▁the ▁Ed ia car an ▁the ▁continent ▁was ▁assemble d ▁from ▁several ▁ter ran es . ▁ ▁In ▁the ▁early ▁Pale oz o ic ▁the ▁environment ▁was ▁a ▁contin ental ▁slope . ▁ ▁In ▁the ▁later ▁Pale oz o ic ▁the ▁area ▁was ▁a ▁platform , ▁and ▁from ▁the ▁Mes oz o ic ▁period ▁till ▁now ▁it ▁has ▁been ▁affected ▁by ▁the ▁edge ▁of ▁the ▁Pacific ▁Ocean . ▁ ▁Str at ig raph y ▁The ▁Bad u ▁Group ▁from ▁the ▁Lower ▁Pro ter oz o ic ▁consists ▁of ▁bi ot ite ▁sch ist ▁and ▁g ne iss ▁around ▁ 1 8 0 0 ▁Ma ▁and ▁is ▁found ▁n op r th ▁of ▁Song xi . ▁ ▁The ▁May uan ▁Group ▁from ▁middle ▁Pro ter oz o ic ▁consists ▁of ▁mus cov ite ▁sch ist ▁and ▁includes ▁le pt ite , ▁mar ble ▁and ▁graph ite ▁b eds . ▁ ▁Ed ia car an ▁The ▁Lou z iba ▁Group ▁in ▁the ▁south ▁west ▁of ▁F uj ian ▁consists ▁mostly ▁of ▁sand stone . ▁ ▁The ▁W ud an ▁Form ation ▁in ▁north west ▁F uj ian ▁contains ▁gray w ack e ▁and ▁quart z ▁rich ▁sand stone . ▁ ▁The ▁D ik ou ▁Form ation ▁in ▁n ortheast ▁F uj ian ▁contains ▁bi ot ite ▁le pt ite . ▁ ▁The ▁D ing w uling ▁Form ation ▁in ▁western ▁F uj ian . ▁ ▁Long be ix i ▁Form ation ▁on ▁eastern ▁F uj ian ▁ ▁N any an ▁Group ▁in ▁south west ▁has