January 2020

Anisotropic properties of the near-surface in South-Western Niger Delta: Implications on geotechnical constructions

The near-surface anisotropic properties within the South-Western Niger Delta were investigated to determine their impacts on geotechnical constructions. Uphole data analyses reveal a weathered layer that is thickest in the NW, E and SE with an average of 4.2 m and thinnest in the North-Central with a value of 3.8 m; a sub-weathered layer that is thickest in the NW and SW with an average of 32.1 m and thinnest in the SE...

Author(s): G. I. Alaminiokuma and J. I. Omigie  

January 2020

Applications of remote sensing and geographic information system (GIS) in regional lineament mapping and structural analysis in Ikare Area, Southwestern Nigeria

An attempt was made to use remote sensing technique to analyze some structural components of the metamorphic basement complex of the Ikare area in the SW Nigeria. Multiple data sets coupled with application of directional filtering techniques were used to extract linear features from Landsat ETM+ image with a view to improving on already produced regional structural map of the area and also determine a fast and cost...

Author(s): A. A. Oyawale, F. O. Adeoti, T. R. Ajayi and A. A. Omitogun  

February 2020

The geotechnical properties of the oolitic ironstone formation, Wadi Halfa, North Sudan

Wadi Halfa Oolitic Ironstone Formation (WHOIF) covers large areas around Wadi Halfa border town in Northern Sudan. The detrital framework grains of sandstone of WHOIF are composed of sub-angular to sub-rounded quartz grains followed by feldspars, lithic fragments, micas and heavy minerals. The dominant cementing materials are iron oxides, carbonate cement, and some clay minerals. Twelve block samples were carefully...

Author(s): Abazar M. A. Daoud, Rashed M. A., Elsharief A. M., Kadry N. Sediek and Elamein, A. M.