A 3D geological model of the basement of the Cuvette Basin was built based on satellite gravimetric data and gradiometry maps, geological maps and a gravimetric inversion work performed by CARSON on a high resolution gravimetric survey it acquired in 1993 in the Republic of Congo.
A full report (in french) compiled by EOSYS and the Database Team of SNPC is available here upon request.
This work indicates the presence several depositionnal centers with sediment thicknesses up to 8000m deposited over a basement made of denser material probably of magmatic origin.
A regional bibliographical analysis coupled with an re-examination of the NGoki seismic sections along with the seismic sections acquired in the Republic of Congo (ROC) shows the presence of a carbonate shelf formation over a continental scale: the “Schisto Calcaire” SubGroup of Neoproterozoic age with a thickness up to 1000m
Re-analysis of ROC and NGoki seismic along with recent fieldwork has allowed to gain confidence in the determination of seismic markers as well as to find depositional laws within the precambrian sequence that can be applied to calculate a depositional model within the basins identified by gravity surveys
This model is based on: