The geological formations of P425 consist largely of sedimentary rocks represented by carbonate and sandstone formations as well as metamorphic ones by shales as well as magmatic intrusions represented by dolerites and covered by some recent alluvium. The regional tectonics that have affected this sector to promote the deformations of these rocks by giving brittle, linear and planar microstructures that attest to the compressive phases that this terrain has experienced, confirmed even in the study of the stresses by WIN TENSOR. The preferred orientation of the stratification planes is NW-ESE (N100°-110°E) and those of the planar elements NW-SE (N120°-140°E) and NW-SSE (N140°-160°E) would justify the existence of a vast contemporary regional folding due to the intrusion of magmatic formations in the region. For linear elements; the statistical study made from the measurements taken showed a single preferential direction NW-ESE (N100°-110°E). The structural analysis of the conjugated fractures encountered in our field of study shows that these joints are largely the result of a compression resulting from the stresses σ2 whose value of the direction is N29 ° E / 8 ° SE.

This work aims at the understanding of the petrogenesis of Lukoshian metamorphic formations in the Kisenge aera. Here are presented detailed petrographic study of the gneisses and amphiboles of this sector and the new geochemical data of major elements as well as a sketch of the geological map of the study area. The macroscopic petrographic study has distinguished, in the gneisses of the Kisenge sector, two lithological facies which are gneisses and granitic gneisses. And quartz veins are observed in amphiboles. The geochemical study on basis of major elements revealed that these gneisses derived from a metamorphic evolution of granites and granodiorites of calc-alkaline series. They are therefore formed in a geodynamic context of subduction. While the amphiboles are of basic composition, resulting from the metaborphism of gabbro.

Lithostratigraphy and tectonics are the major metallogenic parameters in the development of mineralization within the Katangan Basin formations. The structural and lithostratigraphic concept of the Neoproterozoic formations of the Dipeta group can be explained by applying a qualitative method, unfortunately very laborious, to explain this sequentiality of mineralization in the bearing rocks. The Kabulungu deposit is located more or less 25 km south-west of the town of Kolwezi. This litostragraphic and petrographic study shows a special horizontal zonation: shales silicified dolomitic rocks, breaching shales, dolomitic rocks and conglomerate shales. This spatial zonation is in symbiosis with a structure that seems to be monoclinal, locally, notwithstanding the gap in R.4.2. Kabulungu is a brecciated formation with only one major preferential direction of N36 ° E break, this direction being from East to West on the anticline of the same name. The southern flank of the anticline was pushed over the northern flank along the east-west fault affecting the core of the anticline. The tectonic style for the Kabulungu region differs from other sectors only in the extent of the extrusiveness within the Kansuki fault bounded by the north and south lip. The advance of the said fault would have been put in place by an extravase mechanism of subsurface. Finally, the variation of direction following each break zone proves that the terrain of Kabulungu is unstable. The mineralization was deposited in the highly altered zones and in the referential lithological formations.

The Office of Control of the Congo in particular and of the world in general must avoid the method of destruction of foodstuffs which become unfit for consumption after weighing them to check that the quantity weighed corresponds to the nominal quantity on the Label of the package. We opted for a non-destructive method by using the batch acceptance or rejection test using a dual sampling design. This statistical method resolves the conflict between the Office of Control and the sellers of pre-packaged products of Class A (food products).

This work is a understanding of the collision geodynamic context in Katonto (25 km )in the North-West of Kolwezi. Here are presented a detailed petrographic study of the Muva group , the style tectonic and tectonic zonality on a scale of Kolwezi advanced as well as a tectonic interpretation of study area. This career was highlighted the abnormal compressionnal fault contact which separated Kundelungu from the subjacent kibarien as well as the presence of two units (sequences). The kibarian stratiform sedimentary laid out in with iron sulphides, of copper and of cobalt traces . The tectonic constraints related to compressionnal were less has less significant from the west to the east. The reactivation of faults of subjacent kibarien formation would have implemented a tectonic style in the katanguian supergroup which surmounts it. The tectonic style for the area of Kolwezi is distinguished from the other sectors only in the extent of the extrusif phenomenon. The projection of Kolwezi would have been installation by a extrusif mechanism extravase subsurface.

The evolution of the rainfall level of the city of Kolwezi (DRC) from 1953 to 2010 allowed us to distinguish the period of low precipitation from that of heavy precipitation. The frequency polygon of the Kolwezi rainfall distribution is an asymmetric curve spread to the right and shows that a normal log-law would be suitable as a probability model. This law is that of GALTON. For the estimation of the parameters of the nonlinear model having no indication of the errors of the measurements, we used the method of least squares whose optimization was made using a software algorithm MATLAB.