Authors : Patrice BONDO MUTEBA DIBWE

Volume/Issue : Volume 9 - 2024, Issue 6 - June

Google Scholar : https://tinyurl.com/49fkcw3e

Scribd : https://tinyurl.com/36fwpccn

DOI : https://doi.org/10.38124/ijisrt/IJISRT24JUN1747

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Abstract : This study concerns the gravity survey carried out in the territory of Mambasa in the province of Ituri in DR Congo, with the aim of studying its subsurface framework. We applied Free-Air and Bouguer corrections to the gravity measurements in order to eliminate gravity variations of non-geological origin. As for the graphical representation of the results, the spatial interpolation tools were useful to us in the elaboration of Bouguer anomaly maps. Then, we classified the study zone into Bouguer anomaly zones based on intensity. Gravity highs could indicate basement uplifts due to compressional movements. These uplifts would have led to the formation of granite domes which could be associated with mineralization. The enormous gravity depression would, for its part, be synonymous with a ditch or the presence of very low-density geological formations. The gravity profiles drawn support the analyzes of the maps: the anomaly curves are very fluctuating and uneven, highlighting several gravity highs and depressions. These fluctuations are probably induced by the presence of faults which separate the different anomaly zones.

Keywords : Gravity, Interpretation, Structure, Geology, Ituri.

References :

1. Lepersonne, J., (1977); Structure géologique du bassin intérieur du Zaire.
2. Shandini Njankouo Y. (2007); Implication structurale des anomalies gravimétriques en bordure septentrionale du craton du Congo.
3. Lamamra Abdessattar, Neguritsa Dimitriy, Mazari Messaoud (2019); Geostatistical Modeling by the Ordinary Kriging in the Estimation of Mineral Resources on the Kieselguhr Mine, Algeria, World Multidisciplinary Earth Sciences Symposium (WMESS 2019); IOP Conf. Series: Earth and Environmental Science 362 (2019).
4. Jean-Claude BENEDITO BHANYA (2006) ; La Filière Bois énergie A Mambasa et ses Environs : Les Acteurs impliqués, l’accessibilité et Défi.
5. E. Kadima Kabongo, Damien Delvaux, Michel Everaerts, Mwene Ntabwoba Stanislas Sebagenzi and Francis Lucazeau (2015), Neoproterozoic to Lower Paleozoic Sequences of the Congo Shield: Comparisons Between the Congo and Its Peripheral Basins, Geology and Resource Potential of the Congo Basin, Springer.
6. M. Jaffal, N. El Goumi, M. Hibti, A. Adama Dairou, A. Kchikach and A. Manar (2010), Interpretation of magnetic data of the Laachach gossan (central Jebilets, Morocco): mining implications, Estudios Geológicos.
7. Jacques Dubois, Michel Diament and Jean-Pascal Cogne (2011), Géophysique : cours et exercices corrigés, 4ème édition, DUNOD, Paris.
8. Yvette Hermine Poudjom Djomani (1993), Apport de la gravimétrie à l’étude de la lithosphère continentale et implications géodynamiques, étude d’un bombement intraplaque : le massif de l’Adamaoua (Cameroun), ORSTOM.
9. Tondozi Keto, Eli-Achille Manwana Mfumukani, Joseph Ntibahanana Munezero, Mpaka Mananga, Fulgence Mulopo Shinginyeka, Jean Felix Mupande Kapwa, Ndiadia Kandolo and Mukandila Ngalula (2018), Interpretation of gravity anomalies maps and contribution to the structural study of a sedimentary basin of major petroleum interest: Case of the Busira sub-basin in the Central basin of the DR Congo, IJIAS Vol. 24 N°1.
10. H. O. SEIGEL (1995), A guide to high precision land gravimeter surveys, Scintrex Limited.
11. Abdennacer CHANAOUI and Messaouda BAKHALED (2015), Interprétation des données aéromagnétiques de Khemis Miliana, Université de KHEMIS MILIANA, Faculté des Sciences et de la Technologie, Département des Sciences de la Matière, République Algérienne Démocratique et Populaire.
12. Philip KEAREY, Michael BROOKS and Ian HILL (2002), An Introduction to Geophysical Exploration, 3rd edition, Blackwell Science.