宜昌附近第四纪断层研究的新进展  

SOME ADVANCES OF INVESTIGATING QUATERNARY FAULTS NEAR THE YICHMG CITY

作　　者：甘家思[1] 刘锁旺[1] 

机构地区：[1]国家地震局地震研究所

出　　处：《地壳形变与地震》1995年第4期64-69,共6页Crustal Deformation and Earthquake

摘　　要：通过野外地震地质调查，发现：（１）北东向新场—古老背断裂带的地表形迹和更新世多期活动的地层、构造岩证据；（２）近南北向虎牙第四纪断层及其粘滑快速断错的剩余形变特征；（３）北西向天阳坪断裂带南支早第四纪粘滑快速断错的剩余形变特征及其上覆晚更新世末期堆积（１４Ｃ１６４００±４３９年）未受断错所揭示的时间上限约束。From seismo-geological investigation in field by the authors, the following are found: (1) field trace of the Xinchang-Gulaobei fault zone in direction NE and evidences for Quaternary layers structure rocks relating to the faulting severval times in Pleistocene epoch,(2) remanent deformation feature of fast stick-slip dislocation for the Huya Quaternary fault in direction,(3) remanent deformation feature of fast stick slip dislocation for the south branch of Tianyangping fault zone and no-dislocated top sediment (14C 16 400±439 years)of Late Pleistocene epoch on the fault showing the last time constraint to the fault activity.

关 键 词：断层活动 第四纪 宜昌地区 

分 类 号：P542.3[天文地球—构造地质学]