A5072904044- Geological formations and processes
- Geology and Paleoclimatology Research
- Geological and Geophysical Studies Worldwide
- Geological and Geophysical Studies
- Geological and Geochemical Analysis
- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- Geological Studies and Exploration
- Geological Modeling and Analysis
- Methane Hydrates and Related Phenomena
- Pleistocene-Era Hominins and Archaeology
- Soil erosion and sediment transport
- Geological Formations and Processes Exploration
- Reservoir Engineering and Simulation Methods
- Geological and Tectonic Studies in Latin America
- Geochemistry and Elemental Analysis
- African Botany and Ecology Studies
- Geophysics and Gravity Measurements
- Evolution and Paleontology Studies
- Archaeological and Historical Studies
- Mediterranean and Iberian flora and fauna
- Aeolian processes and effects
- Archaeological and Geological Studies
Université de Rennes
2015-2024
Centre National de la Recherche Scientifique
2015-2024
Géosciences Rennes
2015-2024
Université Rennes 2
2020-2024
Université de Haute-Alsace
2009-2022
UMR BIOdiversity, GEnes & Communities
2010-2018
Centre d'Études Scientifiques et Techniques d'Aquitaine
2018
Archives nationales
2015
Bibliothèque Nationale de France
2015
Observatoire des Sciences de l'Environnement de Rennes
2013-2014
ABSTRACT Tropical Africa is home to an astonishing biodiversity occurring in a variety of ecosystems. Past climatic change and geological events have impacted the evolution diversification this biodiversity. During last two decades, around 90 dated molecular phylogenies different clades across animals plants been published leading increased understanding speciation processes generating tropical African In parallel, extended palaeoclimatic records together with detailed numerical simulations...
3D stratigraphic geometries of the intracratonic Meso-Cenozoic Paris Basin were obtained by sequence correlations around 1 100 wells (well-logs). The basin records major tectonic events western part Eurasian Plate, i.e. opening and closure Tethys Atlantic. From earlier Triassic to Late Jurassic, was a broad subsiding area in an extensional framework, with larger size than present-day basin. During Aalenian time, subsidence pattern changes drastically (early stage central Atlantic opening)....
Abstract 30-35 Ma ago a major change occurred in the Mediterranean region, from regionally compressional subduction coeval with formation of Alpine mountain belts, to extensional and backarc rifting. Backarc extension was accompanied by gravitational spreading belts formed before this Oligocene revolution. Syn-rift basins during process above detachments low-angle normal faults. Parameters that control kinematics such flat-lying are still poorly understood. From Aegean Sea Tyrrhenian Alboran...
ABSTRACT The terrigeneous sediment budget of passive margin basins records variations in continental relief triggered by either deformation or climate. Consequently, it becomes a major challenge to determine accumulation histories large number found various geodynamic contexts. In this study, we developed GIS‐based method the at scale whole basin (from upstream onlap most distal deepest marine deposits) and associated uncertainties. volume sediments preserved for each time interval was...
Abstract We present new sedimentary flux data confirming that a large pulse of erosion affected the Southern African Plateau in Late Cretaceous and is likely to be related major uplift episode plateau. This short phase (i.e., less than 30 Myr duration) has commonly been difficult reconcile with mantle origin for plateau anomalous uplift: given its size, rise superplume have lasted much longer. Here we demonstrate by using simple model fluvial tilting continent as it rides over wide dynamic...
3D stratigraphic geometries of the intracratonic Meso- Cenozoic Paris Basin were obtained by sequence correlations around 1 100 wells (well-logs). The basin records major tectonic events western part Eurasian Plate, i.e. opening and closure Tethys Atlantic. From earlier Triassic to Late Jurassic, was a broad subsiding area in an extensional framework, with larger size than present-day basin. During Aalenian time, subsidence pattern changes drastically (early stage central Atlantic opening)....
The Gulf of Aden is a young and narrow oceanic basin formed in Oligo-Miocene time between the rifted margins Arabian Somalian plates. Its mean orientation, N75°E, strikes obliquely (50°) to N25°E opening direction. western conjugate are masked by lavas from Afar Plume. This paper concerns eastern margins, where 19–35 Ma breakup structures well exposed onshore within sediment-starved marine shelf. Those passive about 200 km distant, non-volcanic. Offshore, during Encens–Sheba cruise we...
Rifting between Arabia and Somalia started around 35 Ma followed by spreading at 17.6 in the eastern part of Gulf Aden. The first-order segment Alula-Fartak Socotra-Hadbeen fracture zones is divided into three second-order segments with different structure morphology. Seismic reflection data were collected during Encens Cruise 2006 on northeastern margin. In this study, we present results Pre-Stack Depth Migration multichannel seismic from western segment, which allows us to propose a...
Abstract. The topographic evolution of continents and especially the growth dismembering mountain ranges plays a major role in tectonic orogenic systems, as well regional or global climate changes. A large number studies have concentrated on description, quantification dating relief building active ranges. However, deciphering continental area submitted to recurrent deformation over several hundred millions years remains challenge. Here we present synthesis tectonic, geochronological...
Abstract We present here a new model for the formation of regolith on geological timescales by chemical weathering based assumption that rate is primarily controlled ability groundwater to transport solute away from reacting solid‐fluid interface and keep system reaching equilibrium (saturation). This allows us specify propagation front as linearly proportional pore fluid velocity which we obtain computing water table geometry in layer. The surface layer affected mass erosion. main...
Recent acceleration of sand extraction for anthropic use threatens the sustainability this major resource. However, continental erosion and river transport, which produce sediment in general, lack quantification at global scale. Here, we develop a new geodetic method to infer discharge ocean world's largest rivers. It combines spatial distribution modern sedimentation zones with high-resolution (~170 km) data from Gravity Recovery Climate Experiment (GRACE) mission launched 2002. We obtain...
Abstract The Cretaceous and Cenozoic fill of the continental margins southern Africa (South‐East Atlantic Agulhas Margins) contains a continuous record sediment supplied from South African Plateau (SAP) for past 134 million years. Estimates solid volumes deposited offshore were calculated isopach maps extrapolated vertical cross‐sections derived large amount industrial geophysical data. Solid phase accumulation rates six epochs: Lower (134–113 Ma), Mid (113–93.5 Upper (93.5–81 81–66...
Research Article| September 01, 2012 Canyon morphology on a modern carbonate slope of the Bahamas: Evidence regional tectonic tilting T. Mulder; Mulder 1Université de Bordeaux, UMR 5805 EPOC, 33405 Talence cedex, France Search for other works by this author on: GSW Google Scholar E. Ducassou; Ducassou H. Gillet; Gillet V. Hanquiez; Hanquiez Tournadour; Tournadour J. Combes; Combes G.P. Eberli; Eberli 2Division Marine Geology and Geophysics, University Miami, Florida 33149, USA P. Kindler;...
Abstract Fjords are glacially carved estuaries that profoundly influence ice-sheet stability by draining and ablating ice. Although abundant on modern high-latitude continental shelves, fjord-network morphologies have never been identified in Earth's pre-Cenozoic glacial epochs, hindering our ability to constrain ancient dynamics. We show U-shaped valleys northwestern Namibia cut during the late Paleozoic ice age (LPIA, ca. 300 Ma), penultimate icehouse, represent intact morphologies. This...