A5009901072- Geological and Geochemical Analysis
- Paleontology and Stratigraphy of Fossils
- Geochemistry and Geologic Mapping
- Geological formations and processes
- Geological and Geophysical Studies
- Geology and Paleoclimatology Research
- Paleontology and Evolutionary Biology
- Evolution and Paleontology Studies
- Hydrocarbon exploration and reservoir analysis
- Geological Modeling and Analysis
- Geological and Geophysical Studies Worldwide
- Geochemistry and Elemental Analysis
- earthquake and tectonic studies
- Algal biology and biofuel production
- Pleistocene-Era Hominins and Archaeology
- Aeolian processes and effects
- Protist diversity and phylogeny
- Porphyrin and Phthalocyanine Chemistry
- Isotope Analysis in Ecology
- Spacecraft Design and Technology
- Space Satellite Systems and Control
- Mining Techniques and Economics
- Geothermal Energy Systems and Applications
- Coastal and Marine Dynamics
- Chemistry and Stereochemistry Studies
Royal Museum for Central Africa
2012-2024
University of Liège
1987-2021
Mineral Resources
2017
A well preserved and diversified microfossil assemblage is reported from the Meso–Neoproterozoic Mbuji-Mayi Supergroup in Kasai oriental Province, central part of Democratic Republic Congo. total 49 taxa belonging to 27 genera were identified, including 11 species unambiguous eukaryotes, 10 possible eukaryotes or prokaryotes 28 probable bacteria. This more diverse than previously but includes coeval worldwide assemblages. It characterized by abundant sphaeromorphs, filamentous colonial...
Sedimentary rocks containing microfossils are crucial archives to reconstitute early life evolution on Earth. However, the preservation of within depends several physico-chemical factors. Among these factors, thermal host can be decisive. Here, we investigated carbonaceous shale samples exquisitely preserved organic-walled assemblages from three Proterozoic shallow marine sedimentary sequences: Mbuji-Mayi Supergroup (Democratic Republic Congo, Congo Basin), Atar/El Mreïti Group (Mauritania,...
Knowing which geodynamic regimes characterised the early Earth is a fundamental question. This implies to determine when and how modern plate tectonics began. Today, tectonic regime dominated by mobile-lid including deep cold subduction. However, in (4.5 2 Ga) stagnant-lid may also have occurred. The study of high pressure-low temperature (HP-LT) metamorphic rocks important, because these are only produced present-day subduction settings. Here, we characterize oldest known HP-LT eclogite...
Abstract The acquisition of photosynthesis is a fundamental step in the evolution eukaryotes. However, few phototrophic organisms are unambiguously recognized Precambrian record. situ detection metabolic byproducts individual microfossils key for direct identification their metabolisms. Here, we report new integrative methodology using synchrotron-based X-ray fluorescence and absorption. We evidence bound nickel-geoporphyrins moieties low-grade metamorphic rocks, preserved within cells ~1...
The early Paleogene is critical for understanding global biodiversity patterns in modern ecosystems. During this interval, Southern Hemisphere continents were largely characterized by isolation and faunal endemism following the breakup of Gondwana. Africa has been proposed as an important source area origin several marine vertebrate groups but its record poorly sampled, especially from sub-Saharan Africa. To document ecosystems Central Africa, we revised stratigraphic context sedimentary...
The acritarch assemblages of strata from the base Upper Proterozoic Sheepbed Formation to Lower Cambrian (Atdabanian) Sekwi are described. sections sampled in southwestern (internal) structural units where erosion beneath "sub-Cambrian"(?) unconformity is least evident. Problems lithostratigraphic correlation post-Sheepbed, pre-Backbone Ranges formations remain. Acritarchs indicate age and Blue-flower above it latest (Vendian), whereas that Vampire Early (Atdabanian). Backbone has not...
In this paper, we present new age constraints for the lower part of Meso-Neoproterozoic sedimentary Mbuji-Mayi Supergroup (Democratic Republic Congo, DRC). This preserves a large diversity organic-walled microfossils, evidencing diversification early eukaryotes first time in Central Africa. We use different methods such as situ U-Pb geochronology by LA-ICP-MS and U-Th-Pb chemical datings Electron Microprobe on diagenetic detrital minerals xenotimes, monazites zircons. attempt to better...
This study presents the results of three borehole correlations in Upper Precambrian Bushimay Supergroup, from Kasai and Shaba provinces Zaire. The most western comes Lubi Valley (eastern Kasai) cuts lower part Supergroup (BI). One palynological sample top BI Formation (BIe2) showed a microflora with Middle Riphean affinities that confirms radiometric age previously found for this area. Kanshi valley located at about 30 km to southeast valley, BII which consists stromatolitic dolomites black...