苏北盆地高邮凹陷边界断裂带构造特征及成因
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摘要
真武、吴堡断裂带是高邮凹陷的边界断裂带,具有复杂的结构和演化特征。通过三维地震资料解释以及断层平均活动速率的计算,分析了两断裂带在晚白垩世-新生代时期的几何学和运动学特征,将两断裂带作为一个整体,建立了凹陷边界主断裂发育的时空关系,对比探讨了两断裂带内各级断层的发育顺序和模式,并探讨了断层发育的成因。研究表明:一级断裂真①、吴①断层形成于泰州组沉积时期,阜四段沉积时期达到活动顶峰。二级断裂真②、吴②断层形成于阜四段沉积时期,戴南组沉积时期达到活动的顶峰。二级断裂主要形成于一级断裂沿走向的转折处,其延伸方向受控于区域早期NW-SE向伸展应力以及曲折边界条件;两断裂带内部断层发育模式有很大不同,认为其分别形成于伸展机制与斜滑机制下,与区域后期EW向挤压导致的郯庐断裂带右旋走滑作用有关。
As the boundary of the Gaoyou Sag, the Zhenwu and Wubao Fault Belts show complicated geometry and evolution history. Based on 3D seismic interpretation and calculation of mean fault active rate, we analyze the geometric and kinematic characteristics of the two fault belts during Late Cretaceous-Quaternary and establish the temporal-spatial relationship of development of the main faults as a whole. We also investigate the development patterns and the formation processes of the two fault belts respectively. Our results show that the main boundary faults of the Gaoyou Sag were formed during the deposition of the Funing and Dainan Formations and might have been related to the NW-trending subduction of the paleo-Pacific Plate, which caused the NW-SE trending regional extension in East China. In particular, the trends and the formation patterns of the Zhen②、Wu② and Ji3 Faults are related to the boundary conditions. We also infer that the Zhenwu and Wubao Fault Belts are formed through different mechanism. The Zhenwu Fault Belt was formed by stretching while the Wubao Fault Belt was formed via an oblique slip mechanism which maybe related to the dextral strike-slip of the Tanlu Fault. The dextral strike-slip of the Tanlu Fault maybe connected with the regional EW-trending compression induced by orthogonal subduction of the paleo-Pacific Plate.
As the boundary of the Gaoyou Sag, the Zhenwu and Wubao Fault Belts show complicated geometry and evolution history. Based on 3D seismic interpretation and calculation of mean fault active rate, we analyze the geometric and kinematic characteristics of the two fault belts during Late Cretaceous-Quaternary and establish the temporal-spatial relationship of development of the main faults as a whole. We also investigate the development patterns and the formation processes of the two fault belts respectively. Our results show that the main boundary faults of the Gaoyou Sag were formed during the deposition of the Funing and Dainan Formations and might have been related to the NW-trending subduction of the paleo-Pacific Plate, which caused the NW-SE trending regional extension in East China. In particular, the trends and the formation patterns of the Zhen②、Wu② and Ji3 Faults are related to the boundary conditions. We also infer that the Zhenwu and Wubao Fault Belts are formed through different mechanism. The Zhenwu Fault Belt was formed by stretching while the Wubao Fault Belt was formed via an oblique slip mechanism which maybe related to the dextral strike-slip of the Tanlu Fault. The dextral strike-slip of the Tanlu Fault maybe connected with the regional EW-trending compression induced by orthogonal subduction of the paleo-Pacific Plate.
引文
陈安定.2006.苏北南部、句容地区中、古生界构造特征.小型油气藏,11( 1) : 1-11.
陈安定.2010.苏北盆地构造特征及箕状断陷形成机理.石油与天然气地质,31( 2) : 140-150.
杜惠平,宋国良,谭胜章.2008.苏北盆地金湖凹陷内压扭性构造的地震反射.地球学报,29(5):571-576.
侯明金,朱光,Mercier Jacques,Vergély Pierre,王永敏.2007.郯庐断裂带(安徽段)及邻区的动力学分析与区域构造演化.地质科学,42(2):362-381.
胡望水,吕炳全,官大勇,张文军,冷军,毛治国,袁晓满.2003.郯庐断裂带及其周缘中新生代盆地发育特征.海洋地质与第四纪地质,23(4):51-58.
李亚辉.2006.苏北盆地高邮凹陷构造转换带控油机制研究.石油实验地质,28(2):109-112.
刘东鹰.2010.苏北-南黄海盆地的构造演化分析.石油天然气学报,32(6):27-31.
刘玉瑞,刘启东,杨小兰.2004.苏北盆地走滑断层特征与油气聚集关系.石油与天然气地质,25(3):279-283.
马立桥,陈汉林,董庸,夏九峰,孙凤霞,杨兰英.2007.苏北-南黄海南部叠合盆地构造演化与海相油气勘探潜力.石油与天然气地质,28(1):35-42.
牛漫兰,朱光,刘国生,宋传中,王道轩.2005.郯庐断裂带中-南段新生代火山活动与深部过程.地质科学,40(3):390-403.
邱海峻,许志琴,乔德武.2006.苏北盆地构造演化研究进展.地质通报,25(9-10):1117-1120.
邱旭明.2004.苏北盆地扭动构造油气藏.石油勘探与开发,31(3):26-29.
邱旭明.2005.苏北盆地真武吴堡断裂带的构造样式及圈闭类型.石油天然气学报(江汉石油学院学报),27(3):278-280.
舒良树,王博,王良书,何光玉.2005.苏北盆地晚白垩世-新近纪原型盆地分析.高校地质学报,11(4):534-543.
杨琦,谈彩萍,陈宏宇,李海华.2006.苏北盆地油气富集与分布的主控因素.江苏地质,30(4):241-248.
张鹏,李丽梅,张景发,姜文亮,陈丁,李金良,谭慧明.2011.郯庐断裂带江苏段第四纪活动特征及其动力学背景探讨.防震减灾工程学报,31(4):389-396.
张永鸿.1991.下扬子区构造演化中的黄桥转换事件与中、古生界油气勘探方向.石油与天然气地质,12(4):439-448.
周建勋.1999.基于平面砂箱实验对黄骅盆地新生代构造成因的新解释.大地构造与成矿学,23(3):281-287.
周建勋,漆家福.1999.伸展边界方向对伸展盆地正断层走向的影响———来自平面砂箱实验的启示.地质科学,34(4):491-497.
朱光,王道轩,刘国生,牛漫兰,宋传中.2004.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,39(1):36-49.
朱光,王道轩,刘国生,宋传中,徐嘉炜,牛漫兰.2001.郯庐断裂带的伸展活动及其动力学背景.地质科学,36(3):269-278.
朱平,毛凤鸣,李亚辉.2008.复杂断块油藏形成机理和成藏模式.北京:石油工业出版社.
He Z Y and Xu X S.2011.Petrogenesis of the Late Yanshanianmantle-derived intrusions in southeastern China:Response to the geodynamics of paleo-Pacific plate subduction.Chemical Geology,328:208-221.
Morley C K.1999.Patterns of displacement along large normalfaults:Implications for basin evolution and fault propaga-tion based on examples from East Africa.AAPG Bulletin,83:613-634.
Morley C K.2002.Evolution of large normal faults:Evidence fromseismic reflection data.AAPG Bulletin,86:961-978.
Sharp W D and Clague D A.2006.50-Ma Initiation of Hawai-ian-Emperor Bend records major change in Pacific platemotion.Science,313:1281-1284.
Su J B,Zhu W B,Wei J,Xu L M,Yang Y F,Wang Z Q andZhang Z Y.2011.Fault growth and linkage:Implicationsfor tectonosedimentary evolution in the Chezhen Basin of Bohai Bay,eastern China.AAPG Bulletin,95:1-26.
Zhu G,Jiang D Z,Zhang B L and Chen Y.2012.Destructionof the eastern North China Craton in a backarc setting:Evi-dence from crustal deformation kinematics.Gondwana Re-search,22:86-103.
陈安定.2010.苏北盆地构造特征及箕状断陷形成机理.石油与天然气地质,31( 2) : 140-150.
杜惠平,宋国良,谭胜章.2008.苏北盆地金湖凹陷内压扭性构造的地震反射.地球学报,29(5):571-576.
侯明金,朱光,Mercier Jacques,Vergély Pierre,王永敏.2007.郯庐断裂带(安徽段)及邻区的动力学分析与区域构造演化.地质科学,42(2):362-381.
胡望水,吕炳全,官大勇,张文军,冷军,毛治国,袁晓满.2003.郯庐断裂带及其周缘中新生代盆地发育特征.海洋地质与第四纪地质,23(4):51-58.
李亚辉.2006.苏北盆地高邮凹陷构造转换带控油机制研究.石油实验地质,28(2):109-112.
刘东鹰.2010.苏北-南黄海盆地的构造演化分析.石油天然气学报,32(6):27-31.
刘玉瑞,刘启东,杨小兰.2004.苏北盆地走滑断层特征与油气聚集关系.石油与天然气地质,25(3):279-283.
马立桥,陈汉林,董庸,夏九峰,孙凤霞,杨兰英.2007.苏北-南黄海南部叠合盆地构造演化与海相油气勘探潜力.石油与天然气地质,28(1):35-42.
牛漫兰,朱光,刘国生,宋传中,王道轩.2005.郯庐断裂带中-南段新生代火山活动与深部过程.地质科学,40(3):390-403.
邱海峻,许志琴,乔德武.2006.苏北盆地构造演化研究进展.地质通报,25(9-10):1117-1120.
邱旭明.2004.苏北盆地扭动构造油气藏.石油勘探与开发,31(3):26-29.
邱旭明.2005.苏北盆地真武吴堡断裂带的构造样式及圈闭类型.石油天然气学报(江汉石油学院学报),27(3):278-280.
舒良树,王博,王良书,何光玉.2005.苏北盆地晚白垩世-新近纪原型盆地分析.高校地质学报,11(4):534-543.
杨琦,谈彩萍,陈宏宇,李海华.2006.苏北盆地油气富集与分布的主控因素.江苏地质,30(4):241-248.
张鹏,李丽梅,张景发,姜文亮,陈丁,李金良,谭慧明.2011.郯庐断裂带江苏段第四纪活动特征及其动力学背景探讨.防震减灾工程学报,31(4):389-396.
张永鸿.1991.下扬子区构造演化中的黄桥转换事件与中、古生界油气勘探方向.石油与天然气地质,12(4):439-448.
周建勋.1999.基于平面砂箱实验对黄骅盆地新生代构造成因的新解释.大地构造与成矿学,23(3):281-287.
周建勋,漆家福.1999.伸展边界方向对伸展盆地正断层走向的影响———来自平面砂箱实验的启示.地质科学,34(4):491-497.
朱光,王道轩,刘国生,牛漫兰,宋传中.2004.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,39(1):36-49.
朱光,王道轩,刘国生,宋传中,徐嘉炜,牛漫兰.2001.郯庐断裂带的伸展活动及其动力学背景.地质科学,36(3):269-278.
朱平,毛凤鸣,李亚辉.2008.复杂断块油藏形成机理和成藏模式.北京:石油工业出版社.
He Z Y and Xu X S.2011.Petrogenesis of the Late Yanshanianmantle-derived intrusions in southeastern China:Response to the geodynamics of paleo-Pacific plate subduction.Chemical Geology,328:208-221.
Morley C K.1999.Patterns of displacement along large normalfaults:Implications for basin evolution and fault propaga-tion based on examples from East Africa.AAPG Bulletin,83:613-634.
Morley C K.2002.Evolution of large normal faults:Evidence fromseismic reflection data.AAPG Bulletin,86:961-978.
Sharp W D and Clague D A.2006.50-Ma Initiation of Hawai-ian-Emperor Bend records major change in Pacific platemotion.Science,313:1281-1284.
Su J B,Zhu W B,Wei J,Xu L M,Yang Y F,Wang Z Q andZhang Z Y.2011.Fault growth and linkage:Implicationsfor tectonosedimentary evolution in the Chezhen Basin of Bohai Bay,eastern China.AAPG Bulletin,95:1-26.
Zhu G,Jiang D Z,Zhang B L and Chen Y.2012.Destructionof the eastern North China Craton in a backarc setting:Evi-dence from crustal deformation kinematics.Gondwana Re-search,22:86-103.
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