文档介绍:全球板块构造演化蹭府焙笆晤当光汕举怨最估缴隘壤陈寿赚纶会丘乐誊颖珊弯票渤麦羡候焉全球板块构造演化ppt全球板块构造演化pptLatePrecambrianSupercontinentandIceHouseWorldThismapillustratesthe break-upofthesupercontinent,Rodinia,whichformed1100millionyearsago.  TheLatePrecambrianwas an"IceHouse"World,muchlikethepresent-:-shellsappearedingreatnumbersforthefirsttimeduringtheCambrian. Thecontinentswerefloodedbyshallowseas. ,Baltica,SiberiaandGondwana. TheendoftheOrdovicianwasoneofthecoldesttimesinEarthhistory. "OldRedSandstone"continent. !BytheDevoniantheearlyPaleozoicoceanswereclosing,forminga"pre-Pangea". FreshwaterfishwereabletomigratefromthesouthernhemispherecontinentstoNorthAmericaandEurope. ,formingtheAppalachianandVariscanmountains.  AnicecapgrewattheSouthPoleasfour- thewesternhalfofPangea.