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Les faunes de coraux (Anthozoaires Scléractiniaires) de la façade atlantique fr...
Cahuzac, B.; Chaix, C.The study of new abundant coral crops and a systematic revision of the historic collections allow us to extend significantly the data about the Upper Oligocene and Miocene Scleractinia of the French atlantic basins. The SW and W-NW France faunas have been considered, and complete lists of the different defined taxa are presented. The generallines of the evolution of this group are specified, and linked to the p...
Répartition des foraminifères benthiques dans les gisements de surface du Miocè...
Cahuzac, B.; Poignant, ArmelleThe Aquitaine Basin (southwestern France) is known since long ago for its richness in marine miocene deposits of various facies. A few stratotypes concerning this period have been described in the investigated area. The stratigraphical framework has been recently revised and the study of new exposures completes our knowledge on these levels. In the present work, the authors produce a biostratigraphical distribu...
Etude de populations de Glycymeris (Bivalvia, Glycymerididae) du Miocène d'Aqui...
Cahuzac, B.; Cluzaud, A.; Lesport, J. F.; Rlngeade, M.Abundant crops of Glycymeris have been made in the neritic bioclastic deposits of the Aquitaine Basin. After an outline about the Chattian taxa, the 5 Lower Miocene lineages are presented; G. cor is plainly predominant. Then, the Middle Miocene faunas are also detaiIed, G. inflatus and G. bimaculatus being the most frequent taxa. A test of biometrical analysis about the G. cor species is presented.
Les faunes de coraux (Anthozoaires Scléractiniaires) de la façade atlantique fr...
Cahuzac, B.; Chaix, C.The study of new abundant coral crops and a systematic revision of the historie collections allow us to extend significantly the data about the Upper Oligocene and Miocene Scleractinia of the French atlantic basins. The SW and W-NW France faunas have been considered, and complete lists of the different defined taxa are presented. The general lines of the evolution of this group are specified, and linked to the ...
Répartition des foraminifères benthiques dans les gisements de surface du Miocè...
Cahuzac, B.; Poignant, A.The Aquitaine Basin (southwestem France) is known since long ago for its richness in marine miocene deposits ofvarious facies. A few stratotypes concerning this period have bccn described in the investigated area. The stratigraphical framework has becn recently revised and the study of new exposures completes our knowledge on these levels. In the present work, the authors produce a biostratigraphical distributi...
Etude de populations de Glycymeris (Bivalvia, Glycymerididae) du Miocène d'Aqui...
Cahuzac, B.; Cluzaud, A.; Lesport, J. F.; Ringeade, M.Abundant crops of Glycymeris have been made in the neritic bioclastic deposits of the Aquitaine Basin. After an outline about the Chattian taxa, the 5 Lower Miocene lineages are presented; G. cor is plainly predominant. Then, the Middle Miocene faunas are also detaiIed, G. inflatus and G. bimaculatus being the most frequent taxa. A test of biometrical analysis about the G. cor species is presented.
Nouvelles données sur le Miocène moyen marin ("Sallomacien") de Gironde (Bassin...
Follioti, M.; Pujol, C.; Cahuzac, B.; Alvinerie, J.The Mid Miocene marine formations of Salles area (former "Sallomacian" stage) have been studied again from numerous outcrops and cores. The deep structural framework influences notably of the characteristics and distribution of the deposits, which are neritic. The stratigraphy is stated precisely thanks to the planktonic fauna and floradetailed examination (probably Serravallian zones NN6 - N12). Several paleob...
Palaeontological data about the climatic trends from Chattian to present along ...
Lauriat-Ragei, A.; Brebioni, Ph.; Cahuzac, B.; Chaixi, Ch.; Ducasses, O.; Ginsburg, L.; Janin, M.-C.; Lozouet, P.; Margerel, J.-P.; Nascimento, A.Climatic changes that affected the Northeastern Atlantic frontage are analyzed on the basis of the evolution of faunas and floras from the late Oligocene onwards. The study deals with calcareous nannoplankton, marine micro- and macrofaunas, some terrestrial vertebrates and vegetal assemblages. The climate, first tropical, underwent a progressive cooling (North-South thermic gradient). Notable climatic deteriora...
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