[ Superposition de la tectonique du craton de Kasai et de formations du Bushimay dans le secteur de Lukelenge ]
Volume 37, Issue 4, October 2022, Pages 808–817
Télesphore Mayiba1, Crispin Musambayi2, Albert KALAU3, and Divin Tshimanga4
1 Université officielle de Mbuji-Mayi, RD Congo
2 Université Officielle de Mbujimayi, RD Congo
3 Licencié en Géologie, Chef des travaux à l’ISTA Kolwezi, Section Géologie et Mines, RD Congo
4 Université de Lubumbashi, RD Congo
Original language: French
Copyright © 2022 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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.
Author Keywords: Bushimayien, Lukelenge, Mbujimayi, fissure, formation.
Volume 37, Issue 4, October 2022, Pages 808–817
Télesphore Mayiba1, Crispin Musambayi2, Albert KALAU3, and Divin Tshimanga4
1 Université officielle de Mbuji-Mayi, RD Congo
2 Université Officielle de Mbujimayi, RD Congo
3 Licencié en Géologie, Chef des travaux à l’ISTA Kolwezi, Section Géologie et Mines, RD Congo
4 Université de Lubumbashi, RD Congo
Original language: French
Copyright © 2022 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
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.
Author Keywords: Bushimayien, Lukelenge, Mbujimayi, fissure, formation.
Abstract: (french)
Les formations géologiques du P425 sont constituées en grande partie de roches sédimentaires représentées par les formations carbonatées et gréseuses ainsi que par celles métamorphiques par les schistes ainsi que des intrusions magmatiques représentées par la dolerites et couvertes par quelques alluvions récentes. La tectonique régionale ayant affecté ce secteur à favoriser les déformations de ces roches en donnant des microstructures cassantes, linéaires et planaires qui attestent des phases compressives qu’a connu ce terrain, confirmée même dans l’étude des contraintes par WIN TENSOR. L’orientation préférentielle des plans de stratification est NW-ESE (N100°-110°E) et celles des éléments planaires NW-SE (N120°-140°E) et NW-SSE (N140°-160°E) justifierait l’existence d’un vaste plissement régional contemporain dû à l’intrusion de formations magmatiques dans la région. S’agissant des éléments linéaires; l’étude statistique faite à partir des mesures prélevées a montré une seule direction préférentielle NW-ESE (N100°-110°E). L’analyse structurale des fractures conjuguées rencontrées dans notre terrain d’étude montre que ces joints sont issus grandement d’une compression résultant des contraintes σ2 dont la valeur de la direction vaut N29°E/8°SE.
Author Keywords: Bushimayien, Lukelenge, Mbujimayi, fissure, formation.
How to Cite this Article
Télesphore Mayiba, Crispin Musambayi, Albert KALAU, and Divin Tshimanga, “Superposition of Kasai craton tectonics and Bushimay formations in the Lukelenge sector,” International Journal of Innovation and Applied Studies, vol. 37, no. 4, pp. 808–817, October 2022.
