Open AccessSignification Des Structures N-S Du Plateau Des Aït Maghlif (Region D’eç-Çour, Versant Meridional Du Massif Ancien Du Haut Atlas, Maroc)
Author(s) -
Anas Emran,
F. Medina
Publication year - 2016
Publication title -
european scientific journal
Language(s) - English
Resource type - Journals
eISSN - 1857-7881
pISSN - 1857-7431
DOI - 10.19044/esj.2016.v12n15p365
Subject(s) - geology , massif , sinistral and dextral , foreland basin , cretaceous , geomorphology , plateau (mathematics) , paleontology , volcano , alluvial fan , quaternary , rift , fault (geology) , structural basin , mathematical analysis , mathematics
Structural study of the recent deformations of the Eç-çour area, located on the southern slope of the massif ancien of the High Atlas, has allowed us to obtain the following results: (1) In the Ait Maghlif plateau, on the northern border of the Siroua volcanic massif, the N-S structures that are bounded by the reverse Imini fault to the north and the left-lateral Tawyalt−Agandiy fault in the south, correspond to forced folds on reverse faults and related folds related to a NW-SE compression, some of which were former normal syndepositional faults that were active in Cretaceous times; an intermediate phase corresponding to a NNE-SSW compression which is thought to have triggered the Siroua volcanism; (2) along de South Atlas Fault, the recent tectonism is expressed by folding and faulting of several Quaternary alluvial fans, some of which bear reverse/dextral slickensides.