A regional cartographic and tectonic study provided us with valuable information on the geological processes that shaped this region and its structural characteristics. This study allowed us to better understand the regional tectonics and briefly describe the geological history of the region and the formation of the main geological units. Geological mapping: Produce a detailed geological map of the rock formations of the region, including major geological units, faults, folds, lithological contacts and geological structures (faults, folds and deformation zones). The processing of the structural data highlighted the fact that the area was affected by several phases of deformation or orogeny. It is a polyphase zone. Statistical analysis with representation of the fracture distribution confirms the presence of three major peaks. This provides irrefutable proof that the area was affected by: - ​​A family of submeridian breaks including NNW-SSE directed breaks. - An ENE-WSW fracture family. - And another fracture family orthogonal to the previous one, directed WNW-SE. The tectonic regime index (R’) values ​​of 2.62 and 2 confirm that the study area was subjected to two types of regimes: the compressive regime and the shear regime. Using Win Tensor software, we understood that from a tectonic point of view, the area is polyphase, and the analysis with distribution representation highlighted the presence of three major peaks, confirming the presence of three fracture families: the NNW-SSE fracture family, the ENE-WSW fracture family, and the WNW-ESE fracture family. Based on the different results obtained from R’, the index of the tectonic regime (rotational optimization of stress tensor and PBT axes), two types of tectonic regimes are derived, namely a compressive regime with R’ = 2.62 and a shear regime with R’ = 2.

This petrographic study involves analyzing rocks to understand their mineralogical composition, origin, and characteristics. The regional geological description allowed us to understand its geological history as well as the diversity of its rock formations by identifying and characterizing the different rocks present in the region. Microscopic analysis of thin sections helped us understand the mineralogical composition of our geological formations to gain insight into the geological processes that formed these rocks and their importance in understanding the geological phenomena of the region. In short, the study area includes metamorphic assemblages: gneisses, migmatites, amphibolites, amphiboloschists, chloritoschists, and metaquartzites. They therefore correspond to three metamorphic domains: Epizone, Mesozone, and Catazone.

This work describes the geochemical characteristics of rocks of the Bitungulu lava flow of the January 17, 2002 Nyiragongo volcano eruption.
In addition to the description in situ, samples of these rocks were analyzed in the University of Lubumbashi laboratory. Results show a high concentration of silica and mineralization dominated by nepheline. These rocks are basalts but they are close to trachy-basalts.