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Dive into the research topics where André Charrière is active.

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Featured researches published by André Charrière.


Comptes Rendus Palevol | 2002

Nouvelles datations (Hauterivien supérieur–Barrémien inférieur) dans les « Couches rouges » continentales du Haut Atlas central marocain ; conséquences sur l’âge du magmatisme et des structurations mésozoïques de la chaîne Atlasique

Hamid Haddoumi; André Charrière; Monique Feist; Bernard Andreu

Abstract In the Moroccan Central High Atlas, between the Bathonian and the Aptian, marine deposits are present in three continental formations. Known to be unfossiliferous for the main part, they are attributed to the Middle Jurassic or to the Lower Cretaceous, depending on the authors. Charophytes from the top of the second formation (Iouaridene Fm), and from the base of the third one (Jbel Sidal Formation), give an Upper Hauterivian–Lower Barremian age. Thanks to these biostratigraphical data, it has been possible to distinguish the different phases of the magmatic activity and the synsedimentary tectonic events, either linked to the closure of Tethyan Atlasic troughs during the Bathonian or associated with the development of the new basins, diachronous in the Atlasic Belt, during the Lower Cretaceous.


Geobios | 1994

Microfaunes, microflores etpaléoenvironnements successifs dans la formation d'El Mers (Bathonien-?Callovien) du synclinal de Skoura (Moyen-Atlas, Maroc)

André Charrière; Francoise Dépêche; Monique Feist; Nicole Grambast-Fessard; Michel Jaffrezo; Bernard Peybernès; Miguel Ramalho

In the Middle-Atlas (Morocco), the lower part of the “Red beds” (El Mers Formation), Middle Jurassic in age,contains various microfossils which permit to reconstruct the palaeoenvironmental evolution of this area for this period. Populations of abundant charophytes, collected at the base of the formation, are assigned to a new species: Porochara hians Feist & Grambast-Fessard. Species of ostracods are generally different than the European synchronous ones. The first ostracods appearing at the base of the formation are monospecific and euryhaline (continental or brackish). They are more diversified above and correspond to a typical marine depositional environment. Marine incursions occur up to the top of the formation where they are represented by limestones bearing dasycladales and benthonic foraminifera, Late Bathonian to Early Callovian in age. The transgressive trend observed at the top of the “El Mers Formation” can be correlated to the deepening-upward trend of the Transgressive Systems Tract from the Depositional Sequence DS 158,5 (3rd order eustatic cycle LZA 3-1) which corresponds to a general transgression of the sea over the palaeostructures of the Jurassic Tethyan Basin.


Comptes Rendus De L Academie Des Sciences Serie Ii Fascicule A-sciences De La Terre Et Des Planetes | 1998

Âges et environnements des Couches rouges d'Anoual (Jurassique moyen et Crétacé inférieur, Haut-Atlas oriental, Maroc)

Hamid Haddoumi; Yves Aiméras; Anne-Marie Bodergat; André Charrière; Charles Mangold; Khadija Benshili

Lithology, sedimentology and palaeoenvironments allow a lithostratigraphic subdivision of the Red beds into five formations. A marine episode identified near the top of the first formation is Early Bathonian in age. An erosional unconformity overlies this marine level just below the Lower Cretaceous deposits. It could be related to a large sedimentary gap between the Lower Bathonian and the Lower Cretaceous series.


Carnets de géologie (Notebooks on geology) | 2016

Ostracodes non marins du Crétacé supérieur des Hauts Plateaux méridionaux, Maroc oriental

Bernard Andreu; Hamid Haddoumi; André Charrière

Upper Cretaceous non-marine ostracods from the southern High Plateaus, eastern Morocco.The marls of the upper part of the Tigri Formation in the Upper Cretaceous of the southern High Plateaus, eastern Morocco, reveal non-marine ostracod faunas from freshwater to oligohaline environments. Despite the poor specimen preservation, 23 species belonging to 14 genera have been recognized. The generic assemblages show a global paleobiogeographic distribution both on Laurasia


Archive | 2008

The Atlas System

D. Frizon de Lamotte; M. Zizi; Yves Missenard; Mohamad Hafid; M. El Azzouzi; René C. Maury; André Charrière; Z. Taki; M. Benammi; André Michard


Comptes Rendus Geoscience | 2007

Sedimentology and chemostratigraphy of the Bwipe Neoproterozoic cap dolostones (Ghana, Volta Basin): A record of microbial activity in a peritidal environment

Anne Nédélec; Pascal Affaton; Christian France-Lanord; André Charrière; Javier Alvaro


Geobios | 2010

Stratigraphie et sédimentologie des « Couches rouges » continentales du Jurassique-Crétacé du Haut Atlas central (Maroc) : implications paléogéographiques et géodynamiques

Hamid Haddoumi; André Charrière; Pierre-Olivier Mojon


Comptes Rendus Palevol | 2005

Découverte de Jurassique supérieur et d'un niveau marin du Barrémien dans les « couches rouges » continentales du Haut Atlas central marocain : implications paléogéographiques et structurales

André Charrière; Hamid Haddoumi; Pierre-Olivier Mojon


Comptes Rendus Palevol | 2009

Mise en évidence par charophytes et ostracodes de l’âge Paléocène des dépôts discordants sur les rides anticlinales de la région d’Imilchil (Haut Atlas, Maroc) : conséquences paléogéographiques et structurales

André Charrière; Hamid Haddoumi; Pierre-Olivier Mojon; Jacky Ferrière; Daniel Cuche; Lamia Zili


Geobios | 1998

La transgression du Cénomanien supérieur dans la Haute Moulouya et le Moyen Atlas méridional, Maroc

André Charrière; Bernard Andreu; Richard Ciszak; William John Kennedy; Abdelhamid Rossi; Jean-Marie Vila

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Bernard Andreu

Paul Sabatier University

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Monique Feist

University of Montpellier

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Anne Nédélec

Paul Sabatier University

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Pascal Affaton

Université Paul Cézanne Aix-Marseille III

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Richard Ciszak

Paul Sabatier University

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