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Integration of remote sensing and geophysical methods for structural and lithological mapping in a part of Precambrian Basement Rocks, northern Nigeria


S. Olatunji

Abstract

Landsat 8 OLI data, Aeromagnetic data, and Radial Vertical Electrical Sounding (RVES) survey data were integrated to map lithology, delineate structures  and their trends, and delineate possible mineralized zones in the area. Landsat 8 OLI data yielded a color composite image, and surface lineaments map  of the area. The aeromagnetic maps were utilized to map lithology, and subsurface structures. A radial survey confirmed the fractures derived from the  structural maps. Results classified the area into three geological units viz: migmatite, banded gneiss, and quartzite. The banded gneiss is the most  deformed and contains series of structures that are significant for mineral and groundwater explorations. Clay alteration is the most dominant in the  area, followed by iron oxide alterations. Lineament alignments are N-S, NNW-SSE, NNE-SSW, NE-SW, and E-W directions.


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print ISSN: 1112-9867