▁contin ental ▁cr ust ▁which ▁had ▁come ▁into ▁existence ▁in ▁the ▁Ar che an ▁nearly ▁ 2 . 5 ▁billion ▁years ▁had ▁already ▁experienced ▁up ▁to ▁eight ▁super cont inent ▁cycles . ▁ ▁In ▁the ▁late ▁P rec amb rian ▁and ▁Pale oz o ic , ▁A val onia ▁( named ▁after ▁the ▁A val on ▁Pen ins ula ▁in ▁New found land ) ▁formed ▁as ▁a ▁vol can ic ▁island ▁arc ▁off ▁the ▁coast ▁of ▁the ▁super cont in ents ▁P annot ia ▁which ▁lost ▁land ▁through ▁rif ting ▁and ▁became ▁G ond w ana . ▁This ▁vol can ic ▁island ▁arc ▁was ▁later ▁split ▁into ▁different ▁areas , ▁but ▁currently ▁under lies ▁southern ▁New ▁England , ▁Maine , ▁Nova ▁Scot ia , ▁Prince ▁Edward ▁Island , ▁southern ▁New ▁Brun sw ick , ▁southern ▁Ireland , ▁England , ▁Wales , ▁Belg ium , ▁the ▁Netherlands ▁and ▁much ▁of ▁north ▁Germany . ▁North west ▁New found land ▁includes ▁older ▁rocks ▁affected ▁by ▁the ▁Gren ville ▁or ogen y ▁in ▁the ▁late ▁Pro ter oz o ic ▁during ▁the ▁collision ▁of ▁contin ents ▁to ▁form ▁the ▁previous ▁super cont inent ▁Rod in ia . ▁ ▁Ex amples ▁of ▁ancient ▁rocks ▁from ▁this ▁period ▁include ▁the ▁late ▁P rec amb rian ▁Har bour ▁Main ▁Group ▁ign im br ite ▁and ▁ash ▁flow ▁t uff ▁with ▁obs id ian ▁and ▁aug ite ▁in ▁the ▁center ▁of ▁the ▁A val on ▁Pen ins ula . ▁Ro cks ▁of ▁similar ▁age ▁were ▁forming ▁on ▁Gren ville ▁Province ▁bas