济阳、临清坳陷及鲁西地区中新生代构造演化对比分析
摘要
通过对横跨济阳、临清坳陷及鲁西地区的6条地震平衡剖面或正演构造模型的分析表明:该区古近纪伸展速率大大快于中生代,尤其表现在古近纪早期(E1-2k+E2-3s4),济阳坳陷大于临清坳陷,鲁西地区最小。济阳坳陷的东营与惠民凹陷原型盆地的发育可大致分为5个阶段,中生代时期东部伸展量明显大于西部,东部在白垩纪末期有过强烈的剥蚀,推测这与中生代沿郯庐断裂裂谷较发育有关,东部裂陷剧烈,白垩纪末构造反转亦强烈。沙河街组四段—孔店组时期东营与惠民凹陷伸展量相近,属于走滑拉分的沉积盆地,沙河街组三段以后,东西部再次差异发展,西部伸展明显大于东部。整个中新生代垂向上表现为裂陷强,反转亦强;平面上表现为类似翘翘板运动。临清凹陷由于处在强裂陷的过度部位而使其变换构造发育,断陷湖盆不能持续稳定的发育,因此成烃条件较差。
Analyses of six balanced seismic sections or forward tectonic models across the Jiyang and Linqing depressions and Luxi area show that the extension rate in the region in the Paleocene, especially in the early Paleocene, was greatly higher than that in the Mesozoic, the extension rate for the Jiyang depression being higher than that for the Linqing depression and the extension rate for the Luxi area lowest. The development of the proto basin of the Dongying and Huimin subbasins in the Jiyang depression broadly went through five phases. In the Mesozoic the amount of extension in the east was markedly large than that in the west, and strong erosion occurred in the east during the Late Cretaceous. From the above, it is inferred that: this was related to the rifting along the Tanlu fault in the Mesozoic, and rifting was intense in the east and tectonic inversion was also strong at the end of the Cretaceous. The amounts of extension of the Dongying and Huimin subbasins were close during the deposition of the Four Member of the Shahejie Formation and Kongdian Formation. They belong to strike-slip pull-apart sedimentary subbasins. After the deposition of the Third Member of the Shahejie Formation, differential development again occurred in the east and west parts: the amount of extension in the east was noticeably larger than that in the west. The whole of Meso-Cenozoic witnessed strong vertical rifting and inversion, and in a plan view movement similar to a seesawing movement was manifest. Located in the transitional place of strong rifting, the Linqing subbasin had well-developed transitional structure and thus a downfaulted lake basin was unable to develop steadily; so the hydrocarbon-forming conditions were poor.
Analyses of six balanced seismic sections or forward tectonic models across the Jiyang and Linqing depressions and Luxi area show that the extension rate in the region in the Paleocene, especially in the early Paleocene, was greatly higher than that in the Mesozoic, the extension rate for the Jiyang depression being higher than that for the Linqing depression and the extension rate for the Luxi area lowest. The development of the proto basin of the Dongying and Huimin subbasins in the Jiyang depression broadly went through five phases. In the Mesozoic the amount of extension in the east was markedly large than that in the west, and strong erosion occurred in the east during the Late Cretaceous. From the above, it is inferred that: this was related to the rifting along the Tanlu fault in the Mesozoic, and rifting was intense in the east and tectonic inversion was also strong at the end of the Cretaceous. The amounts of extension of the Dongying and Huimin subbasins were close during the deposition of the Four Member of the Shahejie Formation and Kongdian Formation. They belong to strike-slip pull-apart sedimentary subbasins. After the deposition of the Third Member of the Shahejie Formation, differential development again occurred in the east and west parts: the amount of extension in the east was noticeably larger than that in the west. The whole of Meso-Cenozoic witnessed strong vertical rifting and inversion, and in a plan view movement similar to a seesawing movement was manifest. Located in the transitional place of strong rifting, the Linqing subbasin had well-developed transitional structure and thus a downfaulted lake basin was unable to develop steadily; so the hydrocarbon-forming conditions were poor.
引文
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[18]任凤楼,张岳桥,邱连贵,等.胶莱盆地白垩纪构造应力场与转换机制[J].大地构造与成矿学,2007,31(2):157-167.Ren Fenglou,Zhang Yueqiao,Qiu Liangui,et al.Strucutral stress field evolution of Jiaolai Basin in the Cretaceous[J].Geotectonica Et Metallogenia,2007,31(2):157-167(in Chinese with English abstract).
[19]Allen P A,Allen J R.Basin analysis principles.London:Blackwell Scientific Publications.1990:263-281.
[20]曹忠祥.营口-潍坊断裂带新生代走滑拉分-裂陷盆地伸展量、沉降量估算[J].地质科学.2008,43(1):65-81.Cao Zhongxiang.The extension and subside quantity calculation of pull-apart-rift basin along Yingkou-Weifang Fault Zone in Cenozoic[J].Chinese Journal of Geology,2008,43(1):65-81(in Chinese with English abstract).
[21]周章保,汪新文,陶国强.临清坳陷东部新生代盆地变换构造分析及与油气关系[J].海洋地质与第四纪地质,2002,22(4):91-98.Zhou Zhangbao,Wang Xinwen,Tao Guoqiang.The analysis of cenozoic transition structures and their elation with petroleum accumulation in the east of Linqing Depression[J].Marine Geology&Quaternary Geology,2002,22(4):91-98(in Chinese with English abstract).
[22]刘剑平,汪新伟,汪新文.临清坳陷变换构造研究[J].地质科技情报,2004,23(4):51-54.Liu Jianping,Wang Xinwei,Wang Xinwen.Transition structures in Linqing Depression[J].Geological Science and Technology Information,2004,23(4):51-54(in Chinese with English abstract).
[23]任凤楼,柳忠泉,邱连贵.2008.渤海湾盆地新生代各坳陷沉降的时空差异性[J].地质科学,2008,43(3):35-42.Ren Fenglou,Liu Zhongquan,Qiu Liangui.Space-times discrepancy of depressions of Bohai bay basin in Cenozoic[J].Chinese Journal of Geology,2008,43(3):35-42(in Chinese with English abstract).
[2]田在艺,韩屏.渤海断陷盆地拉张量分析与油气潜力[J].石油学报,1990,11(2):1-12.Tian Zaiyi,Han Ping.Extension Analysis on the Bohai Faulted Basin and It's Hydrocarbon potentiality[J].Acta Petrolei Sinica,1990,11(2):1-12(in Chinese with English abstract).
[3]刘绍文,王良书,刘波.拉张盆地伸展量的分形分析-以渤海盆地为例[J].地质论评,2001,47(3):229-233.Liu Shaowen,Wang Liangshu,Liu Bo.Fractal analysis of extensional quantity of the extensional basin—taking the Bohai Basin as an example[J].Geological Review,2001,47(3):229-233(in Chinese with English abstract).
[4]刘池洋.渤海湾盆地的裂陷伸展与断块翘倾.见:赵重远,刘池洋主编.华北克拉通沉积盆地形成与演化及其油气赋存[C]//.西安:西北大学出版社,1990.Liu Chiyang.Chasmic extension and fault block tilting in Bohai Bay basin[C]//Zhao Chongyuan,Liu Chiyang(eds.).Forming and Evolution of North China craton and Hydrocarbon Occrurrence in it.Xi′an:Northwest University Press,1990(in Chinese).
[5]Ian Davison.Listric normal fault profiles:calculation using bed-length balance and fault displacement[J].Journal of Structural Geology,1985,8(2):209-210.
[6]Gibbs A.D.Balanced cross-section construction from seismic sections in areas of extensional tectonics[J].Journal of Structural Geology,1983,5(2):153-160.
[7]Shaw J H,Stephen C.Hook,Edward P.Sitohang.Extentional fault-bend folding and synrift deposition:an example from the Central Sumatra Basin,Indonisia[J].AAPG Bulletin,1997,81(3):361-379.
[8]Suppe J.Geometry and Kinetics of fault-bend folding[J].American Journal of Science,1983,283:685-721.
[9]颜丹平,田崇鲁,孟令波,等.伸展构造盆地的平衡剖面及其构造意义-以松辽盆地南部为例[J].地球科学,2003,28(3):275-280.Yan Danping,Tian Chonglu,Meng Lingbo,et al.Balanced geological section for extensional tectonic basin and Its implication:An example from Southern Songliao Basin[J].Earth Science-Journal of China University of Geoscience,2003,28(3):275-280(in Chinese with English abstract).
[10]贾东,陈竹新,张惬,等.东营凹陷伸展断弯褶皱的构造几何学分析[J].大地构造与成矿学,2005,29(3):295-302.Jia Dong,Chen Zhuxin,Zhang Qie,et al.Structural geometric analysis on the extensional fault-bend fold in the Dongying depression[J].Geotectonica Et Metallogenia,2005,29(3):295-302(in Chinese with English abstract).
[11]刘池洋.拉伸构造区古地质构造恢复和平衡剖面建立-以渤海湾盆地为例[J].石油实验地质,1988,10(1):33-43.Liu Chiyang.The reproduction of paleo-structure and the establish of equilibrium for extension structure area——an example of Baohai gulf basin[J].Petroleum Geology&Expeximent,1988,10(1):33-43(in Chinese with English abstract).
[12]谢锐杰,漆家福,王永诗.渤海湾盆地东营凹陷北部地区新生代构造演化特征研究[J].石油实验地质,2004,26(5):427-431.Xie Ruijie,Qi Jiafu,Wang Yongshi.Charateristics of the Cenozoic structural evolution in the north of the dongying sag,the Bohaiwan Basin[J].Petroleum Geology&Expriment,2004,26(5):427-431(in Chinese with English abstract).
[13]陆克政,漆家福,等.渤海湾新生代含油气盆地构造模式[M].北京:地质出版社.1997.Lu Kezheng,Qi Jiafu,et al.Tectonic model of Cenozoic petroliferous basin Bohai Bay Province[M].Beijing:Gelogical Publishing House,1997(in Chinese with English abstract).
[14]肖焕钦,陈广军,李长宝.济阳坳陷盆地拉张量及其石油地质意义[J].石油实验地质,2002,24(1):13-18.Xiao Huanqin,Chen Guangjun,Li Changbao.Bsin Extensional amount of the Jiyang depression and its Petroleum geological signicance[J].Petroleum Geology&Expriment,2002,24(1):13-18(in Chinese with English abstract).
[15]吴根耀,马力,陈焕疆,等.苏皖地块构造演化、苏鲁造山带形成及其耦合的盆地发育[J].大地构造与成矿学,2003,27(4)337-353.Wu Genyao,Ma Li,Chen Huanjiang.Tectonic evolution of the Su-Wan Block,creation of the Su-Lu orogen and orogenesis coupled basin developing[J].Geotectonica Et Metallogenia,2003,27(4)337-353(in Chinese with English abstract).
[16]漆家福.渤海湾新生代盆地的两种构造系统及其成因解释[J].中国地质,2004,31(1):15-22.Qi Jiafu.Two tectonic systems in the Cenozoic Bohai Bay basin and their genetic interpretation[J].Geology in China,2004,31(1):15-22(in Chinese with English abstract).
[17]徐振中,陈世悦,王永诗.渤海湾地区中生代构造活动与沉积作用[J].中国地质,2006,33(1):201-211.Xu Zhenzhong,Chen Shiyue,Wang Yongshi.Mesozoic tectonic activities and sedimentation in the Bohai Gulf area[J].Geology in China,2006,33(1):201-211(in Chinese with English abstract).
[18]任凤楼,张岳桥,邱连贵,等.胶莱盆地白垩纪构造应力场与转换机制[J].大地构造与成矿学,2007,31(2):157-167.Ren Fenglou,Zhang Yueqiao,Qiu Liangui,et al.Strucutral stress field evolution of Jiaolai Basin in the Cretaceous[J].Geotectonica Et Metallogenia,2007,31(2):157-167(in Chinese with English abstract).
[19]Allen P A,Allen J R.Basin analysis principles.London:Blackwell Scientific Publications.1990:263-281.
[20]曹忠祥.营口-潍坊断裂带新生代走滑拉分-裂陷盆地伸展量、沉降量估算[J].地质科学.2008,43(1):65-81.Cao Zhongxiang.The extension and subside quantity calculation of pull-apart-rift basin along Yingkou-Weifang Fault Zone in Cenozoic[J].Chinese Journal of Geology,2008,43(1):65-81(in Chinese with English abstract).
[21]周章保,汪新文,陶国强.临清坳陷东部新生代盆地变换构造分析及与油气关系[J].海洋地质与第四纪地质,2002,22(4):91-98.Zhou Zhangbao,Wang Xinwen,Tao Guoqiang.The analysis of cenozoic transition structures and their elation with petroleum accumulation in the east of Linqing Depression[J].Marine Geology&Quaternary Geology,2002,22(4):91-98(in Chinese with English abstract).
[22]刘剑平,汪新伟,汪新文.临清坳陷变换构造研究[J].地质科技情报,2004,23(4):51-54.Liu Jianping,Wang Xinwei,Wang Xinwen.Transition structures in Linqing Depression[J].Geological Science and Technology Information,2004,23(4):51-54(in Chinese with English abstract).
[23]任凤楼,柳忠泉,邱连贵.2008.渤海湾盆地新生代各坳陷沉降的时空差异性[J].地质科学,2008,43(3):35-42.Ren Fenglou,Liu Zhongquan,Qiu Liangui.Space-times discrepancy of depressions of Bohai bay basin in Cenozoic[J].Chinese Journal of Geology,2008,43(3):35-42(in Chinese with English abstract).
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