<正>MostofU-depositsofChina,speciallythelargeU-deposits,aresimilartotheU-depositsofmanycountries.Therearecloserelationsbetweentheirformation,distributionsoftimeandspaceandthetectono-magmaticactivationofcrust.Thetectono-magmaticactivationdiscussinginthispaper(thefollowingcalledactivationforshort)isonlyconfinedtotheactivationaftergeosynclinestageortheconsolida-tionofplatform.Asaresult,thepalingeneticgeosynclineandmedianmassifalsobelongtothediscussingscope.Thetectono-magmatismofgeosynclinestageitselfanditsrelevantU-depositsdonotbelongtothe
