福建东南沿海及邻区活动断裂的微地貌研究

本文对福建东南沿海及邻区活动断裂进行了微地貌学分析，研究了区内断裂构造第四纪以来的活动特征，并探讨了晚更新世以来的区域构造应力场.结果表明：北东向的长乐—诏安断裂带和与之具有成生联系的北西向断裂，第四纪以来具有垂直运动和水平运动的特征；主要有两个明显的活动期，即早、中更新世和晚更新世；晚更新世以来，北东向断裂具右旋水平滑动，北西向断裂具左旋水平滑动，显示出北西西—南东东向水平挤的区域构造应力场.

Micro|relief research on active fault in the coast of southeast Fujian and adjacent area

In the coast of southeast Fujian and adjacent area,well develop northeast- trending Changle-Zhao'an fault zone and several northwest-trending faults.On analysis of the micro-relief,this paper deals with the Quaternary activity of faults in the coast of southeast Fujian and adjacent area,and the tectonic stress field in this region since late Pleistocene.The results indicate that: The NE-trending Changle-Zhao'an fault zone is characterized by the micro-relief of vertical and horizontal movements since Quaternary time,and those NW-trending faults are obviously shown by similar micro-relief;These NE- & NW-trending faults in this region have undergone two tectonic stages in Quaternary time,i.e.early Quaternary and late Pleistocene;Since late Pleistocene,these NE-trending faults occur with right-lateral strike-slipping,and those NW-trending faults take place of left-lateral strike-slipping,showing the WNW-ESE-trending principal compressional stress of regional tectonic stress field.