[ Modélisation 3D de la lithologie et la stratigraphie du bassin sédimentaire onshore ivoirien de la zone de Dabou ]
Volume 74, Issue 2, September 2024, Pages 258–268
KESSE Touvale Marcel1, Assale Fori Yao Paul2, and KOUASSI Affoué Rachel3
1 Laboratoire de sciences géographiques, génie civil et géosciences, Institut National Polytechnique Felix Houphouët Boigny, INP-HB 1093, Yamoussoukro, Côte d’Ivoire
2 PETROCI, Centre d’Analyses et de Recherche (CAR), Abidjan, Côte d’Ivoire
3 Laboratoire de sciences géographiques, génie civil et géosciences, Institut National Polytechnique Felix Houphouët Boigny, INP-HB 1093, Yamoussoukro, Côte d’Ivoire
Original language: French
Copyright © 2024 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 objective is the 3D modeling of the Dabou onshore sedimentary basin based on data from 7 surveys. To do this, a lithostratigraphic reconstruction from gamma ray data was carried out. This reconstruction made it possible to establish a correlation between the formations and build the 3D geological model using RockWorks software.The lithological reconstruction reveals the presence of layers of sand which are intercalated by clay banks which constitute the Continental terminal. These formations are topped by two layers of barren earth, the upper layer of which is eroded in places. The correlation indicates lateral facies changes. In general, there is a decrease in the thickness of the bar earth and a considerable increase in the thickness of the Continental Terminal formations from the north to the south of the Dabou region. In places, we observe the absence of clay banks which can be explained by erosion phenomena and sedimentation gaps.The three-dimensional model makes it possible to better appreciate the evolution of the formations in the area studied. The model is mainly occupied by sands in which the clays are beveled. It highlights areas of erosion, areas of depression and elevation as well as the volumes of the formations. It reveals that the Dabou area is made up of a good sandy reservoir.
Author Keywords: 3D modeling, onshore sedimentary basin, lithology, stratigraphy.
Volume 74, Issue 2, September 2024, Pages 258–268
KESSE Touvale Marcel1, Assale Fori Yao Paul2, and KOUASSI Affoué Rachel3
1 Laboratoire de sciences géographiques, génie civil et géosciences, Institut National Polytechnique Felix Houphouët Boigny, INP-HB 1093, Yamoussoukro, Côte d’Ivoire
2 PETROCI, Centre d’Analyses et de Recherche (CAR), Abidjan, Côte d’Ivoire
3 Laboratoire de sciences géographiques, génie civil et géosciences, Institut National Polytechnique Felix Houphouët Boigny, INP-HB 1093, Yamoussoukro, Côte d’Ivoire
Original language: French
Copyright © 2024 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 objective is the 3D modeling of the Dabou onshore sedimentary basin based on data from 7 surveys. To do this, a lithostratigraphic reconstruction from gamma ray data was carried out. This reconstruction made it possible to establish a correlation between the formations and build the 3D geological model using RockWorks software.The lithological reconstruction reveals the presence of layers of sand which are intercalated by clay banks which constitute the Continental terminal. These formations are topped by two layers of barren earth, the upper layer of which is eroded in places. The correlation indicates lateral facies changes. In general, there is a decrease in the thickness of the bar earth and a considerable increase in the thickness of the Continental Terminal formations from the north to the south of the Dabou region. In places, we observe the absence of clay banks which can be explained by erosion phenomena and sedimentation gaps.The three-dimensional model makes it possible to better appreciate the evolution of the formations in the area studied. The model is mainly occupied by sands in which the clays are beveled. It highlights areas of erosion, areas of depression and elevation as well as the volumes of the formations. It reveals that the Dabou area is made up of a good sandy reservoir.
Author Keywords: 3D modeling, onshore sedimentary basin, lithology, stratigraphy.
Abstract: (french)
L’objectif visé est la modélisation 3D du bassin sédimentaire onshore de Dabou à partir des données de 7 sondages. Pour ce faire, une reconstitution lithostratigraphique à partir des données gamma ray a été effectuée. Cette reconstitution a permis d’établir une corrélation entre les formations et de construire le modèle géologique 3D à partir du logiciel RockWorks. La reconstitution lithologique révèle la présence de couches de sable qui sont intercalées par des bancs d’argile qui constitue le Continental terminal. Ces formations sont surmontées par deux couches de terre de barre dont la couche supérieure est érodée par endroits. La corrélation indique des changements latéraux de faciès. De façon générale, il y a une diminution de l’épaisseur de la terre de barre et une augmentation considérable de l’épaisseur des formations du Continental Terminal du Nord au Sud de la région de Dabou. Par endroits, on observe l’absence de bancs d’argile qui peut s’expliquer par des phénomènes d’érosion, des lacunes de sédimentation. Le modèle tridimensionnel permet de mieux apprécier l’évolution des formations de la zone étudiée. Le modèle est occupé principalement de sables dans lesquels les argiles sont en biseau. Il met en évidence les zones d’érosion, les zones de dépression et d’élévation ainsi que les volumes des formations. Il révèle que la zone de Dabou est constituée d’un bon réservoir sableux.
Author Keywords: modélisation 3D, bassin sédimentaire onshore, lithologie, stratigraphie.
How to Cite this Article
KESSE Touvale Marcel, Assale Fori Yao Paul, and KOUASSI Affoué Rachel, “3D modeling of the lithology and stratigraphy of the Ivorian onshore sedimentary basin of the Dabou area,” International Journal of Innovation and Scientific Research, vol. 74, no. 2, pp. 258–268, September 2024.
