TITLE:
Evaluation of Neotectonic Signature Using Morphometric Indicators: Case Study in Nefza, North-West of Tunisia
AUTHORS:
Slimen Sedrette, Noamen Rebaï, Mohamed Mastere
KEYWORDS:
Morphometry, Hydrographic Network, DEM, Drainage Anomalies, Neotectonic, Nefza
JOURNAL NAME:
Journal of Geographic Information System,
Vol.8 No.3,
June
6,
2016
ABSTRACT: 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.