[ Etude cartographique et pétrographique de Ntoni et ses environs (Territoire de Mbanza Ngungu, Province du Kongo Central, RD Congo) ]
Volume 83, Issue 2, March 2026, Pages 264–280
Nsakala Tanda Reddy Andy1, Penoy Delphin Delly2, Prisca KATSHUNGA AKAZIA3, Ngumba Ngumba Victoire4, Kazadi Mujinga Stella5, Mabaya Arielle Arielle6, Lubamba Lubamba Bob7, Buluku Palamoke Grace8, and Ishaku Kaunga Omega9
1 Centre National de Télédétection (CNT), Kinshasa I, RD Congo
2 Centre de Recherches Géologiques et Minières (CRGM), B.P. 898, Kinshasa I, RD Congo
3 Centre Nationale de télédétection (CNT), Kinshasa, RD Congo
4 Centre National de Télédétection (CNT), Kinshasa I, RD Congo
5 Centre National de Télédétection (CNT), Kinshasa I, RD Congo
6 Centre National de Télédétection, RD Congo
7 Centre National de Télédétection, RD Congo
8 Centre de Recherches Géologiques et Minières (CRGM), B.P. 898, Kinshasa I, RD Congo
9 Centre National de Télédétection (CNT), Kinshasa I, RD Congo
Original language: French
Copyright © 2026 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 cartographic and petrographic study of the Ntoni region, located in the Mbanza-Ngungu territory in Kongo Central province (DRC), aims to characterize and map the local geological formations. The methodology combines a documentation phase, a geological survey in the field, and microscopic analyses in the laboratory. The materials studied are mainly sedimentary rocks including limestones, dolomites, sandstones, and shales, whose limestone facies are classified according to Folk (biomicrites, intrasparites, intramicrites, biosparites, biopelsparites). The region benefits from a Sudanese climate and a varied relief, with a geological context dominated by the Neoproterozoic Inkisi group, composed of alternating schistose-sandstone and limestone terrains. The study made it possible to specify the lithology, spatial distribution, and depositional environment of the rocks, which vary between marine and continental settings depending on geological periods. An updated geological sketch was produced, showing significant stratigraphic complexity. This work enriches the geological knowledge of Kongo Central by providing a better understanding of the sedimentary formations, with implications for mineral resource exploitation and land use planning. It paves the way for more in-depth research on regional stratigraphy and tectonics.
Author Keywords: Geological mapping, Petrography, Sedimentary rocks, Inkisi Group, Neoproterozoic, Lithofacies.
Volume 83, Issue 2, March 2026, Pages 264–280
Nsakala Tanda Reddy Andy1, Penoy Delphin Delly2, Prisca KATSHUNGA AKAZIA3, Ngumba Ngumba Victoire4, Kazadi Mujinga Stella5, Mabaya Arielle Arielle6, Lubamba Lubamba Bob7, Buluku Palamoke Grace8, and Ishaku Kaunga Omega9
1 Centre National de Télédétection (CNT), Kinshasa I, RD Congo
2 Centre de Recherches Géologiques et Minières (CRGM), B.P. 898, Kinshasa I, RD Congo
3 Centre Nationale de télédétection (CNT), Kinshasa, RD Congo
4 Centre National de Télédétection (CNT), Kinshasa I, RD Congo
5 Centre National de Télédétection (CNT), Kinshasa I, RD Congo
6 Centre National de Télédétection, RD Congo
7 Centre National de Télédétection, RD Congo
8 Centre de Recherches Géologiques et Minières (CRGM), B.P. 898, Kinshasa I, RD Congo
9 Centre National de Télédétection (CNT), Kinshasa I, RD Congo
Original language: French
Copyright © 2026 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 cartographic and petrographic study of the Ntoni region, located in the Mbanza-Ngungu territory in Kongo Central province (DRC), aims to characterize and map the local geological formations. The methodology combines a documentation phase, a geological survey in the field, and microscopic analyses in the laboratory. The materials studied are mainly sedimentary rocks including limestones, dolomites, sandstones, and shales, whose limestone facies are classified according to Folk (biomicrites, intrasparites, intramicrites, biosparites, biopelsparites). The region benefits from a Sudanese climate and a varied relief, with a geological context dominated by the Neoproterozoic Inkisi group, composed of alternating schistose-sandstone and limestone terrains. The study made it possible to specify the lithology, spatial distribution, and depositional environment of the rocks, which vary between marine and continental settings depending on geological periods. An updated geological sketch was produced, showing significant stratigraphic complexity. This work enriches the geological knowledge of Kongo Central by providing a better understanding of the sedimentary formations, with implications for mineral resource exploitation and land use planning. It paves the way for more in-depth research on regional stratigraphy and tectonics.
Author Keywords: Geological mapping, Petrography, Sedimentary rocks, Inkisi Group, Neoproterozoic, Lithofacies.
Abstract: (french)
L’étude cartographique et pétrographique de la région de Ntoni, située dans le territoire de Mbanza-Ngungu en province du Kongo Central (RDC), vise à caractériser et cartographier les formations géologiques locales. La méthodologie combine une phase de documentation, un levé géologique sur le terrain et des analyses microscopiques en laboratoire. Les matériaux étudiés sont principalement des roches sédimentaires comprenant des calcaires, dolomies, grès et shales, dont les faciès calcaires sont classifiés selon Folk (biomicrites, intrasparites, intramicrites, biosparites, biopelsparites). La région bénéficie d’un climat soudanien et d’un relief varié, avec un contexte géologique dominé par le groupe Inkisi d’âge néoprotérozoïque, formé de terrains schisto-gréseux et calcaires en alternance. L’étude a permis de préciser la lithologie, la répartition spatiale et l’environnement de dépôt des roches, qui varient entre milieux marins et continentaux selon les périodes géologiques. Une esquisse géologique actualisée a été réalisée, montrant une complexité stratigraphique importante. Ce travail enrichit la connaissance géologique du Kongo Central en offrant une meilleure compréhension des formations sédimentaires, avec des implications pour l’exploitation des ressources minérales et l’aménagement territorial. Il ouvre la voie à des recherches plus approfondies sur la stratigraphie et la tectonique régionales.
Author Keywords: Cartographie géologique, Pétrographie, Roches sédimantaires, Groupe Inkisi, Néoprotérozoique, Lithofaciès.
How to Cite this Article
Nsakala Tanda Reddy Andy, Penoy Delphin Delly, Prisca KATSHUNGA AKAZIA, Ngumba Ngumba Victoire, Kazadi Mujinga Stella, Mabaya Arielle Arielle, Lubamba Lubamba Bob, Buluku Palamoke Grace, and Ishaku Kaunga Omega, “Cartographic and petrographic study of Ntoni and its surroundings (Mbanza Ngungu territory, Kongo Central Province, DR Congo),” International Journal of Innovation and Scientific Research, vol. 83, no. 2, pp. 264–280, March 2026.
