doi:10.3969/j.issn.1007-1903.2023.02.015Vol.18No.02June,2023第18卷第2期2023年6月http://csdz.cbpt.cnki.net/沧口断裂断层泥石英颗粒微形貌特征及其年代学意义冷传旭1,2,李学专1,2,3,邵铖1,2,3,孙玺1,2(1.青岛市勘察测绘研究院,山东青岛266032;2.青岛岩土工程技术研究中心,山东青岛266032;3.青岛海泊尔建设工程检测有限公司,山东青岛266032)摘要:利用扫描电镜对胶州湾东岸段沧口断裂断层泥中的石英颗粒进行微形貌特征观察与统计。结果表明:胶州湾东岸段沧口断裂最新活动时代为中更新世至晚更新世,未见全新世以来的活动迹象;该段沧口断裂自上新世以来至晚更新世有3期活动,分别为第一期上新世,第二期早更新世,第三期中更新世至晚更新世。总体来说,自上新世至晚更新世,沧口断裂活动性呈明显减弱的趋势。断层泥石英微形貌所反映的沧口断裂最新活动时代与前人测年结果基本一致,所反映的沧口断裂自上新世至晚更新世活动性明显减弱的趋势与山东胶东半岛NE-NNE向断裂活动性在第四纪晚期迅速减弱的趋势一致。关键词:沧口断裂;断层泥;石英微形貌;活动时代Micro-morphologycharacteristicsandchronologyimplicationsofthegougequartzofCangkoufaultLENGChuanxu1,2,LIXuezhuan1,2,3,SHAOCheng1,2,3,SUNXi1,2(1.QingdaoSurveying&MappingInstitute,Qingdao266032,Shandong,China;2.GeotechnicalEngineeringTechnologyCenterofQingdao,Qingdao266032,Shandong,China;3.QingdaoHaiboerConstructionEngineeringTestingCo.,Ltd.,Qingdao266032,Shandong,China)Abstract:Inthispaper,themicromorphologycharacteristicsofquartzparticlesinthegougeofCangkoufaultineasternJiao-zhouBaywereobservedandstatisticallyanalyzedusingscanningelectronmicroscope.Thestatisticalresultsofquartzmicromor-phologyshowthatthelatestactiveageofCangkoufaultisfromtheMiddlePleistocenetothelatePleistocene,andthereisnoevi-denceofactivitysincetheHolocene.FromPliocenetolatePleistocene,Cangkoufaultexperiencedthreeperiodsofactivity,thefirstperiodisPliocene,thesecondperiodisearlyPleistocene,andthethirdperiodisPleistocenetolatePleistocene.Ingeneral,fromPliocenetolatePleistocene,theCangkoufaultactivityshowedasignificantweakeningtrend.ThemainactiveageofCangkoufaultwasfromPliocenetoearlyPleistocene,withthe...