Author(s)

Slimen Sedrette¹, Noamen Rebaï², Mohamed Mastere³

¹Department of Geology, El Manar University, El Manar, Tunisia.
²Department of Civil Engineering, El Manar University, El Manar, Tunisia.
³National Institute for Urban and Territorial Planning (INAU), Laboratory of Geomatic, Rabat, Morocco.

Neotectonic activity can be deduced from stream network patterns and as an outcome of its evolution. The objective of this study is to investigate the use of the stream network morphology and morphometric methods to assess neotectonic signatures in Nefza region situated in North-West of Tunisia. For this aim, a Digital Elevation Model (DEM), hydrographic layers extracted from Nefza topographic map (1/25,000), lithology and tectonic lineament parameters extracted from the geologic map (1/50,000) were used. The objective of this paper is to map structural and lithological discontinuities of the study area, by the morphostructural analysis of the topography extracted of DEM as well as the drainage anomalies. This work allowed the characterization of discontinuities of lithologic and structural origin. The previously conducted studies in the study area, confirm that is crossed by lineaments at several directions E-W, N-S, NE-SW and NW-SE. Based on the results obtained from this study regarding the correlation between tectonic and hydrographic network, we can highlight a regional rejuvenation tendency of the most mapped lineaments.

Morphometry, Hydrographic Network, DEM, Drainage Anomalies, Neotectonic, Nefza

Sedrette, S. , Rebaï, N. and Mastere, M. (2016) Evaluation of Neotectonic Signature Using Morphometric Indicators: Case Study in Nefza, North-West of Tunisia. Journal of Geographic Information System, 8, 338-350. doi: 10.4236/jgis.2016.83029.