Structural geology and tectonic influence on lineament density and slope variation in Southern Ebonyi, Nigeria: An ArcGIS Approach

Charity Nkiru Nwokeabia *, Benard Ifeanyi Odoh and Callista Nwanneka Igwebudu

Department of Geophysics, Faculty of Physical Sciences, Nnamdi Azikiwe University Awka, Nigeria.
 
Research Article
International Journal of Science and Research Archive, 2024, 13(01), 583–594.
Article DOI: 10.30574/ijsra.2024.13.1.1657
Publication history: 
Received on 03 August 2024; revised on 11 September 2024; accepted on 13 September 2024
 
Abstract: 
This study investigates the structural geology and tectonic influences on lineament density and slope variation in Southern Ebonyi, Nigeria, using ArcGIS. The research aims to analyze the spatial distribution and density of lineaments and their correlation with slope variations to understand the region's geomorphology. Slope data was categorized into five classes, revealing that the majority of the area exhibits gentle slopes, indicative of tectonic stability. Conversely, regions with steeper slopes suggest localized tectonic activity. The analysis of lineament density identified areas with varying tectonic influences, with most of the study area showing low-density lineaments, suggesting relative tectonic stability. High-density lineament zones correspond to regions of significant tectonic deformation, often aligning with steeper slopes. The study concludes that the geomorphology of Southern Ebonyi is predominantly shaped by long-term erosional processes and localized tectonic activities. The novelty of this research lies in its comprehensive spatial analysis of both slope variation and lineament density, providing new insights into the tectonic and structural dynamics of the region.
 
Keywords: 
Fault systems; Geomorphology; Lithological units; Structural deformation; Tectonic stability
 
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