Evolution plio-quaternaire et implications tectoniques du piémont nord des monts des Kebdana (Nord Est du Maroc)

On the northern piedmont of kebdana mountains,very thick continental deposits down from this massif. the piedmont slope stretched out,composed of irregular alternations of angular limestone gravel and red silts,all covered with a thick calcrete. these glacis are truncated in active cliffs by the sea all along the coast of kebdana. the height of the cliff decreases gradually from east to west,from 69m to zero at arekmane. to the west of arekmane,the fine silt of recent quaternary arrives directly at nador lagoon. this sector is in a subsiding area,as evidenced by the thick continental series and disappearance in the current sea of their successive baseline levels. when,at the pediment,we see reappearing bedrock glacis,there is no interposed marine quaternary. subsidence is probably currently pursuing the right of the plain of bou areg; according to the sketch of the marine quaternary sequences at melilla.