松辽盆地茫汉凹陷构造特征分析
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摘要
以松辽盆地茫汉凹陷为对象,采用构造-地层分析方法,通过对多条地震剖面的二维构造-地层解译、平衡恢复,伸展量和伸展率计算,揭示茫汉凹陷的发育过程,分析盆地总体结构特征和盆地形成机制。研究表明,茫汉凹陷表现为明显的断坳叠置结构:下白垩统九佛堂组、沙海组及阜新组为受断裂控制断陷盆地,泉头组至嫩江组为坳陷盆地,两侧的控盆断裂已不控制盆地沉积,沉积范围向两侧扩大,地层向盆地边缘超覆。构造由深至浅趋于简单,深层构造较为复杂,断裂发育,而浅层为一简单的、平缓的坳陷构造形态。茫汉凹陷盆地结构充分显示了盆地发育受控于左旋转换伸展。
By means of structure-stratigraphy method,through systematic 2 dimension structure-stratigraphy interpretation of several seismic sections,structure-stratigraphy balance recovery,and calculating extension quantity and extension rates,the developing process of Manghan sag is revealed and the tectonic features and forming mechanisms of the basin are analyzed.The results show that Manghan sag is a fault depression superimposed structure.The fault depression is mainly controlled by the faults in the Lower Cretaceous Jiufotang group,Shahai group and Fuxin group periods,and the fault depression turned into depression basin which was not controlled by the faults on both sides of the basin,and its scope of deposition is extended to the both sides,and the strata onlapped to the basin margin from Quantou group to Nenjiang group.The basin structure becomes simple from deep to shallow,and the deep structure is complicated relatively with faults and the shallow structure is simple and flat form of depression structure.Manghan sag structure characteristic fully reveals that the basin developing was controlled by the extension of the sinistral transformation.
By means of structure-stratigraphy method,through systematic 2 dimension structure-stratigraphy interpretation of several seismic sections,structure-stratigraphy balance recovery,and calculating extension quantity and extension rates,the developing process of Manghan sag is revealed and the tectonic features and forming mechanisms of the basin are analyzed.The results show that Manghan sag is a fault depression superimposed structure.The fault depression is mainly controlled by the faults in the Lower Cretaceous Jiufotang group,Shahai group and Fuxin group periods,and the fault depression turned into depression basin which was not controlled by the faults on both sides of the basin,and its scope of deposition is extended to the both sides,and the strata onlapped to the basin margin from Quantou group to Nenjiang group.The basin structure becomes simple from deep to shallow,and the deep structure is complicated relatively with faults and the shallow structure is simple and flat form of depression structure.Manghan sag structure characteristic fully reveals that the basin developing was controlled by the extension of the sinistral transformation.
引文
毕素萍,张庆龙,王良书,等.2008.松辽盆地宾县凹陷平衡剖面恢复及构造演化分析[J].石油实验地质,30(2):203-206.
程三友.2006.中国东北地区区域构造特征与中、新生代盆地演化[D].北京:中国地质大学.
单伟,刘少峰,吴键.2009.松辽盆地南缘长岭凹陷断陷层的构造特征与应变模式[J].地质通报,28(4):431-438.
高瑞琪,蔡希源.1997.松辽盆地油气田形成条件与分布规律[M].北京:石油工业出版社:63-76.
黄发木,闫亮,龚明.2008.开鲁地区茫汉断陷断陷层沉积相研究[J].内蒙古石油化工,9:150-151.
苏玉山,高金慧,李淑筠,等.2008.松南—辽西地区中生代盆地发育特征及含油气性评价[J].现代地质,22(4):505-519.
张晓东,王颖,李桂荣.2005.北方侏罗、白垩系盆地形成、演化及地球动力学背景[J].大庆石油地质与开发,(5):6-8.
张玉明.2006.茫汉断陷烃源岩特征及生烃潜力分析[J].天然气工业,26(10):30-32.
赵国柱,胡望水,杨申谷,等.2008.辽河油区外围龙湾筒凹陷碎屑岩储层特征研究[J].地质学报,8(1):24-29.
Sengor A M C,Natal’in B A,Burtman V S.1993.Evolution of the Altaid tectonic collage and Palaeozoic crustal growth in Eurasia[J].Nature,364:299-307.
程三友.2006.中国东北地区区域构造特征与中、新生代盆地演化[D].北京:中国地质大学.
单伟,刘少峰,吴键.2009.松辽盆地南缘长岭凹陷断陷层的构造特征与应变模式[J].地质通报,28(4):431-438.
高瑞琪,蔡希源.1997.松辽盆地油气田形成条件与分布规律[M].北京:石油工业出版社:63-76.
黄发木,闫亮,龚明.2008.开鲁地区茫汉断陷断陷层沉积相研究[J].内蒙古石油化工,9:150-151.
苏玉山,高金慧,李淑筠,等.2008.松南—辽西地区中生代盆地发育特征及含油气性评价[J].现代地质,22(4):505-519.
张晓东,王颖,李桂荣.2005.北方侏罗、白垩系盆地形成、演化及地球动力学背景[J].大庆石油地质与开发,(5):6-8.
张玉明.2006.茫汉断陷烃源岩特征及生烃潜力分析[J].天然气工业,26(10):30-32.
赵国柱,胡望水,杨申谷,等.2008.辽河油区外围龙湾筒凹陷碎屑岩储层特征研究[J].地质学报,8(1):24-29.
Sengor A M C,Natal’in B A,Burtman V S.1993.Evolution of the Altaid tectonic collage and Palaeozoic crustal growth in Eurasia[J].Nature,364:299-307.
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