A5065800139- Geology and Paleoclimatology Research
- Geological formations and processes
- Paleontology and Stratigraphy of Fossils
- Geological and Geophysical Studies Worldwide
- Geological Modeling and Analysis
- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- Pleistocene-Era Hominins and Archaeology
- Geochemistry and Elemental Analysis
- Evolution and Paleontology Studies
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Isotope Analysis in Ecology
- Geomagnetism and Paleomagnetism Studies
- Plant Diversity and Evolution
- Clay minerals and soil interactions
- Archaeological and Geological Studies
- Maritime and Coastal Archaeology
- Pacific and Southeast Asian Studies
- Geographic Information Systems Studies
- Marine and environmental studies
- Wildlife Ecology and Conservation
- Geological Formations and Processes Exploration
- Therapeutic Uses of Natural Elements
- Geotourism and Geoheritage Conservation
Bureau de Recherches Géologiques et Minières
2014-2024
Institut des Sciences de la Terre
2013-2023
Institut des Sciences de la Terre d'Orléans
2013-2023
Centre National de la Recherche Scientifique
1998-2018
Université d'Orléans
2014-2018
University of New Caledonia
2014
Territoires
1996-2013
Université de Rouen Normandie
1998-2003
The Paleocene-Eocene Thermal Maximum (PETM) is correlated with the first occurrences of earliest modern mammals in Northern Hemisphere. latest Paleocene Clarkforkian North American Land Mammal Age, that has yielded rodents and carnivorans, only exception to this rule. However, until now no pre-PETM localities have Europe or Asia. We report equivalent Age deposits basal Sparnacian facies at Rivecourt, north-central part Paris Basin. new terrestrial vertebrate macroflora assemblages are...
Abstract During the early Cretaceous, successive tectonic phases and several sea level falls resulted in emersion of main part western Europe development thick “lateritic” weathering. This long period continental evolution ended with Upper Cretaceous transgressions. this period, exposed lands displayed a mosaic diverse morphologies weathered landscapes. Bauxites are most spectacular paleoweathering features, known for southern France. Recently, new residual outcrops have been identified,...
Terra Nova, 24, 77–85, 2012 Abstract Comparing palaeolatitudes estimated from remanent magnetization data of ferricrete developed over laterite at two sites (Goro and Tiébaghi) against the apparent polar wandering path Australia provides new time constraints for peridotite weathering in New Caledonia. The Tiébaghi Massif West Coast klippes displays a single episode development during latest Oligocene times. By contrast, Goro site southern part ‘Massif du Sud' reveals more complex history...
Terra Nova, 24, 114–122, 2012 Abstract The Palaeocene/Eocene boundary (P/EB) and the Palaeocene–Eocene Thermal Maximum (55.8 Ma) are defined stratigraphically based on carbon isotope ratios of various materials. Here, position P/EB is refined in terrestrial–lacustrine swampy Vasterival section (Upper Normandy coast, France) by using isotopes measured dispersed organic matter (δ 13 C org ). Moreover, nitrogen 15 N ) are, for first time Palaeogene record, associated with lithological data to...
A lower Miocene coarse conglomerate that crops out in the Népoui Peninsula does not represent base of marine transgression followed obduction New Caledonia. Instead, conglomeratic alluvial fan contains peridotite cobbles and reworked weathering products records a short-lived episode terrestrial erosion intercalated between two intervals subsidence marked by carbonate deposition. Considering sea level evolution reported literature, it is concluded neither nor were driven variation. In...
Les travaux récents menés sur le Pléistocène de la France du Nord-Ouest permettent compléter et réviser les tableaux stratigraphiques publiés dans années 80. Par rapport à ces premières synthèses, nouveaux apports sont essentiellement représentés par éléments suivants : - Définition nouvelles formations marines fluviatiles pour Pliocène inférieur Bassin Carentan (Normandie) ; Mise en évidence pléistocènes holocènes Normandie des systèmes Seine moyenne Somme séquences référence l'Eémien Début...
The exhumation history of basement areas is poorly constrained because large gaps in the sedimentary record. Indirect methods including low temperature thermochronology may be used to estimate but these require an inverse modeling procedure interpret data. Solutions from such are not always satisfactory as they too broad or conflict with independent geological This study shows that input constraints necessary obtain a valuable and refined identify presence former cover presently completely...
The poorly studied iron-rich terrestrial sediments, referred to as the Fluvio-lacustrine Formation, that crop out in southern part of Grande Terre New Caledonia document last 25 Ma geological history island. age this formation, which is mainly derived from erosion an ultramafic regolith, not tightly constrained yet; however, it has recorded several episodes post-obduction and sedimentary infill preceded followed by weathering reactivated erosion. A correlation with early Miocene slab...
Abstract Weathered residual accumulations termed Clay‐with‐flints (Argiles à silex) overlying Cretaceous deposits are widespread in southern England and northwestern France. Geological pedological studies some field surveys indicate their distribution, nature, age origin. In France, the microfaunas preserved hollow flints of demonstrate preservation parent Chalk stratigraphy sections studied, i.e. corresponds to situ weathering profiles. However, an important part clay component is derived...
est destinée au dépôt et à la diffusion de documents scientifiques niveau recherche, publiés ou non, émanant des établissements d'enseignement recherche français étrangers, laboratoires publics privés.
En Normandie occidentale, seule la région du Cotentin a conservé une épaisse série sédimentaire cénozoïque (environ 280 m), bien qu'en partie cachée sous les terrains holocènes. Dès l'Éocène, le bassin est ouvert sur domaine atlantique, protégé par des hauts‑fonds rocheux paléozoïques, chenalisant eaux et accélérant courants tidaux. Selon époques, c'est morphologie de baie ou couloir tidal, encadrée reliefs Nord Sud Cotentin. Les dépôts sédimentaires cénozoïques correspondent à périodes...
come from teaching and research institutions in France or abroad, public private centers.L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques niveau recherche, publiés ou non, émanant des établissements d'enseignement recherche français étrangers, laboratoires publics privés.
The Anglo-Belgo-Paris Basin, historical cradle of the Paleogene stratigraphy since 19th century, is known by presence very specific so-called “Sparnacian” deposits (very diverse and laterally highly variable, predominantly lagoonal to terrestrial facies), which encompass short stratigraphic interval Paleocene-Eocene Thermal Maximum (PETM). Due insufficient nature paleontological record, succession Paris Dieppe-Hampshire basins still needs be robustly chronostratigraphically correlated with...
Abstract On the southeastern margin of Paris Basin, Nivernais region, marine deposits have been continuous all along Jurassic period. The sea withdrew a first time during Upper Tithonian. This regression coincided with erosion and weathering. Apparently, invaded again region only Albian, to which are attributed few relicts glauconitic sandstone quartz pebbles. youngest occurrences Santonian-Campanian age, made silicified urchins microfauna preserved in flint flows. Tertiary limited small...