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Aftercxperiencingaseriesofgeoteetonicdevelopmentstagesofpregeosyncline,geosynclineandplatformctc’,thisarcaturncdintoadiwarcgioninMcsozoicandCenozoicera-ItmaybedividedintotwogcodomesyStemsofJiangnan,GanyUeandthrcegeodepressionsyStcmsofXianggui,QianguiMinch