1 Department of Exploration-Production, Faculty of Oil, Gas and Renewable Energies, University of
Kinshasa, DR Congo.
2 Mention Geosciences, Faculty of Sciences and Technologies, University of Kinshasa, DR Congo.
3 Department of Refining and Petrochemistry, Faculty of Oil, Gas and Renewable Energies, University of
Kinshasa, DR Congo.
4 Center for Geological and Mining Research, DR Congo.
Geological investigations in the Nkara region of Kwilu Province,
DR Congo, have identified seven lithofacies: pudding, argillite, quartz
arenite, feldspathic arenite, greywackes, micaceous arenite, and soft finegrained quartz arenite. This study presents the petrographic and
geochemical compositions and paleo-environmental conditions for the first
time. Chemical analyses show slight variations in SiO2, Al2O3, and Fe2O3,
linked to mineral composition. The quartz grains indicate extensive
transport under strong hydrodynamic conditions, and iron oxides suggest
deposition in an oxidizing environment, highlighting the need for further
geological research in the area.
Keywords:
Petrography, Geochemistry, Lithofacies, Cretaceous
formations, Paleoenvironmental conditions of deposition.
