A GIS Approach Using Morphometric Data Analysis for the Identification of Subsurface Recent Tectonic Activity. Case Study in Quaternary Outcrops—North West of Tunisia

The combination of structural and lithological data with morphometric indicators in a GIS environment constitutes methodological approach high added value to identify neotectonic deformations, particular the Quaternary outcrops where faults are generally masked by thick recent sediments. This approach, based on crossing multisource data, is used this work understand mechanisms that generate landscape forms outcrop Oued Lahmar, which belongs northwest Tunisia. In fact, databases various indicators, extracted from hydrographic network, have been generated using remote sensing open sources applications. database has enriched tectonic regional geological map, results analysis. obtained provide valuable information identification subsurface activity Lahmar large vicinity areas heterogeneous geomorphic characteristics. Indeed, study revealed existence an E-W control covered sedimentary series not indicated map region. direction, follows most magmatic edge region, may allow intrusion magma rejuvenation ancient deep faults.