西北地震学报2012，Vol.34Issue(2)：142-149,8.DOI:10.3969/j.issn.1000-0844.2012.02.0142
武都—康县断裂带活动性初步研究
Preliminary Study on Activity of the Wudu-Kangxian Fault Zone
摘要
Abstract
Wudu — Kangxian fault is one of the regional faults with left-lateral strike slip and thrusting active in southeastern part of Gansu province. Through satellite image interpretation and field investigation, the geometric segmentation and geomorphological and geological characteristics of the fault are studied. The result shows that the fault zone can be divided into the west(F1) and east(F2) segments, named Shangbanqiao—Changba fault and Shenjiayuan — Yaop-ing fault. Since the late Pleistocene, fault activity has formed rich dislocation landform phenomena, such as the left lateral of streams and ridges, terminal facet, fault cliff, saddle, waterfall and ground fissures. The new active of west segment (F1 ) was in Holocene, occurred from (1. 730 ± 0. 111) ka to (1. 670 ± 0. 141) ka ago. Its strong and obvious Holocene active characteristics are found in Ganquan town, mainly shows left-lateral strike slip accompanied by reverse component. The east segment)F2) may be a late Pleistocene active fault, mainly shows reverse component accompanied by the left-lateral strike slip.关键词
甘东南地区/武都—康县断裂/活动性/全新世断层Key words
The southeastern part of Gansu province/ Wudu — Kangxian fault/ Activity/ Holocene fault分类
天文与地球科学引用本文复制引用
贾伟,刘洪春,柳煜,袁道阳..武都—康县断裂带活动性初步研究[J].西北地震学报,2012,34(2):142-149,8.基金项目
陇南灾后重建项目和国家科技支撑计划项目"汶川地震断裂带科学钻探研究"共同资助 （）
中国地震局兰州地震研究所论著编号:LC2012016 （）
