ement ▁rock ▁in ▁what ▁would ▁become ▁western ▁New found land , ▁such ▁as ▁the ▁Round ▁P ond ▁gran ite ▁formed ▁ 6 0 2 ▁million ▁years ▁ago . ▁Sed iment ary ▁and ▁vol can ic ▁rocks ▁ 1 5 ▁kilom eters ▁thick ▁are ▁exposed ▁in ▁the ▁A val on ▁Pen ins ula , ▁depos ited ▁in ▁r ift ▁bas ins ▁as ▁fly sch ▁and ▁mol asse ▁with ▁vol can ic last ic ▁rocks ▁in ▁sub marine ▁fans . ▁The ▁G ask iers ▁Form ation ▁holds ▁diam ict ite ▁that ▁may ▁have ▁formed ▁during ▁the ▁Snow ball ▁Earth ▁gla ci ations ▁and ▁Ed ia car an ▁foss ils ▁and ▁micro f oss ils ▁have ▁been ▁found ▁in ▁some ▁rocks . ▁Northern ▁New found land ▁at ▁the ▁edge ▁of ▁the ▁Laurent ian ▁continent ▁witness ed ▁column ar ▁flo od ▁bas al ts ▁in ▁the ▁Cloud ▁Hills ▁area ▁into ▁the ▁Camb rian . ▁ ▁The ▁A val on ▁Zone ▁is ▁an ▁area ▁of ▁ 5 5 0 ▁million ▁year ▁old ▁sed iment ary ▁and ▁vol can ic ▁rocks ▁exposed ▁only ▁in ▁the ▁east ▁that ▁pres erves ▁the ▁original ▁ge ology ▁of ▁the ▁micro cont inent ▁and ▁extends ▁ 6 0 0 ▁kilom eters ▁out ▁to ▁sea ▁forming ▁the ▁below ▁water ▁F lem ish ▁Cap . ▁ ▁By ▁the ▁early ▁Dev onian , ▁the ▁A val onia ▁micro cont inent ▁and ▁the ▁Br ons on ▁Hill ▁island ▁arc , ▁coll ided ▁with ▁Laurent ia ▁to ▁form ▁the ▁mid - s ized ▁continent ▁Eur amer ica , ▁causing