临清拗陷东部断层发育及其对沉积的控制作用
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摘要
以地震剖面的详细分析解释为基础,利用断层活动速率参数定量分析了临清拗陷东部主要断层的活动性,结合中、新生代各主要构造层的横向展布特征探讨了断层的发育演化特征及断层发育对地层沉积的控制作用。结果表明,断层是临清拗陷东部中、新生代最重要的构造变动型式,依据不同地质时期断层的活动性,将断层发育演化过程划分为J3+K1、K2、E、N+Q四个主要的期次,不同期次断层发育演化特征存在着差异性,古近纪是研究区现今断层格局的主要发展及定型期;临清拗陷东部地区晚侏罗世—早白垩世整体为一NE向展布的大型断陷湖盆,现今残留地层展布特征体现了晚侏罗世—早白垩世张性断层对其沉积、晚白垩世区域性抬升和逆冲断层活动以及新生代张性断层对其剥蚀的叠加效应,古近纪断陷湖盆为NE和近EW向展布,地层厚度相对较薄,其展布特征体现了新生代张性断层对其沉积的控制作用。
Based on the detailed interpretation of the seismic profiles,the activities of the main faults in the east area of Linqing depression are analyzed by using the fault activity velocity,furthermore,the development characteristics of the faults are discussed.Based on the research above-mentioned,combined with the lateral distribution characteristics of the main structural layers of Mesozoic and Cenozoic,the fault controlling on the deposition of the strata is analyzed.The results show that the faults are the most important structure styles in Mesozoic and Cenozoic in the area of Linqing depression.According to the fault activities in each period,the development of the faults can be divided into four periods,late Jurassic to early Cretaceous,late Cretaceous,Paleogene and Neogene to Quarternary.The development characteristics of the faults are different in different periods,and the present pattern finalized in Paleogene.From late Jurassic to early Cretaceous,the east area of Linqing Sag was a large NE rift lacustrine basin The characteristic of the remnant strata is the superimposed outcome of the deposition controlled by the extension faults from late Jurassic to early Cretaceous,the denudation was controlled by the regional rise,the thrust faulting in late Cretaceous and the extension faults in Cenozoic.The NE and EW distribution and the thinner thickness of the Paleogene strata are the outcome of the deposition controlled by the extension faults in Cenozoic.
Based on the detailed interpretation of the seismic profiles,the activities of the main faults in the east area of Linqing depression are analyzed by using the fault activity velocity,furthermore,the development characteristics of the faults are discussed.Based on the research above-mentioned,combined with the lateral distribution characteristics of the main structural layers of Mesozoic and Cenozoic,the fault controlling on the deposition of the strata is analyzed.The results show that the faults are the most important structure styles in Mesozoic and Cenozoic in the area of Linqing depression.According to the fault activities in each period,the development of the faults can be divided into four periods,late Jurassic to early Cretaceous,late Cretaceous,Paleogene and Neogene to Quarternary.The development characteristics of the faults are different in different periods,and the present pattern finalized in Paleogene.From late Jurassic to early Cretaceous,the east area of Linqing Sag was a large NE rift lacustrine basin The characteristic of the remnant strata is the superimposed outcome of the deposition controlled by the extension faults from late Jurassic to early Cretaceous,the denudation was controlled by the regional rise,the thrust faulting in late Cretaceous and the extension faults in Cenozoic.The NE and EW distribution and the thinner thickness of the Paleogene strata are the outcome of the deposition controlled by the extension faults in Cenozoic.
引文
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[2]曹忠祥.临清坳陷东部地区第三系油气勘探问题讨论[J].油气地质与采收率,2003,10(3):17-19.
[3]姜平,王建华,翟卫红.临清坳陷德古2井油气成藏时期分析[J].西南石油学院学报,2006,28(1):23-25.
[4]李伟,吴智平,张明华,等.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[J].中国石油大学学报(自然科学版),2006,30(1):1-6.
[5]于平,杨冬,杨宝俊.华北地台聊城—兰考断裂地球物理场基本特征及其构造意义[J].吉林大学学报(地球科学版),2003,33(1):106-110.
[6]柳忠泉,邱连贵,周桂芹.临清坳陷东部构造变动特征及控制作用[J].石油实验地质,2004,26(1):31-34.
[7]夏斌,刘朝露,陈根文.渤海湾盆地中新生代构造演化与构造样式[J].天然气工业,2006,26(12):57-60.
[8]李伟.渤海湾盆地区中生代盆地演化与前第三系油气勘探[D].山东东营:中国石油大学(华东),2007.
[9]吴智平,侯旭波,李伟.华北东部地区中生代盆地格局及演化过程探讨[J].大地构造与成矿学,2007,31(4):385-399.
[10]李春山,许春华,黄永玲.临清坳陷(东部)石炭二叠系煤成气勘探远景[J].石油大学学报(自然科学版),1997,21(2):25-28.
[11]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.
[12]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.
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