Evolution morphologique récente du bas plateau de Tiznit (Maroc) :

Abstract : The study of morphological heritages based on the detailed analysis of selected sections allowed us to draw the main lines of the evolution of pleistocene and hologene landscapes in the Tiznit low plateau and its littoral margin, from the tensiftian to the present. The atlantic coast of this low plateau is not an homogeneous environment. It is composed of the juxtaposition of several blocks delimited by faults. The plio-villafranchien neotectonic has determined low areas where successive sea incursions occured, and up-lifted areas, without these ones. On the low plateau, the alluvial filling of the Tamdroust Ouadi took place during the upper soltanian and the rharbian, behind a travertine dam. The morphodynamic, sedimentary and prehistoric features enabled us to follow with more or less precision the evolution of paleo-landscapes. In a global mediterranean-type environment, we can see various alternate humid and dry periods on the littoral and on the low plateau. The two last arid periods occured at upper soltanian (29000 - 19000 B.P.) and around 5000 B.P. The two last periods are these of the last soltanian (18000 - 10000 B.P.) and the present one, which started after 4000 B.P.
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Abderrahman Ouammou. Evolution morphologique récente du bas plateau de Tiznit (Maroc) :. Géographie. Université Nancy 2, 1993. Français. ⟨NNT : 1993NAN21024⟩. ⟨tel-01776434⟩

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