福建厦门筼筜港北东向断裂带活动性研究

本文根据航卫片、第四纪地质、地貌、浅层地震、钻孔、年代学等资料,分析了厦门篑筜港北东向断裂带的第四纪晚期活动特征,并阐述了其构造组合特征。结果表明：①断裂带中的文灶-龙山-五通断裂和虎尾山-钟宅断裂为第四纪早期断裂,晚更新世以来不再活动;②篑筜港断裂为晚更新世早、中期活动断裂,晚更新世晚期（约3万年）以来不活动;③文灶-龙山-五通断裂和虎尾山．钟宅断裂将厦门岛切割为3个地块,分别形成了仙岳山地垒、篑筜港地堑和云项岩地垒的构造组合,晚更新世晚期以来地壳以整体性上升运动为总趋势。

Research on Quaternary Activities of Yundanggang Fault Zone in Xiamen, Fujian Province

The NE-striking Yundanggang fault zone, consisted of 3 normal faults, is distributed in Xiamen island, Fujian province, with a general strike of about 50° and dip to NW or SE with an angle of 50°-70°, controlling the boundary of Yundanggang Basin. Based on the previous work, through analysis in Quaternary geology, geomorphology, high-resolution seismic profiling, dating and drilling, the Quaternary active character of the NE-striking Yundanggang fault zone is discussed. The results are as follows： Wenzao-Longshan-Wutong fault segment and Huweishan-Zhongzai fault segment of this zone are active in early Quatemary, but inactive since late Pleistocene; Yundanggang fault, as an active fault, is active in early-middle Pleistocene. These above two faults divided Xiamen island into 3 blocks： Xianyueshan, Yundanggang and Yundingyan, with different movement.