Tele-Analytical Characterization of the Eburnean Tectonic Structures within the Birimian Formations of Mako Area, Eastern Senegal
Tele-Analytical Characterization of the Eburnean Tectonic Structures within the Birimian Formations of Mako Area, Eastern Senegal作者机构：Department of Geology School of Science and Technology Sheikh Anta Diop University Dakar Senegal Géosciences Rennes UMR 6118 CNRS Université de Rennes 1 Campus de Beaulieu Rennes France
出 版 物：《International Journal of Geosciences》 (地球科学国际期刊（英文）)
年 卷 期：2022年第13卷第1期
页 面：12-32页
学科分类：070904[理学-构造地质学] 0709[理学-地质学] 07[理学]
主 题：Eburnean Kédougou Tele-Analytic Landsat-8 Images Tectonic Lineament
摘 要：The tectonic structures of the Mako area in the Kédougou-Kéniéba inlier (KKI) were mapped with tele-analytical investigation which is validated by field data. This study is based on different images processing in particular: 1) the colored combinations (1 to 5) and panchromatic (8) thematic mapping bands of the Landsat-8 (ETM+) satellite;2) Digital Elevation Model (DEM) image of Space Shuttle Radar Topography Mission (SRTM);3) airborne geophysics (aeromagnetic and radiometric) images. In these images, four major directions of lineaments NS, NNE-SSW, NW-SE and EW would be related to the tectonic structures, have been identified and mapped. Field data confirm these four structural directions and show that most of these lineaments are related to faults, shear and/or thrust zones, or even basic rock dykes. N-S to NE-SW oriented lineaments are more frequent followed by those NW-SE oriented. These two directions of lineaments are generally in correlation with trajectories of major sinistral shear zones in the Mako area. They would be associated with the S2a and S2b schistosities relative to the D2 Eburnean major deformation. They often intersect the E-W oriented lineaments which are less frequent and sometimes folded and crenulated. This E-W oriented lineaspan style=font-fami
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