Geology and Mineralogy of Batola and its Environs, Southwestern Nigeria

Abstract

The Basement complex and Sedimentary Basin Makes up the Geology of southwest Nigeria. This research work is intended to comprehend the geology and mineralogy of Batola, Ago, Ladele, Koroyi and Aregbe which falls within the Ikomu sheet in Southwest Nigeria. A highly detailed topographical map and a GPS gadget were used for navigation during the Field Mapping process. Fresh samples that were representative of each outcrop were taken in all locations throughout the Field Mapping process. The slides were then examined under a microscope in an effort to confirm the provisional names for the rocks in the field. This allowed for the determination of the lithology of the rocks in the research region as well as the petrography of these outcrops in both plane and cross polarised light. The lithology in the study area was identified by the Field and Petrographic results as Granite (Porphyritic and Coarse Grained), Granite-gneiss and Pegmatite. Additionally, Pegmatitic intrusions and dykes were also seen. Further minerals found during the Petrographic analysis of the rock units included Mica, Biotite, Plagioclase Feldspar, Microcline, Quartz and a few tiny opaque minerals.The geology and mineralogy suggested that the study area is heterogeneous in nature, with lithologies varying from igneous to metamorphic rocks with structural imprints that can be characterized to the Pan-African orogeny. This study provided additional support of previous researches carried out on the Geology of Southwestern rocks.