Palynologie et environnements des sédiments du Dévonien de Saïda (Algérie nord occidentale)

Abstract

From a sedimentological point of view, the Devonian sedimentary units of the Tiffrit Massif are linked to a gravitational deposition controlled by sea level rise and significant subsidence. Facies seems to change along an East-West axis. The particle size, the nature of the facies, and their extreme variability over short distances indicate a slope apron environment of deposition. The lithological, sedimentological and environmental characteristics of the studied system are consistent with deposition in an active tectonic margin setting.

Unraveling a distal segment of the West African Craton Paleozoic margin: Stratigraphy of the Mougueur inlier of the eastern High Atlas, Morocco

“…In contrast, Pragian to Upper Devonian turbiditic sequences characterize the central-eastern part of the Meseta domain (Hoepffner et al, 2005(Hoepffner et al, , 2006Zahraoui, 1994). Likewise, Bougarra et al (2012Bougarra et al ( , 2018) describe a Praguian-Emsian turbiditic complex in the Saı ¨da area of northwestern Algeria. Hence, we may suggest that the Mougueur Massif was at that time a distal part of the turbiditic fan that extended further to the north in the central-eastern Meseta and northwestern Algeria.…”