AUTOMATIC ETCHECOPAR MICROTECTONIC ANALYSIS OF THE DAJY SECTOR (AGADEZ REGION, NORTHERN NIGER)

This study, based on microtectonic analysis using Echecopars automatic method combined with field work in the Dajy sector, highlighted that the direction of minimum stress 3 is not homogeneous in this study area. It was thus highlighted : 1. An extensive tensors linked to a direction of 3 of approximately N90 ; 2. An extensive tensors linked to a subhorizontal 3 direction N120 E to N160 E, 3. An extensive tensors with Ϭ3 directions parallel or subparallel to the N70 E faults. This category of tensors appears to be associated with strike slip fault (Fig. 6). 4. And an average N156 extension for the Jurassic series.