• 责任者：Wang Mingzhen (Key Laboratory of Orogenic Belts and Crustal Evolution ; Peking University ; Beijing 100871 ; China) ; Wu Chaodong
• 刊名：Acta Petrologica et Mineralogica
• 出版年：2013
• 卷期：33(6)
• 关键词：坡缕石 ; palygorskite ; 矿物学 ; mineralogy ; 古气候 ; paleoclimate ; 准噶尔盆地 ; Junggar Basin
• 页码：p.833-841
• 图表：4 illus., 2 tables, 36 refs.
• 分类号：0700
• issnNo：ISSN1000-6524
• isbnNo：CN11-1966/P

     In order to further investigate paleoclimate evolution of Cenozoic period in the southern margin of Junggar Basin,the authors systematically analyzed mineral compositions and mineralogical characteristics of palygorskite of mudstones and sandstones in the southern margin of Junggar Basin by using X-ray diffraction （XRD） and scanning electron microscopy （SEM）.The results show that mineral compositions of Cenozoic mudstones are smectite,illite,palygorskite,kaolinite and chlorite.Palygorskite is indicative of an arid,semi-arid and strong evaporation environment.Fibrous or beam palygorskites identified by mineral contact relation are typically authigenic.The arid palcoclimate is consistent with the color change of strata reflected by illite and chlorite mineral assemblages.