渤海湾盆地义和庄凸起义东地区构造特征及形成与演化
|
摘要
利用高精度三维地震数据结合钻井资料,分析了义东地区构造特征,恢复了构造演化过程,剖析了义东断槽的形成机理。研究表明,NW和NE向断层将义东地区切割成"两山一槽二台阶"的构造格局,义东断槽夹持于NW向义古56断层与义古991断层之间。SN剖面上,断槽内古生界残留厚度较为稳定,中生界由北向南减薄,而古近纪孔店组则由东向西减薄;EW剖面上,义古991断层前缘形成多条叠瓦状逆断层,后缘伴生一系列阶梯状正断层,表现为"前压后张",具有重力滑动构造的特征。平衡剖面分析表明,义东地区经历了稳定、挤压、反转、裂陷及拗陷等5个演化阶段。裂陷阶段,义古56、义古991、义东等断层将义东断槽基底切割成孤立的块体,并在断块掀斜作用下,发生由东向西的重力滑动,义东断槽形成并定型。因此,义东断槽的形成受控于重力滑动,其中喜马拉雅早期的裂陷运动是重力滑动的基础,宽缓的义古991断层断面是重力滑动的必要条件,义东断层下盘抬升造成的地层掀斜是重力滑动构造的触发机制。
Multi-stage tectonic movements increase the complexity of structural geometry within a fault trough,therefore,it is critical to understand the deformation mechanism of fault trough.We show here that the interpretation of the Eastern Yihezhuang Uplift(Jiyang Depression,East China)helped to understand the deformation mechanism of the Yidong fault trough. We investigated the structural characteristics and evolution of the Yidong region using high-resolution 3 Dseismic and drilling data.The results suggested that the NW-and NE-striking faults cut through the region to form a"two hill-one trough-two step"structural pattern,with the NW-striking Yidong fault trough sandwiched between the Yigu 991 fault and the Yigu 56 fault.In the section perpendicular to the fault trough,the residual thickness of the Paleozoic sediments in the fault trough remains constant,while the Mesozoic is thinning from north to south,and so is the Kongdian Formation from east to west.In the section parallel to the fault trough,multiple imbricated reverse faults formed on the front of the Yigu 991 fault with series of associated SNtrending stepwise normal faults forming at the back margin.This"compress at the front and pull at the back"deformation is the characteristics of gravity sliding tectonics.The analysis of balanced cross sections showed that the region has experienced five stages of evolution.In the rifting stage,the Yigu 991,Yigu 56 and Yidong faults dissected the basement rock into an isolated block,allowing the stratum to glide westward under the action of the tilted block to form the Yidong fault trough.Thus,we propose that the gravity sliding determined the formation of the Yidong fault trough,by which,the rifting at the early Himalayan laid a foundation for the gravity sliding,the wide and gentle Yigu 991 fault plane provided essential condition,and formation tilting derived from the uplift of footwall of the Yidong fault triggered the gravity sliding.
Multi-stage tectonic movements increase the complexity of structural geometry within a fault trough,therefore,it is critical to understand the deformation mechanism of fault trough.We show here that the interpretation of the Eastern Yihezhuang Uplift(Jiyang Depression,East China)helped to understand the deformation mechanism of the Yidong fault trough. We investigated the structural characteristics and evolution of the Yidong region using high-resolution 3 Dseismic and drilling data.The results suggested that the NW-and NE-striking faults cut through the region to form a"two hill-one trough-two step"structural pattern,with the NW-striking Yidong fault trough sandwiched between the Yigu 991 fault and the Yigu 56 fault.In the section perpendicular to the fault trough,the residual thickness of the Paleozoic sediments in the fault trough remains constant,while the Mesozoic is thinning from north to south,and so is the Kongdian Formation from east to west.In the section parallel to the fault trough,multiple imbricated reverse faults formed on the front of the Yigu 991 fault with series of associated SNtrending stepwise normal faults forming at the back margin.This"compress at the front and pull at the back"deformation is the characteristics of gravity sliding tectonics.The analysis of balanced cross sections showed that the region has experienced five stages of evolution.In the rifting stage,the Yigu 991,Yigu 56 and Yidong faults dissected the basement rock into an isolated block,allowing the stratum to glide westward under the action of the tilted block to form the Yidong fault trough.Thus,we propose that the gravity sliding determined the formation of the Yidong fault trough,by which,the rifting at the early Himalayan laid a foundation for the gravity sliding,the wide and gentle Yigu 991 fault plane provided essential condition,and formation tilting derived from the uplift of footwall of the Yidong fault triggered the gravity sliding.
引文
[1]RAMBERG H.Gravity,deformation and Earth's crust[M]∥Theory,experiments and geological applications.London,New York:Academic Press,1981:436.
[2]马杏垣,索书田,游振东,等.嵩山构造变形-重力构造、构造解析[M].北京:地质出版社,1981.
[3]WEBB B C,COOPER A H.Slump folds and gravity slide structures in a Lower Palaeozoic marginal basin sequence(the Skiddaw Group),NW England[J].Journal of Structural Geology,1988,10:463-472.
[4]索书田.重力滑动构造[J].地球科学:中国地质大学学报,1983,3:11-22.
[5]HENZA A A,WITHJACK M O,SCHLISCHE R W.Normal-fault development during two phases of non-coaxial extension:an experimental study[J].Journal of Structural Geology,2010,32(11):1656-1667.
[6]李万程.重力滑动构造的成因类型[J].煤田地质与勘探,1995,23(1):19-24.
[7]孙锦屏,李万程.一个重力滑动构造的范例:介绍河南芦店滑动构造[J].中国煤炭地质,2009,21(4):9-15.
[8]杨克绳,袁秉衡.反转构造与重力滑动构造及油气[J].石油勘探与开发,1993,20(1):1-9.
[9]NORTHRUP C J,ROYDEN L H,BURCHFIEL B C.Motion of the Pacific plate relative to Eurasia and its potential relation to Cenozoic extrusion along the eastern margin of Eurasia[J].Geology,1995,23(8):719-722.
[10]徐嘉炜,朱光,吕培基,等.郯庐断裂带平移年代学研究的进展[J].安徽地质,1995,5(1):1-12.
[11]赵乐强,张金亮,宋国奇,等.义和庄凸起东区前第三系顶部风化壳结构发育模式及对油气运聚的影响[J].沉积学报,2008,26(3):435-444.
[12]张家震,王永诗,王学军.渤海湾盆地义和庄凸起北坡成藏特征与油藏分布规律[J].石油实验地质,2003,25(4):362-365.
[13]谭绍泉.义和庄凸起东部新近系油藏油气成藏期次[J].油气地质与采收率,2010,17(2):42-44.
[14]任建业,于建国,张俊霞.济阳坳陷深层构造及其对中新生代盆地发育的控制作用[J].地学前缘,2009,16(4):117-137.
[15]郑德顺,吴智平,李伟,等.济阳坳陷中、新生代盆地转型期断裂特征及其对盆地的控制作用[J].地质学报,2005,79(3):386-393.
[16]GUO L,JIA C,KONHAUSER K O.Depositional system and hydrocarbon accumulation in Gubei slope zone,Zhanhua Depression,Bohai Bay Basin,eastern China[J].Energy Exploration&Exploitation,2016,34(6):810-827.
[17]方旭庆,蒋有录,罗霞,等.济阳坳陷断裂演化与油气富集规律[J].中国石油大学学报(自然科学版),2013,37(2):21-35.
[18]杨超,陈清华,吕洪波,等.济阳坳陷晚古生代-中生代构造演化特点[J].石油学报,2008,29(6):859-864.
[19]李勇,钟建华,温志峰,等.印支运动对济阳坳陷构造形态形成演化的影响[J].地质论评,2006,52(3):321-330.
[20]吴智平,李伟,任拥军,等.济阳坳陷中生代盆地演化及其与新生代盆地叠合关系探讨[J].地质学报,2003,77(2):280-286.
[21]漆家福,于福生,陆克政,等.渤海湾地区的中生代盆地构造概论[J].地学前缘,2003,10(增刊):199-206.
[22]MARUYAMA S,ISOZAKI Y,KIMURA,et al.Paleogeographic maps of the Japanese islands:plate tectonic synthesis from 750Ma to the present[J].The Island Arc,1997,8(6):121-142.
[23]王世虎,夏斌,陈根文,等.济阳坳陷构造特征及形成机制讨论[J].大地构造与成矿学,2004,28(4):428-433.
[24]宗国洪,肖焕钦,李常宝,等.济阳坳陷构造演化及其大地构造意义[J].高校地质学报,1999,5(3):275-282.
[25]REYER E.On the causes of the deformation of the Earth's crust[J].Scientific American,1892(Suppl):13876-13875.
[26]SERANNE M,ANKA Z.South Atlantic continental margins of Africa:a comparison of the tectonic vs.climate interplay on the evolution of equatorial West Africa and SWAfrica margins[J].Journal of African Earth Sciences,2005,43(1/2/3):283-300.
[27]马杏垣,索书田.论滑覆及岩石圈内多层次滑脱构造[J].地质学报,1984(3):205-213.
[28]王化清.固安凹陷的重力滑动构造[J].石油地球物理勘探,1990,25(1):109-117.
[29]李理,钟大赉,杨长春,等.渤海湾盆地济阳坳陷滑脱构造研究[J].地球物理学报,2008,51(2):521-530.
[30]陈洁,董冬,邱明文.济阳坳陷内的负反转构造及其石油地质意义[J].石油实验地质,1999,21(3):201-206.
[31]胡望水,李涛,于水,等.西非被动大陆边缘重力滑脱构造发育演化及成因机制[J].大地构造与成矿学,2012,36(2):186-196.
[32]MELLO U T,PRATSON L F.Regional slope stability and slope-failure mechanics from the two-dimensional state of stress in an infinite slope[J].Marine Geology,1999,154(1/2/3/4):339-356.
[2]马杏垣,索书田,游振东,等.嵩山构造变形-重力构造、构造解析[M].北京:地质出版社,1981.
[3]WEBB B C,COOPER A H.Slump folds and gravity slide structures in a Lower Palaeozoic marginal basin sequence(the Skiddaw Group),NW England[J].Journal of Structural Geology,1988,10:463-472.
[4]索书田.重力滑动构造[J].地球科学:中国地质大学学报,1983,3:11-22.
[5]HENZA A A,WITHJACK M O,SCHLISCHE R W.Normal-fault development during two phases of non-coaxial extension:an experimental study[J].Journal of Structural Geology,2010,32(11):1656-1667.
[6]李万程.重力滑动构造的成因类型[J].煤田地质与勘探,1995,23(1):19-24.
[7]孙锦屏,李万程.一个重力滑动构造的范例:介绍河南芦店滑动构造[J].中国煤炭地质,2009,21(4):9-15.
[8]杨克绳,袁秉衡.反转构造与重力滑动构造及油气[J].石油勘探与开发,1993,20(1):1-9.
[9]NORTHRUP C J,ROYDEN L H,BURCHFIEL B C.Motion of the Pacific plate relative to Eurasia and its potential relation to Cenozoic extrusion along the eastern margin of Eurasia[J].Geology,1995,23(8):719-722.
[10]徐嘉炜,朱光,吕培基,等.郯庐断裂带平移年代学研究的进展[J].安徽地质,1995,5(1):1-12.
[11]赵乐强,张金亮,宋国奇,等.义和庄凸起东区前第三系顶部风化壳结构发育模式及对油气运聚的影响[J].沉积学报,2008,26(3):435-444.
[12]张家震,王永诗,王学军.渤海湾盆地义和庄凸起北坡成藏特征与油藏分布规律[J].石油实验地质,2003,25(4):362-365.
[13]谭绍泉.义和庄凸起东部新近系油藏油气成藏期次[J].油气地质与采收率,2010,17(2):42-44.
[14]任建业,于建国,张俊霞.济阳坳陷深层构造及其对中新生代盆地发育的控制作用[J].地学前缘,2009,16(4):117-137.
[15]郑德顺,吴智平,李伟,等.济阳坳陷中、新生代盆地转型期断裂特征及其对盆地的控制作用[J].地质学报,2005,79(3):386-393.
[16]GUO L,JIA C,KONHAUSER K O.Depositional system and hydrocarbon accumulation in Gubei slope zone,Zhanhua Depression,Bohai Bay Basin,eastern China[J].Energy Exploration&Exploitation,2016,34(6):810-827.
[17]方旭庆,蒋有录,罗霞,等.济阳坳陷断裂演化与油气富集规律[J].中国石油大学学报(自然科学版),2013,37(2):21-35.
[18]杨超,陈清华,吕洪波,等.济阳坳陷晚古生代-中生代构造演化特点[J].石油学报,2008,29(6):859-864.
[19]李勇,钟建华,温志峰,等.印支运动对济阳坳陷构造形态形成演化的影响[J].地质论评,2006,52(3):321-330.
[20]吴智平,李伟,任拥军,等.济阳坳陷中生代盆地演化及其与新生代盆地叠合关系探讨[J].地质学报,2003,77(2):280-286.
[21]漆家福,于福生,陆克政,等.渤海湾地区的中生代盆地构造概论[J].地学前缘,2003,10(增刊):199-206.
[22]MARUYAMA S,ISOZAKI Y,KIMURA,et al.Paleogeographic maps of the Japanese islands:plate tectonic synthesis from 750Ma to the present[J].The Island Arc,1997,8(6):121-142.
[23]王世虎,夏斌,陈根文,等.济阳坳陷构造特征及形成机制讨论[J].大地构造与成矿学,2004,28(4):428-433.
[24]宗国洪,肖焕钦,李常宝,等.济阳坳陷构造演化及其大地构造意义[J].高校地质学报,1999,5(3):275-282.
[25]REYER E.On the causes of the deformation of the Earth's crust[J].Scientific American,1892(Suppl):13876-13875.
[26]SERANNE M,ANKA Z.South Atlantic continental margins of Africa:a comparison of the tectonic vs.climate interplay on the evolution of equatorial West Africa and SWAfrica margins[J].Journal of African Earth Sciences,2005,43(1/2/3):283-300.
[27]马杏垣,索书田.论滑覆及岩石圈内多层次滑脱构造[J].地质学报,1984(3):205-213.
[28]王化清.固安凹陷的重力滑动构造[J].石油地球物理勘探,1990,25(1):109-117.
[29]李理,钟大赉,杨长春,等.渤海湾盆地济阳坳陷滑脱构造研究[J].地球物理学报,2008,51(2):521-530.
[30]陈洁,董冬,邱明文.济阳坳陷内的负反转构造及其石油地质意义[J].石油实验地质,1999,21(3):201-206.
[31]胡望水,李涛,于水,等.西非被动大陆边缘重力滑脱构造发育演化及成因机制[J].大地构造与成矿学,2012,36(2):186-196.
[32]MELLO U T,PRATSON L F.Regional slope stability and slope-failure mechanics from the two-dimensional state of stress in an infinite slope[J].Marine Geology,1999,154(1/2/3/4):339-356.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |