埕岛地区中生代和新生代断层发育特征及其对沉积的控制作用
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摘要
对穿过埕岛地区中生代和新生代主要断层的地震测线进行了详细的解释和分析,以了解该地区断层的发育演化特征及其对沉积的控制作用。结果表明,埕岛地区中生代以埕北断层、埕北20断层、埕北30北断层及其派生断层活动为主,主断层的发育演化普遍经历了由逆到正的构造负反转过程;新生代主断层中埕北20断层停止活动,其余两条断层均继承性活动,并开始发育以走滑性质为主的埕北30南断层以及其他次级北东向正断层。断层活动是埕岛地区中、新生代地层沉积的主要控制因素。埕岛地区中、新生代断层发育演化特征与济阳坳陷其他构造单元相似,但其平面组合特征具有一定的差异性,这与距离郯庐断裂带较近,受到更强烈的走滑作用有关。
In order to investigate the development characteristic of Mesozoic and Cenozoic faults and its control over the deposition in Chengdao area,several seismic sections in this area were analyzed in detail.In Mesozoic,the activity of Chengbei fault,Chengbei 20 fault,Chengbei 30 north fault and their sub-faults developed in Chengdao area take the dominant position,and the main faults generally experience a negative reversion process.In Cenozoic,Chengbei 20 fault stops activity,Chengbei fault and Chengbei 30 north fault keep on developing,and Chengbei 30 south strike-slip fault and some new NE-trending faults start to develop.The deposition of the Mesozoic and Cenozoic strata in this area is mainly controlled by the development of the main faults.The development characteristics of the Mesozoic and Cenozoic faults in Chengdao area are similar to the other structural units of Jiyang depression.However,the planar combined characteristic of the faults in Chengdao area is different,which results from the closer distance to Tan-lu fault belt and stronger strike-slip effect.
In order to investigate the development characteristic of Mesozoic and Cenozoic faults and its control over the deposition in Chengdao area,several seismic sections in this area were analyzed in detail.In Mesozoic,the activity of Chengbei fault,Chengbei 20 fault,Chengbei 30 north fault and their sub-faults developed in Chengdao area take the dominant position,and the main faults generally experience a negative reversion process.In Cenozoic,Chengbei 20 fault stops activity,Chengbei fault and Chengbei 30 north fault keep on developing,and Chengbei 30 south strike-slip fault and some new NE-trending faults start to develop.The deposition of the Mesozoic and Cenozoic strata in this area is mainly controlled by the development of the main faults.The development characteristics of the Mesozoic and Cenozoic faults in Chengdao area are similar to the other structural units of Jiyang depression.However,the planar combined characteristic of the faults in Chengdao area is different,which results from the closer distance to Tan-lu fault belt and stronger strike-slip effect.
引文
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[2]李洪革,杜旭东,陆克政,等.渤海湾地区中西部中生代构造特征及演化[J].石油大学学报:自然科学版,1999,23(3):1-5.LI Hong-ge,DU Xu-dong,LU Ke-zheng,et al.Evolu-tion and structural characteristics of the Mesozoic era inthe central-west part of Bohai Bay area[J].Journal of theUniversity of Petroleum,China(Edition of Natural Sci-ence),1999,23(3):1-5.
[3]郑德顺,吴智平,李凌,等.惠民凹陷中生代和新生代断层发育特征及其对沉积的控制作用[J].石油大学学报:自然科学版,2004,28(5):6-12.ZHENG De-shun,WU Zhi-ping,LI Ling,et al.Devel-opment characteristic of faults in Mesozoic and Cenozoicof Huimin sag and its control to sediment[J].Journal ofthe University of Petroleum,China(Edition of NaturalScience),2004,28(5):6-12.
[4]李伟,吴智平,周瑶琪.济阳坳陷中生代地层剥蚀厚度、原始厚度恢复及原型盆地研究[J].地质论评,2005,51(5):507-515.LI Wei,WU Zhi-ping,ZHOU Yao-qi.Reconstructionof the thickness of the Mesozoic strata and Mesozoic pro-to-type basin in the Jiyang area[J].Geological Review,2005,51(5):507-515.
[5]徐嘉炜,马国锋.郯庐断裂带研究的十年回顾[J].地质论评,1992,38(4):316-324.XU Jia-wei,MA Guo-feng.Review of ten years(1981-1999)of research on the Tancheng-Lujiang fault zone[J].Geological Review,1992,38(4):316-324.
[6]徐嘉炜,朱光.中国东部郯庐断裂带构造模式讨论[J].华北地质矿产杂志,1995,10(2):121-134.XU Jia-wei,ZHU Guang.Discussion on tectonic modelsfor the Tan-lu fault zone,eastern China[J].Jour Geol&Min Res North China,1995,10(2):121-134.
[7]李鹏举,卢华复,施央申.渤海湾盆地东濮凹陷的形成及断裂构造研究[J].南京大学学报:自然科学版,1995,31(1):128-139.LI Peng-ju,LU Hua-fu,SHI Yang-shen.Study on theformation and fault structures of the Dongpu depression ofBohai gulf,eastern China[J].Journal of Nanjing Univer-sity(Natural Science Edition),1995,31(1):128-139.
[8]许浚远,张凌云.欧亚板块东缘新生代盆地成因:右行剪切拉分作用[J].石油与天然气地质,1999,20(3):187-191.XU Jun-yuan,ZHANG Ling-yun.Genesis of Cenozoicbasins in the eastern margin Eurasia plate:dextral pullingapart[J].Oil&Gas Geology,1999,20(3):187-191.
[9]何海清,汪兆云,韩品龙.华北地区构造演化对渤海湾油气形成和分布的控制[J].地质学报,1998,72(4):313-322.HE Hai-qing,WANG Zhao-yun,HAN Pin-long.Tec-tonic control on the formation and distribution of oil-gaspools in the Bohai Bay basin of North China[J].ActaGeologica Sinca,1998,72(4):313-322.
[10]任建业,李思田.西太平洋边缘海盆地的扩张过程和动力学背景[J].地学前缘,2000,7(3):203-213.REN Jian-ye,LI Si-tian.Spreading and dynamic set-ting of marginal basins of the western Pacific[J].EarthScience Frontiers,2000,7(3):203-213.
[11]戴俊生.埕岛油田古生界构造特征及演化[J].中国海上油气(地质),2000,14(3):174-177.DAI Jun-sheng.Paleozoic structures and their evolutionin Chengdao Oilfield[J].China Offshore Oil and Gas(Geology),2000,14(3):174-177.
[12]许坤,潘耀丽,彭峰.辽河盆地下第三系层序地层分析[J].地层学杂志,1997,21(4):267-274.XU Kun,PAN Yao-li,PENG Feng.An analysis of thelower Paleocene sequence in Liaohe basin,Liaoning[J].Journal of Stratigraphy,1997,21(4):267-274.
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