GALLET , Sylvain

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Apports de la datation 40Ar/39Ar mono-grain pour l'étude des poteries

230Th/234U and 40Ar/39Ar dating of Orgnac 3, a Quaternary Prehistoric Site in Ardèche, France

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the Alpine belt that exhibits peridotite massifs associated with high-grade crustal metamorphic units. The timing and mechanisms of exhumation of these crust–mantle associations are still debated in the Rif in Morocco as well as in the Betic Cordilleras in Spain. A structural, petrographic, and geochronological study (40Ar–39Ar method) is...

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Les résultats de datation multiméthodes de trois sites archéologiques sont présentés : ceux d'Orgnac 3 (Ardèche, France), de la grotte du Lazaret (Alpes-Maritimes, France) et de la grotte de Zafarraya (Andalousie, Espagne). Les sites ont été datés par les méthodes 40Ar/39Ar, U-Th et/ou 14C. À Orgnac 3 où on trouve Homo heidelbergensis et...

The recently discovered Nalai site is one of the Bose Basin localities, which is key to studying the earliest bifaces in China. The Nalai site has yielded an abundance of lithic artifacts, including bifaces and tektites in close association. The total fusion 40Ar/39Ar method was applied to four tektites discovered beside and contemporaneous...

Site de plein air de Nalai du paléolithique inférieur, dans le sud de la Chine, daté de 800 000 ans. Première datation argon-argon de tectites en association directe avec des bifaces en Chine. La datation par la méthode argon-argon (40 Ar/ 39 Ar) de tectites associées à des bifaces sur le site préhistorique de Nalai, localisé dans le célèbre...

site web INEE Actualités https://inee.cnrs.fr/institut_inee/fr/cnrsinfo/premiere-datation-argon-argon-de-tectites-en-association-directe-avec-des-bifaces-en-chine

The South Tien Shan (STS) belt results from the last collision event in the western Central Asian Orogenic Belt (CAOB). Understanding its formation is of prime importance in the general framework of the CAOB. The Atbashi Range preserves high‐P (HP) rocks along the STS suture, but still, its global metamorphic evolution remains poorly...

The Permian history of the Central Asian Orogenic belt is marked by large-scale strike-slip faults that reactivate former Paleozoic structures, delineated by widespread alkaline magmatism. The genetic link between the syn-kinematic granitoids emplaced in the Tien Shan range and magmas emplaced within the Tarim Large Igneous Province, and the...

Afin de préciser le cadre chronologique de la grotte du Lazaret et celle du Vallonnet, différentes méthodes de datation radiométriques (U-Th, U-Pb) et/ou paléodosimétrique (ESR) ont été appliquées sur les matériaux adéquats présents dans les niveaux pléistocènes de ces deux grottes. Les techniques d'analyse les plus modernes ont été utilisées....

The extreme southeast of France contains Lower Palaeolithic sites and is a pivotal region for enhancing our understanding of the behaviour and lifestyle of the oldest hominins in Western Europe. Several dating programs have been carried out on the three main prehistoric sites in the Alpes-Maritimes region. Vallonnet Cave, the oldest site, at...

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L'extrême sud-est de la France renferme d'importants sites du Paléolithique inférieur. Ils permettent de mieux appréhender le comportement et le mode de vie des plus anciens hominines d'Europe occidentale. Différents programmes de datations ont été réalisés sur les trois principaux sites préhistoriques des Alpes-Maritimes. La grotte du...

The extreme southeast of France contains Lower Palaeolithic sites and is a pivotal region for enhancing our understanding of the behaviour and lifestyle of the oldest hominins in Western Europe. Several dating programs have been carried out on the three main prehistoric sites in the Alpes-Maritimes region. Vallonnet Cave, the oldest site, at...

Bifacial tools discovered at about a hundred Lower Palaeolithic sites in the Bose Basin, southern China, have been previously dated to around 800,000 years ago. This age was obtained by dating four tektites directly associated with the tools at the Nalai site using the 40 Ar/ 39 Ar method (Michel et al., 2021). Similar ages on tektites from the...