福山凹陷美台断层活动特征及其对沉积的控制

利用钻/测井、三维地震等资料，在地震资料解释成果的基础上，运用断层活动速率法分析了福山凹陷西部美台断层的活动演化特征。研究发现：美台断层在流沙港二期开始活动，在流沙港二期至一期，断层活动速率达到最高，此后活动性逐渐减小；在空间上，活动强度大的部位随着时间的发展而发生迁移；同一时期断层的不同部位活动强度也具有明显差异，总体表现为在美台断层中部断层活动性最强，而在断层两端活动性相对较弱。结合区域地层总沉降速率和沉积体系分析，初步探讨了断层对凹陷沉降与沉积体系的控制作用。

Activity Characteristics of Meitai Fault of Fushan Depression and its Controlling on Sedimentation

This paper analyzes the activity characteristics of Meitai fault in west of Fushan Depression with the reference ofdrill/logging and 3D seismic data，on the basis of interpreted seismic results，and by fault activity ratio analysis methods. Meitaifault started to develop in E2ls2. Its activity was stronger in E2ls2 and E2ls1，thereafter the activity gradually decreased. In space，the site with the greatest activity intensity migrated with the time passing by，while fault activity intensity differed significantlyin different parts of the study area. Generally speaking，the intensity of fault activity changed in a way of dying down from themiddle to the two flanks. We made a preliminary study on the fault controlling effect on basin settlement and sedimentary systemtypes with the combination of basin sedimentation rate and analysis of sedimentary system types and discussed the controllingeffect of fault activity on the deposition of sedimentation and sedimentary facies distribution.