摘要
通过对昆明盆地周边地区 9条主要活动断裂中的 7条 (F2 :白邑—横冲断裂 ;F3 :黑龙潭—官渡断裂 ;F4:普渡河—西山断裂 ;F5:罗茨—易门断裂 ;F6:大春河—一朵云断裂 ;F7:富民—呈贡断裂 ;F8:草铺—鸣矣河断裂 )在已有工作的基础上进行了补充考察及年代学样品的采集测试 ,对其断层活动时代进行了初步研究。结果显示F2 ,F3 ,F4,F5,F6,F7断裂晚更新世中晚期活动仍较明显 ;F8断裂主要活动时间为中更新世 ,晚更新世断裂活动较弱。
On the basis of existing works, the complementary survey and collection of chronology samples and measures are made for the 7 out of 9 major active faults (such as F 2 Baiyi thrust fault, F 3 Heilongtan-Guandu fault, F 4 Puduhe-Xishan fault, F 5 Luoci-Yimen fault, F 6 Dachunhe-Duoyun fault, F 7 Fumin-Chenggong fault, F 8 Caopu-Mingyihe fault) around Kunming basin areas. The active ages of the faults are primarily studied. The results show that the activities of the faults (F 2～F 7) were still obvious until the mid-later period of later-Pleistocene. The major active period of the F 8 fault was during the mid-Pleistocene and became weak during the later-Pleistocene.
出处
《地震研究》
CSCD
北大核心
2004年第4期357-362,共6页
Journal of Seismological Research
基金
云南省国际合作项目"中越红河断裂带地震活动性与地震构造特征"资助 (项目编号 :2 0 0 2GH10 ) .
关键词
昆明盆地
周边地区
活动断裂
活动时代
Kunming Basin, neighboring areas, active fault, active age
