J.Seismic interpretation of contractional fault-related folds:An AAPG seismic atlas[M].Tulsa:American Association of Petroleum Geologists,2005.
[13]贾承造.中国塔里木盆地构造特征与油气[M].北京:石油工业出版社,1997.
[14]卢华复,贾东,陈楚铭,等.库车新生代构造性质和变形时间[J].地学前缘,1999,6(4):215-221.
[15]汪新,贾承造,杨树峰.南天山库车褶皱带构造几何学和运动学[J].地质科学,2002,37(3):372-384.
[16]Shaw J H,Hook S C,Suppe J.Structural trend analysis by axial surface mapping[J].AAPG Bulletin,1996,78(5):700-721.
[17]兰晓雯,晏信飞,吴何珍,等.隐伏活断层地震勘探正演模拟方法[J].现代地质,2009,23(6):1160-1166.
[18]张冰,颜丹平,宋鸿林,等.断层褶皱要素对隐伏滑脱层深度及几何样式的约束:数学分析及其在重庆地区薄皮构造中的应用[J].现代地质,2008,22(5):779-786.
[19]张玉兰,王伟锋,马宗晋.准噶尔盆地南缘构造物理模拟实验[J].石油大学学报:自然科学版,2003,27(3):1-5.
[20]陈涛,魏东涛,杨海波,等.准南前陆冲断带构造特征及其对油气成藏的影响[J].天然气地球科学,2006,17(5):711-718.
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