潮水盆地构造特征
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摘要
为了研究潮水盆地中生代断层展布特征、断层之间的相互联系以及断裂系统是否控制沉积作用,借助地震剖面绘制出了盆地内多条地震地质剖面和不同时期所形成的断裂展布图。研究认为:盆地内主要经历了4期构造运动,构造特征复杂多样,其中早—中侏罗世主要形成一系列近东西走向的正断层,在一定程度上控制了沉积作用;晚侏罗世主要形成一系列近东西走向的逆断层,对沉积无影响;早白垩世仅在陈家新井凹陷形成一些小型正断层,其对沉积作用影响不大;新生代除了形成一系列东西走向的逆冲推覆断层外,部分早—中侏罗世形成的正断层反转。盆地的演化经历了早—中侏罗世的断陷成盆期、晚侏罗世的坳陷期、晚侏罗世末到白垩纪的隆升萎缩期和新生代喜山运动的改造消亡期4个阶段。盆地内生油层、储层和盖层发育良好,具有形成构造圈闭的条件,沿着断裂带寻找构造圈闭将是下一步的勘探方向。
Inorder to clarify the fault distribution characteristics,the connection between the faults,and that the deposition whether is controlled by the fault system, a number of geological sections and the fault distribution map formed in different geological periods were drawn up. The study result shows that the Chaoshui Basin experienced four times of tectonic movement, and formed complex structural features in deferent tectonic movement. In Early-Middle Jurassic, it formed a series of EW strike normal faults, which control deposition in some degree. In Late Jurassic, it formed a series of EW strike abnormal faults, which have no effect on deposition. In Early Cretaceous, there only formed some smallsize of normal faults in Chenjiaxinjing sag, which have little effect on deposition. In Cenozoic, there formed a series of thrust faults, and some normal faults formed in Early-Middle Jurassic were reversed. The evolution of the basin include the rift basin period of Early-Middle Jurassic, the depression period of the Late Jurassic, the uplifting and atrophy period from the end of the Late Jurassic to Cretaceous, and the transformation die period of the Himalayan tectonic movement in the Cenozoic. The source bed, reservoir and caprock in the basin developed well, so there are good conditions for forming structural traps in the Chaoshui Basin. It will be the next exploration work to looking for structural traps along the fault zone.
Inorder to clarify the fault distribution characteristics,the connection between the faults,and that the deposition whether is controlled by the fault system, a number of geological sections and the fault distribution map formed in different geological periods were drawn up. The study result shows that the Chaoshui Basin experienced four times of tectonic movement, and formed complex structural features in deferent tectonic movement. In Early-Middle Jurassic, it formed a series of EW strike normal faults, which control deposition in some degree. In Late Jurassic, it formed a series of EW strike abnormal faults, which have no effect on deposition. In Early Cretaceous, there only formed some smallsize of normal faults in Chenjiaxinjing sag, which have little effect on deposition. In Cenozoic, there formed a series of thrust faults, and some normal faults formed in Early-Middle Jurassic were reversed. The evolution of the basin include the rift basin period of Early-Middle Jurassic, the depression period of the Late Jurassic, the uplifting and atrophy period from the end of the Late Jurassic to Cretaceous, and the transformation die period of the Himalayan tectonic movement in the Cenozoic. The source bed, reservoir and caprock in the basin developed well, so there are good conditions for forming structural traps in the Chaoshui Basin. It will be the next exploration work to looking for structural traps along the fault zone.
引文
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[14]李翠,房玉涛,李道勇,等.潮水盆地阿右旗坳陷构造特征及其演化[J].山东国土资源,2011,27(11):14-16.
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[16]王燮培.石油勘探构造分析[M].北京:中国地质大学出版社,1989:1.
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[18]任森林,刘琳,徐雷.断层封闭性研究方法[J].岩性油气藏,2011,23(5):101-105.
[19]刘震,陈艳鹏,赵阳,等.陆相断陷盆地油气藏形成控制因素及分布规律概述[J].岩性油气藏,2007,19(2):121-128.
[20]王昌桂,马国福.潮水盆地侏罗系油气勘探前景[J].新疆石油地质,2008,29(4):466-469.
[2]王贞,邓亚婷,任玉梅,等.潮水盆地侏罗系沉积特征及找煤潜力[J].陕西地质,2007,25(1):28-37.
[3]卢进才,陈践发.古亚洲与特提斯交汇带盆地群油气资源潜力[J].西北地质,2006,39(3):41-42.
[4]李双泉.潮水盆地与酒西盆地中新生代构造对比[J].天然气地球科学,2005,16(4):464-468.
[5]吴少波,白玉宝,杨有运.潮水盆地长山剖面青土井组网状河沉积特征初探[J].西安石油学院学报,1997,12(4):8-11.
[6]张磊,钟建华,钟富平,等.潮水盆地侏罗系沉积体系及盆地演化[J].断块油气田,2009,16(1):12-15.
[7]门相勇,赵文智,王智诒.潮水盆地金昌坳陷油气成藏条件分析与含油气远景评价[J].石油勘探与开发,2001,28(1):23-26.
[8]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,2000:23-58.
[9]陈发景,汪新文.中国西北地区早—中侏罗世盆地原型分析[J].地学前缘2000,7(4):459-469.
[10]李雄.潮水盆地构造特征及其对油气成藏条件的控制[J].石油地质与工程,2010,24(2):17-20.
[11]郭庆银,陈祖伊,刘红旭,等.北山—走廊地区中—新生代构造演化及盆地产铀远景评价[J].铀矿地质,2006,22(6):321-327.
[12]李卫红.北山中新生代盆地群构造演化、新构造运动规律及其与砂岩铀矿成矿关系[J].西北铀矿地质,2002,28(2):4-8.
[13]李清河,张元生,涂毅敏,等.祁连山河西走廊地壳速度结构及速度与电性的联合解释[J].地球物理学报,1998,41(2):197-208.
[14]李翠,房玉涛,李道勇,等.潮水盆地阿右旗坳陷构造特征及其演化[J].山东国土资源,2011,27(11):14-16.
[15]陈发景.伸展断陷盆地分析[M].北京:地质出版社,2004:3-7.
[16]王燮培.石油勘探构造分析[M].北京:中国地质大学出版社,1989:1.
[17]张莹.伸展褶皱及其对油气聚集的控制作用——以海拉尔盆地贝中次凹为例[J].岩性油气藏,2012,24(2):16-20.
[18]任森林,刘琳,徐雷.断层封闭性研究方法[J].岩性油气藏,2011,23(5):101-105.
[19]刘震,陈艳鹏,赵阳,等.陆相断陷盆地油气藏形成控制因素及分布规律概述[J].岩性油气藏,2007,19(2):121-128.
[20]王昌桂,马国福.潮水盆地侏罗系油气勘探前景[J].新疆石油地质,2008,29(4):466-469.
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