Savanna Journal of Basic and Applied Sciences 3(1):60-66
Delineation of Potential Mineral Zones from Aeromagnetic Data over Eastern Part of Zamfara
Augie, A.I. and Ridwan, M.M.

In this study, acquired aeromagnetic data was used to delineate structures that may host minerals over the eastern part of Zamfara State. The acquired aeromagnetic data were analysed, processed and interpreted using the following techniques; IGRF/DGRF computation, reduction to magnetic equator (RTE), geologic contact (GC), centre for exploration targeting (CET) and source parameter imaging (SPI). The result from these techniques revealed the presence of granite, migmatite, biotite, gneiss, diorite, medium coarse grained quartz-mica schist and biotite- homblende granite as compared with geology of the area. Magnetic anomalous zones identified in these area were associated with the Fe-bearing mineral and sediments with widest variation in Fe-content that form various silicate and oxide mineral species which may probably formed during the formation of both intrusive and extrusive igneous rocks. These regions also have revealed the lineaments that were trending in South-East of the study area within the Birnin Magaji/Kiyawa, eastern part of Bungudu, southern part of Gusau, NE part of Tsafe and western part of Faskari. These structures were associated with hydrothermal solutions of the host rocks that may form mineral and the types of rocks/or structures within the zones play an important role in solid minerals exploration. The structures highlighted within the area have agree well with the results found in geologic contact as well as geological setting of the study area. Estimated depth of shear/faults/structural trends associated with the study area were found to be; 100 m to 185 m and 185.1 m to 250 m.