Resume of the Geology of Nigeria

Ground Water Quality Assessment of Newly Created Local Governments in Nigeria – A Case of Nkwerre, Local Government, Imo State.

“…Ameki Formation which covers most of the surface area is Eocene in age (Reyment, 1965). The geology of Ameki Formation consist of a series of highly fossiliferous grayish-green sandy clay with calcareous white clays.…”

“…Materials (Iloeje, 1985 ) (Fig 1) with a population figure of about 2,35273 as at 2006 National Population census figure The drainage pattern is dendritic typical of sedimentary rock with uniform resistance and homogeneous geology (Reyment 1965 (Iloeje 1981) The physiography is dominated by a segment of northern, Southeastern trending Okigwe regional escarpment which stands at elevation of between 61m and 122m above sea level (Ofomata, 1985). Vegetation in the area is tropical rain forest which is prevalent in the Southern States of Nigeria (Oguntoyimbo, 1987).…”

Heavy Metal Contamination of Soil and Surface Water in the Arufu Lead-Zinc Mining District, Middle Benue Trough, Nigeria

“…It contains up to 5000 m thick of slight deformed Cretaceous sediments and volcanic rocks (Olade, 1975). Detailed geological mapping of the study area (Pargater, 1959;Reyment, 1965) shows that it is underlain dominantly by Cretaceous sediments comprising shales, sandstones, and limestone. The sediments are intruded by diorite and granites (Fig.…”

Identifying Dominant Runoff Processes at a Regional Scale – A GIS - Based Approach

“…The Ameki Group comprises of Nanka sand, Nsugbe and Ameki Formations. The Ameki Formation is an alternating sequence of shale, sandy shale, clayey sandstone and fine-grained fossiliferous sandstone with thin limestone bands (Oboh-Ikuenobe et al, 2005;Reyment, 1965). The Ogwashi-Asaba Formation comprises of alternating sequence of coarsegrained sandstone, lignite seams, and light coloured clays of continental origin (Oboh-Ikuenobe et al, 2005).…”

“…It is overlain by Mamu Formation consisting of shale, coal and sandy shale while Ajali Formation which overlie Mamu Formation is a thick friable poorly sorted white sandstone (Gideon et al, 2014;Reyment, 1965). Ajali Sandstone is overlain by Nsukka Formation which vary from coarse to medium grained sandstones at the base to a sequence of well-bedded blue clays, fine-grained sandstones and carbonaceous shale with limestone at the top while the overlying Imo Formation comprises of blue-grey clays, shale and black shales with bands of calcareous sandstone, marl and limestone (ObohIkuenobe et al, 2005).…”