Tele-Analytical Characterization of the Eburnean Tectonic Structures within the Birimian Formations of Mako Area, Eastern Senegal

The tectonic structures of the Mako area in Kédougou-Kéniéba inlier (KKI) were mapped with tele-analytical investigation which is validated by field data. This study based on different images processing particular: 1) colored combinations (1 to 5) and panchromatic (8) thematic mapping bands Landsat-8 (ETM+) satellite; 2) Digital Elevation Model (DEM) image Space Shuttle Radar Topography Mission (SRTM); 3) airborne geophysics (aeromagnetic radiometric) images. In these images, four major directions lineaments NS, NNE-SSW, NW-SE EW would be related structures, have been identified mapped. Field data confirm structural show that most are faults, shear and/or thrust zones, or even basic rock dykes. N-S NE-SW oriented more frequent followed those oriented. These two generally correlation trajectories sinistral zones area. They associated S2a S2b schistosities relative D2 Eburnean deformation. often intersect E-W less sometimes folded crenulated. lineament prior S1 schistosity D1 phase At scale studied area, linear (shear zones) conjugated create a partitioning deformation through an anastomosed network mylonitic surround weakly deformed bodies. All post-Eburnean orogenic events this