DELINEATION OF LINEAMENTS IN THE REGION OF OUADDAI (CHAD) USING GRAVITY DATA

The gravity map of Ouaddai in the eastern region Chad exhibits important anomalies that are often delimitated by high gradients, resulting from density contrasts between various anomaly sources. This presumes an tectonic activity zone. Because its arid and desert nature, is water-poor or even lacking water resources. main source made very deep aquifers. analysis this study helps to better understand network faults area. Many complementary approaches data processing have been applied, namely horizontal gradient coupled upward downward continuation Euler method. Results filtring allowed highlighting directions (SSW-NNE S-N E-W, NE-SW) direction. In total, 37 major were detected with lengths including 11 (F6, F9, F10, F12, F17, F29, F31, F34, F35, F37) for a cumulative total length 353 km oriented towards Bongor basin 15 others (F1, F4, F7, F8, F11, F13, F18, F20, F23, F25, F26, F27, F28, F30, F33), 621 km, Doba basin. These paramount importance great potential impacts on regions hydrocarbon reservoirs. Thise results one hand confirmed some known previous investigations. other hand, identify new unknown signatures.