【摘要】 马东山断层自早白垩世形成以来经历了多期次构造运动的改造。对马东山断层的演化及发育特征进行分析,选取研究区内9条垂直于断层的地震剖面,综合运用活动速率、生长指数和古落差三种方法对断层的活动性进行分析,研究表明,马东山断层在K1l、K1n-E1和N-Q沉积时期的活动强度较大,而在K1m和E2s-E3q沉积时期的活动强度则相对较小;空间上,断层在形成演化过程中具有南强北弱的活动特征。更多还原

【Abstract】 Since early cretaceous epoch formed,Madongshan fault has experienced multi-period transformations of tectonic movement.Fault activity analysis is done on the basis of 9selected seismic sections perpendicular to the fault in the research district with the help of three methods including activity rate,growing index and ancient falling head.The result shows that Madongshan fault had a stronger activity at the deposition periods of K1 l,K1n-E1 and N-Q than at the deposition periods of K1 mand E2s-E3 q.as far as the space is concerned,the fault had a stronger activity in the south part than in the north part during its formation and evolution.更多还原