福建永安-晋江断裂带东南段探槽剖面研究
South China Journal of Seismology(2010)
Abstract
分析断裂的地表出露特征,对北西向永安-晋江断裂带东南段的隐伏断裂,进行探槽开挖和地层年代学测试。通过对官前主干断裂进行探槽开挖,揭露出北西向官前主干断裂没有向上错断上覆第四系,探槽揭示的最老第四系年龄为距今45.69±3.88 Ka,表明了官前主干断裂在更新世晚期以来已不再活动,为永安-晋江断裂带东南段的断裂活动性研究奠定了可靠基础。
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Key words
Fault activity,Trench,Yongan-Jinjiang
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