A5067121747- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Geological formations and processes
- Geological and Geochemical Analysis
- Geological and Geophysical Studies Worldwide
- Geochemistry and Geologic Mapping
- Geochemistry and Elemental Analysis
- Geological Formations and Processes Exploration
- Hydrocarbon exploration and reservoir analysis
- Pleistocene-Era Hominins and Archaeology
- Geological Modeling and Analysis
- Archaeological and Geological Studies
- Maritime and Coastal Archaeology
- Geomagnetism and Paleomagnetism Studies
- Ancient and Medieval Archaeology Studies
- Geological and Geophysical Studies
- Building materials and conservation
- Geological Studies and Exploration
- Marine and environmental studies
- Paleontology and Evolutionary Biology
- Archaeological and Historical Studies
- Methane Hydrates and Related Phenomena
- Marine Biology and Ecology Research
- Evolution and Paleontology Studies
- Botany and Plant Ecology Studies
Université Libre de Bruxelles
2014-2023
Institute of Natural Sciences
2013
Laboratoire de Sciences de la Terre
2010-2011
Not as hot we thought Earth's early oceans appear not to have been some suggested. The oxygen isotope composition of marine carbonates has changed markedly over the past 3.5 billion years. However, it difficult determine whether that is because a cooling seawater (from temperatures high 70°C) or an actual change in water. Galili et al. calibrated temperature-dependent fractionation between iron oxides and aqueous solutions constructed record covering 2 Their findings suggest water, rather...
We report the discovery of 715 to ca. 810 million–year–old fungal fossils through molecular characterization vestigial chitin.
Carbonate substrates (dolomites and limestones) are susceptible to fungal attack that results in significant microbial diagenesis of these substrates. In a 15‐day experimental study, fungi growing Petri dishes from airborne spores attacked petrographic thin sections chips prepared the dolomites Terwagne Formation (Viséan, Bocahut quarry at Avesnes‐sur‐Helpe, northern France) limestones Morrone di Pacentro (Lower Cretaceous, Italy). The analyses material (samples mycelia), under optical...
This study concerns the absolute LA ICP-MS U-Pb dating of hydrothermal cementation, particularly in tectonically controlled fractures filling saddle dolomites and blocky calcites carbonate succession Bekhme Formation (Campanian–Maastrichtian). Dating multiphase cementation combined with δ18O δ13C analyses, petrography field observations shows two major episodes fluid circulation. The first was measured at ~73.8 Ma is associated Zagros folding-faulting tectonic event (Late Cretaceous)...
Nanomaterials are materials that possess unique properties due to their high specific surface area and quantum effects. have diverse applications in different fields including the petroleum gas industry as additives. One of classes nanomaterials currently potential usage downstream, midstream, upstream processes is nanoparticles (NPs). Among drilling operations. It popular most critical features ensure success a operation rheological filtration loss characteristics fluid. The current work...
New carbon isotopic data from the Devonian of Ardennes (Belgium) and partly Holy Cross Mountains (Poland) highlight an abrupt high-amplitude negative excursion in punctata conodont Zone. Published information Moravia China suggests that this Middle Frasnian excursion, jointly with preceding large-scale positive shift, should be used as a global chemostratigraphic marker. Causation scenarios for ‘ Event’ are correlated neither major biota turnover nor sea-level changes, but may related to:...
Abstract The focus of this chapter is the West Congo Supergroup in Belt (WCB), which extends along western margin Craton from Gabon north to northern Angola south, and Lindi/Ubangi Lindian Fouroumbala – Bakouma Basins exposed on craton. In both regions, up two distinct diamictite horizons have been recognized, younger often associated with carbonate rocks. Geochronological constraints are generally rather poor, many deposits lack modern sedimentological analysis, glacial versus non-glacial...
New carbon and oxygen isotope data from carbonates spanning the Frasnian–Famennian (F–F) boundary in Guilin area, South China, show a broad positive δ 13 C rise fall, with sharp, short-lived negative events; this pattern is comparable to that Europe North America. The integration of stratigraphy high-resolution sequence corroborates onset excursion during third-order sea-level fall latest Frasnian. This can best be explained through increased burial org brought about by organic productivity...
Abstract In the Maritime Alps (north‐west Italy – south‐east France), Middle Triassic–lowermost Cretaceous platform carbonates of Provençal Domain locally show an intense dolomitization. Dolomitized bodies, irregularly shaped and variable in size from some metres to hundreds metres, are associated with tabular bodies dolomite‐cemented breccias, cutting bedding at a high angle, networks dolomite veins. Field petrographic observations indicate that dolomitization was polyphase process, which...
Hydrothermal diagenesis during the Zagros Orogeny produced three phases of saddle dolomites (SD1, SD2, and SD3) two blocky calcites (CI CII) in studied sections Bekhme Formation (Fm) (Campanian–Maastrichtian). Field observations, as well petrographic, cathodoluminescence (CL), Scanning Elecron Microscope (SEM), oxygen–carbon isotope analyses, indicated that unit went through multiple submergence–emergence after or hydrothermal diagenesis. These resulted a characteristic calcretized...