伊通地堑西北缘走滑—冲断复合构造特征与油气勘探方向
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摘要
伊通地堑西北缘地表及地下地质条件极其复杂,地震勘探程度低,资料品质差,严重制约了对该地区构造特征的认识和油气勘探工作。本文运用构造解析方法,通过对最新的野外露头、钻井、地震等资料的综合研究,发现伊通地堑西北缘新近纪以来总体呈逆冲为主、右行走滑为辅的走滑—冲断复合构造特征,形成宽2～4km的断褶带,其演化受控于新近纪以来该地区断裂的反转构造活动。该断褶带具备良好油气成藏条件,可能是伊通地堑新的找油气领域,油气勘探应该以寻找走滑—冲断作用形成的雁列式背斜带、雁列断块和逆冲断层下盘为主。
The geological conditions of the surface and subsurface in North-West margin of Yitong Basin are very complicated, its low exploration degree and poor seismic data quality have a severe impacts on the recognition of the subsurface structure characteristics and oil&gas exploration activities in this region. By using new structure analysis method in this paper and based on integrated studies on new outcrops, drilling data, seismic data and other data, it is found that since Neogene the North-West margin of Yitong Basin has mainly shown strike-slip and thrust composite structure characteristics with thrust as main trend and dextral strike-slip as secondary trend, as a result a 2-4 Km wide fault-fold structural belt has been formed and its evolution has been controlled by reversion tectonic activity in the region. The belt has favorite conditions for hydrocarbon accumulation, it may be the new prospect area for oil exploration in this region, it is believed that the en-echelon anticline belt, the en-echelon fault blocks and the downwall of the thrust fault which were formed by strike-slip and thrust function should be the targets for the future exploration in Yitong Basin.
The geological conditions of the surface and subsurface in North-West margin of Yitong Basin are very complicated, its low exploration degree and poor seismic data quality have a severe impacts on the recognition of the subsurface structure characteristics and oil&gas exploration activities in this region. By using new structure analysis method in this paper and based on integrated studies on new outcrops, drilling data, seismic data and other data, it is found that since Neogene the North-West margin of Yitong Basin has mainly shown strike-slip and thrust composite structure characteristics with thrust as main trend and dextral strike-slip as secondary trend, as a result a 2-4 Km wide fault-fold structural belt has been formed and its evolution has been controlled by reversion tectonic activity in the region. The belt has favorite conditions for hydrocarbon accumulation, it may be the new prospect area for oil exploration in this region, it is believed that the en-echelon anticline belt, the en-echelon fault blocks and the downwall of the thrust fault which were formed by strike-slip and thrust function should be the targets for the future exploration in Yitong Basin.
引文
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[20]孙晓猛,龙胜祥,张梅生.佳木斯—伊通断裂带大型逆冲构造带的发现及形成时代.石油与天然气地质,2006,27(5):637~643
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[22]Yasuto Itoh,Hiroyuki Tsutsumi,Hirofumi Yamamoto et al.Active right-lateral strike-slip fault zone along the southern margin of the Japan Sea.Tectonophysics,2002,(351):301~314
[23]朱光,徐佑德,刘国生等.郯庐断裂带中—南段走滑构造特征与变形规律.地质科学,2006,41(2):226~241
[24]Xu J W.The Tangcheng-Lujiang Wrench Fault Sys-tem.John Wiley&Sons Ltd,UK,1993
[25]朱光,刘国生,牛漫兰等.郯庐断裂带晚第三纪以来的浅部挤压活动与深部过程.地震地质,2002,24(2):265~277
[26]漆家福,邓荣敬,周心怀等.渤海海域新生代盆地中的郯庐断裂带构造.中国科学(D辑),2006,38(增刊1):19~29
[27]陈义贤.辽河裂谷盆地断裂演化序次和油气藏形成模式.石油学报,1985,6(2):1~11
[28]Macgergor DS.Hydrocarbon habitat and classification of inverted rift basins.In:Buchanan J G&Buchanan P G(eds),Basin Inversion.Geological Society Special Pub-lication,1995,(88):83~93
[2]贾承造,何登发,雷振宇等.前陆冲断带油气勘探.北京:石油工业出版社,2000,18~56
[3]何登发,贾承造.冲断构造与油气聚集.石油勘探与开发,2005,32(2):55~62
[4]宋岩,方世虎,赵孟军等.前陆盆地冲断带构造分段特征及其对油气成藏的控制作用.地学前沿,2005,12(3):31~38
[5]孙自明,洪太元,张涛.新疆北部哈拉阿拉特山走滑—冲断复合构造特征与油气勘探方向.地质科学,2008,43(2):309~320
[6]贾承造,赵政璋,杜金虎等.中国石油重点勘探领域——地质认识、核心技术、勘探成效及勘探方向.石油勘探与开发,2008,35(4):385~396
[7]郑孟林,吴铁生,王桂梁等.辽河拗陷断层的选择性反转特征.石油地球物理勘探,2004,39(2):228~231
[8]侯贵廷,冯大晨,王文明等.松辽盆地的反转构造作用及其对油气成藏的影响.石油与天然气地质,2004,25(1):49~53
[9]胡望水,吕炳全,毛治国等.中国东部中新生代含油气盆地的反转构造.同济大学学报,2004,32(2):182~186
[10]孙增玖,崔全章,向晟.大民屯凹陷东部陡坡带构造演化特征.石油地球物理勘探,2008,43(3):355~359
[11]曹成润,董晓伟.东北北部中新生代盆地群构造与深部结构特征.煤田地质与勘探,2008,36(2):2~5
[12]郭孟习,孙炜,尹国义等.郯庐断裂系的北延及地质—地球物理特征.吉林地质,2000,19(3):35~44
[13]张庆龙,王良书,谢国爱等.郯庐断裂系北延及中生代构造体制转换问题的探讨.高校地质科学,2005,11(40):577~584
[14]朱光,王道轩,刘国生等.郯庐断裂带的伸展活动及其动力学背景.地质科学,2001,36(3):269~278
[15]刘国生,朱光,宋传中等.郯庐断裂带新近纪以来的挤压构造与合肥盆地的反转.安徽地质,2002,12(2):81~84
[16]朱光,王道轩,刘国生等.郯庐断裂带的演化及其对西太平洋板块运动的响应.地质科学,2004,39(1):36~49
[17]刘茂强,杨丙中,邓俊国等.伊通—舒兰地堑地质构造特征及其演化.北京:地质出版社,1993
[18]童亨茂.伊通地堑边界断裂的性质与演化.地质力学学报,2002,8(1):35~42
[19]刘万崧,周云轩,卢炎等.基于位场信息的伊舒地堑莫里青断陷西北缘断裂性质.吉林大学学报(地球科学版),2005,35:42~46
[20]孙晓猛,龙胜祥,张梅生.佳木斯—伊通断裂带大型逆冲构造带的发现及形成时代.石油与天然气地质,2006,27(5):637~643
[21]吴根耀,梁兴,陈焕疆.试论郯城—庐江断裂带的形成、演化及其性质.地质科学,2007,42(1):160~175
[22]Yasuto Itoh,Hiroyuki Tsutsumi,Hirofumi Yamamoto et al.Active right-lateral strike-slip fault zone along the southern margin of the Japan Sea.Tectonophysics,2002,(351):301~314
[23]朱光,徐佑德,刘国生等.郯庐断裂带中—南段走滑构造特征与变形规律.地质科学,2006,41(2):226~241
[24]Xu J W.The Tangcheng-Lujiang Wrench Fault Sys-tem.John Wiley&Sons Ltd,UK,1993
[25]朱光,刘国生,牛漫兰等.郯庐断裂带晚第三纪以来的浅部挤压活动与深部过程.地震地质,2002,24(2):265~277
[26]漆家福,邓荣敬,周心怀等.渤海海域新生代盆地中的郯庐断裂带构造.中国科学(D辑),2006,38(增刊1):19~29
[27]陈义贤.辽河裂谷盆地断裂演化序次和油气藏形成模式.石油学报,1985,6(2):1~11
[28]Macgergor DS.Hydrocarbon habitat and classification of inverted rift basins.In:Buchanan J G&Buchanan P G(eds),Basin Inversion.Geological Society Special Pub-lication,1995,(88):83~93
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