The formations crossed by the forage belong to the Bushimay System. They are essentially made up from top to bottom of soft formations (loose) including Sands and Sandstones subject to frequent landslides and which require appropriate protection methods and hard formations including limestone with hard sub-horizontal layers. Two essential parameters make it possible to interpret the ground crossed in the forage: the nature of the cuttings and the speed of penetration of the forage tool. The nature of the cuttings relates to the description of the different geological formations.

The drilling allows us to know the true underground geology through the information provided by the cores which reflect the geological formations crossed, based on those made in this kimberlite massif, several logging have been traced and allowed an in-depth study on the different kimberlite facies encountered. The different sections made it possible to make a geological correlation between the different formations crossed by taking into account the facies intersected by the survey. The vertical drilling represented on the cuts that had been carried out by MIBA for the estimation of reserves made it possible to position the additional boreholes well in order to be able to intersect the enclosing formations. These kimberlite facies were encountered, the green kimberlite facies and/or lithic kimberlite with hematite-goethite, ferruginous products; xenokimberlite facies with hematite – goethite, chalcopyrite; epiclastites with hematite, goethite, chalcopyrite and carbonate formations of the Upper Bushimayian.

One of the main objectives of structural geology is to describe the different microstructures, to understand the origin and distribution of the forces that generated them on the spatio-temporary level. Building on this momentum, a structural study was carried out on geological formations of Proterozoic age in the locality of Mpumbu, Lupatapata territory, Kasai Oriental province of the Democratic Republic of the Congo. This area is mainly crisscrossed by sedimentary formations belonging to the Bushimay supergroup. This sedimentary sequence is unaffected by regional metamorphism while highlighting two distinct successive components: sedimentary and metamorphic. The locality of Mpumbu is full of the following formations: sandstone, dolomitic limestone and shale. Brittle and planar deformations affect the majority of rocks and attest to the compressive stresses typical of this terrain. We solved the problem using Win-tensor software. Two preferential orientations of breaks have been exposed: North-South and East-West. The stress study revealed that the main stress initiating the observed deformations is oriented N57° and is inclined by 3°. Apart from the deformation, a chronological study was revealed: the breaks oriented preferably East-West intersected or often offset by a North-South oriented detachment prove their anteriorities compared to the last. Finally, a slight tilt to the north or northwest of different Mpumbu formations indicates that the region has undergone a certain inclination to the tertiary during the kimberlite intrusion of the various kimberlites in the perimeter of Bakwanga.

Rocks in the Earth’s crust can be characterized by measurable physical properties such as magnetic susceptibility, density, electrical resistivity. Geophysical methods are appropriate for measuring the contrast of these properties inside the earth. This contrast represents, among other things, a variation in the structural. The development of new geophysical data acquisition tools and techniques makes it possible to considerably increase the quality/quantity of data and, on the other hand, to reduce operating costs and implementation time. These data, beyond their quality, however require adequate processing to be usable in geological interpretation. The geological map depicts a window into the internal structure of the earth. It is the first tool used in the exploration of natural resources. Since the majority of the earth’s surface is covered by sediments and vegetation, it is important to develop other technologies that can map geology through this cover. We processed airborne magnetic data to interpret the geology of the study area. The aim of this research is to process the airborne magnetic data on Kabimba to identify anomalies, then confirm the lithological cause of each by core drilling. This determines the lithostratigraphic at the points of the geophysical anomalies. The drilling declines the true underground geology through the information provided by the cores which reflect the geological formations crossed. Two kimberlite occurrences have been highlighted in this site. They have a pipe-like structure and contain green to red kimberlite under a carbonate casing topped by Cretacic sandstone and Kalahari sand.