Journal of Geosciences and Geomatics
ISSN (Print): 2373-6690 ISSN (Online): 2373-6704 Website: https://www.sciepub.com/journal/jgg Editor-in-chief: Maria TSAKIRI
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Journal of Geosciences and Geomatics. 2024, 12(4), 80-86
DOI: 10.12691/jgg-12-4-1
Open AccessArticle

Lineament and Lithological Mapping of Meta-Sediments and Granitoids of Goz-Beïda (Eastern Chad) Based on Semi-Automatic Processing of Landsat 8 Oli/Tirs Images

Félix Nenadji Djerossem1, , Ngarbagne Rirabé1, Gustave Ronang Baïssemia2, Moussa Ngarena Klamadji2 and Malik Hisseine Malik3, 4

1Department of Mining, New and Renewable Energies. National Higher Institute of the Sahara and Sahel, Iriba, Chad

2Department of Mining and Geological Engineering, Faculty of Life and Earth Sciences, Pala University, P.O. Box. 20, Pala, Chad

3Laboratory of Geosciences, Natural Resources and Environment, University of Douala, BP: 44155, Douala, Cameroon

4Department of Geological Engineering, Polytechnic University of Mongo, Chad

Pub. Date: October 27, 2024

Cite this paper:
Félix Nenadji Djerossem, Ngarbagne Rirabé, Gustave Ronang Baïssemia, Moussa Ngarena Klamadji and Malik Hisseine Malik. Lineament and Lithological Mapping of Meta-Sediments and Granitoids of Goz-Beïda (Eastern Chad) Based on Semi-Automatic Processing of Landsat 8 Oli/Tirs Images. Journal of Geosciences and Geomatics. 2024; 12(4):80-86. doi: 10.12691/jgg-12-4-1

Abstract

Using Lansat-8 OLI/TIR image combined with field and pre-existing data permit us to create lineament and lithological map of Goz-Beïda area. The PCA images were subjected to Sobel directional filters using the semi-automatic extraction method to discriminate lineaments. By combining the 7/5/1 bands in RGB mode, the PCA images (PCA1, PCA2, PCA3) in RGB mode and the ratio bands 7/5, 4/5, 1/7 are used to discriminate the lithological types. The results show that the main lineaments are characterized by NE-SW and NNE-SSW directions. The N-S, ENE-WSW and NW-SE directions correspond to mean directions. Several lithological types are discriminated: two-mica quartzite, metapelite, pyroxene monzonite, biotite granite and two-mica leucogranite. The rocks types are partially covered by alluvial deposits.

Keywords:
Goz-Beïda Landsat8 OLI/TIR Lineament map Lithological map and Eastern Chad

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