徐家围子断陷深层挤压构造样式及成因分析
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摘要
以J D Lowell的构造样式分类方案为基础,对研究区三维地震资料进行了精细解释,指出该区主要发育5种挤压构造样式:断弯褶皱构造、断展褶皱构造、挤压背斜构造、断背斜构造、正反转构造。研究认为,沙河子组末期的西太平洋板块斜向俯冲导致郯庐断裂带大规模左旋走滑及营城组时期西太平洋正向俯冲与地幔上涌,是徐家围子断陷挤压构造样式形成的主要原因。同时,营城组沉积时期的火山活动,也是形成局部挤压的应力场的另一个重要原因。
Based on J D Lowell′s classification scheme about structure style,the precise interpretation of three-dimensional seismic data is conducted in this study area.Five kinds of compressional structures are developed in Xujiaweizi fault depression,including fault-bend fold,fault-propagation fold,compression anticline,faulted anticline and positive inversion structure.The study shows that the extensive sinistral strike-slip of Tanlu fault zone and the forward direction underthrust and mantle upwelling of western Pacific plate at Yingcheng Formation period,caused by the declinate underthrust of western Pacific plate at the last stage of Shahezi Formation,are main forming reasons of compressional structure style in Xujiaweizi fault depression.Meanwhile,the volcanic activity during the sedimentation of Yingcheng Formation is also an important reason of stress field formation of regional compressional structure in this area.
Based on J D Lowell′s classification scheme about structure style,the precise interpretation of three-dimensional seismic data is conducted in this study area.Five kinds of compressional structures are developed in Xujiaweizi fault depression,including fault-bend fold,fault-propagation fold,compression anticline,faulted anticline and positive inversion structure.The study shows that the extensive sinistral strike-slip of Tanlu fault zone and the forward direction underthrust and mantle upwelling of western Pacific plate at Yingcheng Formation period,caused by the declinate underthrust of western Pacific plate at the last stage of Shahezi Formation,are main forming reasons of compressional structure style in Xujiaweizi fault depression.Meanwhile,the volcanic activity during the sedimentation of Yingcheng Formation is also an important reason of stress field formation of regional compressional structure in this area.
引文
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[2]任延广,朱德丰,万传彪,等.松辽盆地徐家围子断陷天然气聚集规律与下步勘探方向[J].大庆石油地质与开发,2004,23(5):26-29.Ren Yanguang,Zhu Defeng,Wan Chuanbiao,et al.The gas accumulationand the direction of further exploration of Xujiaweizi in Songliao Basin[J].Petroleum Geology and Oilfield Development in Daqing,2004,23(5):26-29.
[3]郭占谦.松辽盆地的类型及形成与演化[J].地球科学,1998,23(增刊1):21-26.Guo Zhanqian.The types,the formation and evolution of the SongliaoBasin[J].Earth Science,1998,23(S1):21-26.
[4]刘学锋.徐家围子断陷深层构造演化与天然气聚集[J].江汉石油学院学报,2003,25(4):9-11.Liu Xuefeng.The tectonic evolution and gas accumulation in the deeplayersofXujiaweizi[J].Journal of Jianghan Petroleum Institute,2003,25(4):9-11.
[5]冯建辉,吕延仓,谭试典.中国石油构造样式[M].北京:石油工业出版社,2006.Feng Jianhui,Lv Yancang,Tan Shidian.China Petroleum and structuralstyle[M].Beijing:Petroleum Industry Press,2006.
[6]Lowell J D.Structural styles in petroleum exploration[M].Tulsa:Oil andGas Consuhants International Inc,1985.
[7]龚发雄,单业华,林舸,等.松辽盆地长垣中部断层走向及板块动力学意义[J].新疆石油地质,2006,27(6):688-690,695.Gong Faxiong,Shan Yehua,Lin Ge,et al.The fault trend and dynamicsignificance of plates in the middle of Changyuan in Songliao Basin[J].Xinjiang Petroleum Geology,2006,27(6):688-690,695.
[8]云金表,殷进垠,金之钧.松辽盆地深部地质特征及其盆地动力学演化[J].地震地质,2003,25(4):595-608.Yun Jinbiao,Yin Jinyin,Jin Zhijun.The geological features anddynamic evolution in the deep layers of Songliao Basin[J].Seismologyand Geology,2003,25(4):595-608.
[9]胡望水,吕炳全,张文军,等.松辽盆地构造演化及成盆动力学探讨[J].地质科学,2005,40(1):16-31.Hu Wangshui,Lv Bingquan,Zhang Wenjun,et al.The investigation oftectonic evolution and basin forming dynamics in Songliao Basin[J].Chinese Journal of Geology,2005,40(1):16-31.
[10]Hu Wangshui,Cai Chunfang,Wu Zhiyong,et al.Structural style and itsrelation to hydrocarbon exploration in the Songliao Basin,NortheastChina[J].Marine and Petroleum Geology,1998,15(1):41-42.
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