南秦岭安康月河拉分盆地的构造发育特征  

TECTONIC DEVELOPING CHARACTERISTICS OF YUEHE PULL-APART BASIN IN SOUTH QINLING AREA

作　　者：甘家思[1] 刘锁旺[1] 李愿军[2] 

机构地区：[1]中国地震局地震研究所,武汉430071 [2]武汉大学土木建筑工程学院,武汉430072

出　　处：《大地测量与地球动力学》2002年第4期101-105,共5页Journal of Geodesy and Geodynamics

基　　金：地震科学联合基金 (88015 )<南秦岭造山带走滑断裂;拉分盆地与地震活动研究>课题资助

摘　　要：南秦岭新生代安康月河盆地是北西向石泉—安康—竹山—房县左旋走滑断裂构造带西北端弯月状拉分盆地。论述了该盆地的边界断裂、盆地结构和三代盆地发育演化特征 ,估算了盆地最大扩张量 (1.4 5km)和主控边界断裂的走滑位错量 (2 .9km) ,分析了盆地主要储能结构与地震的关系。The Cenozoic Yuehe(in Ankang) basin in South Qinling area is a pull apart basin like crescent moon at the northwestern and section of NW Shiquan Ankang Zhushan Fangxian left leteral fault zone.The boundary faults,basin structure, as well as basin development evolution charactoristics of the basin in three eras are discussed,the maxium spreading value(1.45 km) and the strike slip dislocation value of principal boundary fault(2.9 km) are estimated and the relationship of main energy storing structure of this basin to earthquake is analyzed as well.

关 键 词：月河拉分盆地 构造形变 地震 储能结构 边界断裂 构造地貌 

分 类 号：P315.2[天文地球—地震学]