Print ISSN: 0031-0247
Online ISSN: 2274-0333
La palichnofaune de vertébrés tétrapodes du permien supérieur du Bassin de Lodève .
Les traces de pas d'amphibiens, de dinosaures et autres reptiles du Mesozoïque Français
Révision des Rhombodontidae (Neoselachii Batomorphii) des bassins à phosphate du Maroc
A pangolin from the French Quercy phosphorites
Les oiseaux aquatiques (Gaviiformes à Anseriformes) de Saint-Gerand-le-Puy. Révision systématique.
New datation of the Tafna Basin (Algeria): A combination between biochronological and magnetostratigraphical datacorrelations; Late Miocene; North Africa; Rodentia
The Tafna Basin corresponds to the lowlands, which are located in front of Tessala and Traras ranges, below the Tlemcen mountains, Algeria. This basin displays a complete sedimentary cycle dominated by lagoonal-fluvial and marine deposits. The continental formations located at the base of these deposits are mainly composed of alternating sandstones and clays. An early late Miocene age has been previously attributed to them, based on direct correlations with marine deposits. Search for micromammal fossils led to the discovery of three different rodent species from a single level of the Djebel Guetaf section, located at the bottom of these deposits. The rodent assemblage indicates a late Miocene age. Combined magnetostratigraphical and biostratigraphical investigations were carried out to provide a more accurate age control of these continental deposits. Sixty-four oriented rock samples were collected for a magnetostratigraphic study along a 92 meters thick section including the fossiliferous layer. Rock magnetic investigations indicate the presence of both high and low coercivity minerals. Specimens subjected to progressive thermal demagnetization procedures show that the samples exhibit a high temperature magnetization component and display a normal polarity. Based on biostratigraphic constraints, the Guetaf section is correlated with Chron C4An, indicating an age ranging from
Published in Vol.39-1 (2015)