华北地区跨断层垂直形变分区特征及其对块体划分的意义  

REGIONAL CHARACTERS OF VERTICAL FAULT DEFORMATION IN NORTH CHINA AND ITS IMPLICATIONS FOR TECTONIC BLOCK DIVISION

作　　者：谢觉民[1] 杨国华[1] 郭良迁[1] 

机构地区：[1]中国地震局第一地形变监测中心,天津300180

出　　处：《地震地质》2000年第4期387-394,共8页Seismology and Geology

基　　金：<大陆强震机理与预测>项目课题!( 95130 30 6)资助

摘　　要：对 70年代以来的华北地区跨断层形变测量资料进行了分区研究。按构造单元将华北地区的跨断层测量台站或测点分为五组 :山西带、郯庐带、阴山 -燕山带西段、阴山 -燕山带东段和首都圈。对 80项实测资料的计算结果表明 ,华北地区断层垂直活动平均年速率为 0 335mm/a ,但各分区之间的断层活动速率值相差很大。山西断陷带的断层形变速率最高 ,是华北地区最重要的活动块体边界 ;其它构造带的断层形变速率都比较低。Since 1970s about 110 fixed or /and mobile stations of cross fault leveling have been laid out to measure vertical deformation in North China. Considering the tectonic unit division, these stations can be divided into five groups: Shanxi zone, Tanlu zone, western Yinshan-Yanshan zone, eastern Yinshan-Yanshan zone, and Capital circle area. From all the data 80 items of measurements are analyzed to calculate the deformation rates associated with faults. The results show that the average rate of vertical deformation across faults is 0 335mm/a in North China. There are, however, large differences of fault motion rates between tectonic zones. The Shanxi graben zone has the largest fault deformation rate showing it is the most important block boundary of North China. The fault deformation rates of other tectonic zones are relatively low.

关 键 词：断层垂直形变 块体边界 华北地区 断层形变测量 

分 类 号：P542.3[天文地球—构造地质学] P548.22[天文地球—地质学]