浙江陈塘坞组粘土矿物特征及其地质意义  

Characterization and Geological Significance of Clay Minerals in Chentangwu Formation in Zhejiang

作　　者：吴维维[1] 董传万[1] 马晓雄[1] 顾虹艳[1] 吕青[1] Wu Weiwei;Dong Chuanwan;Ma Xiaoxiong;Gu Hongyan;Lv Qing(College of Earch Science,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学地球科学学院,杭州310027

出　　处：《科技通报》2017年第9期42-47,共6页Bulletin of Science and Technology

基　　金：国家自然科学基金项目(批准号:40872051)

摘　　要：对浙江浦江地区新元古代地层陈塘坞组泥岩进行粘土矿物的研究,探讨其沉积环境,有利于为江绍拼合带的形成提供理论意义,得到新的认识。利用X射线衍射(XRD)分析、红外测试(IR)及扫描电子显微(SEM)分析方法,得到陈塘坞组泥岩粘土矿物种类主要以伊利石和鲕绿泥石为主,出现高岭石和蒙脱石,且鲕绿泥石为自生粘土矿物。其含有高岭石的粘土矿物组合代表了潮湿气候。鲕绿泥石是浅海标志性矿物,指示了陈塘坞组当时处于浅海环境。We recognize some characteristic clay minerals in Neo-proterozoic Chentangwu formationmudstone in Pujiang.Concerning their specific properties,these clay minerals can be a proxy to thepaleo-deposional environment,also can argue for the formation of Jiangshan-Shaoxin Suture Zone.Xraydiffraction,IR and SEM analyses shows the clay minerals are consist mainly of illite and chamosite,only in some cases kaolinite and montmorillonite appear.The authigenic chamosite is an indicator ofshallow marine environment and kaolinitic minerals of warm and humid climate,suggesting the studyregion was a shallow marine at that time.

关 键 词：陈塘坞组 粘土矿物 鲕绿泥石 海相 

分 类 号：P585[天文地球—岩石学]