【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。更多还原

【Abstract】 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.更多还原