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地球学报 2009
TheJiangnanorogenicbeltbetweentheYangtzeandCathaysiablocksforNeoproterozoiccontextKeywords: Jiangnanorogenicbelt,Neoproterozoic,SHRIMPU-Pb Abstract: Inrecentyears,morehighqualityzirconU-PbageshavebeenobtainedfromNeoproterozoicstrataintheSouthChinacontinentalblock.Arefinedchronostratigraphicframeworkisbeingsetuponthesedata.AbasisofthehighqualitychronostratigraphicsystemisfundamentalforglobalPrecambrianstudyandstratacorrelation.OurrecentgeologicalstudiesfocusonsystematicSHRIMPzircondating.WewillrefinethechronostratigraphicframeworkoftheNeoproterozoicandthestarttimeofthecoverbedsoftheShuangqiaoshanGroupbasingonthenewSHRIMPzirconagesfromthevolcanicashbedsintheHengyongandAnlelinformations.Accordingly,wewillalsodiscussNeoproterozoictectonostratigraphyinSouthChina
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