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Les plutons d'age Jurassique moyen du Haut Atlas central, mis en place dans des rides anticlinales de direction N45 o , sont caracterises par des facies petrographiques tres varies : roches basiques (troctolites), roches intermediaires (diorites, monzodiorites), roches evoluees (syenites), et un facies heterogene issu du melange entre les magmas evolues et les magmas intermediaires. L'etude...
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