Journal of Geology & Geophysics

Journal of Geology & Geophysics
Open Access

ISSN: 2381-8719

+44 1478 350008

2-D electrical resistivity survey for cassiterite exploration in parts of Naraguta Area, Nigeria


International Conference on Geosciences and Geophysics

October 06-07, 2016 Orlando, USA

Agbodike Ifeanyi Ikechukwu Chukwuemeka

Imo State University, Nigeria

Posters & Accepted Abstracts: J Geol Geophys

Abstract :

Tomography is an imaging technique that makes use of an energy source to probe the subsurface and produce a tomogram which represents a model of the geologic structure that exists below the subsurface. The principles of tomography initially were applied in the medical field and in recent times applied in global and exploration geophysics. The Oru area has no baseline information on the velocity and thickness of the weathered zone in this area. A survey was therefore carried out to obtain these parameters. Measurements were made along a total of 10 profiles evenly distributed within the area. The receivers were placed at 10 m interval; an offset distance of 30 m on both sides of the profile was used. A 10 kg sledge hammer was used to produce the seismic signals while Mark 6 digital 12-channel seismograph was used to record the seismic signals and traces. The Reflexw software was used to process the raw data, while GPS was used to obtain the co-ordinates of the profiles. This research work has established that the distribution of p-wave velocity within the subsurface of this area shows a general increase of velocity with depth and the velocity varying from 400 m/s to 770 m/s. The thickness of this weathered layer was on the average 20.4 m. From these results, the lithology of the area was projected and regions with underground water were delineated. Another parameter calculated from these results was the geological age in years of the weathered layer which is in the order of 105 years.

Biography :

Email: ifygift_2009@yahoo.com

Top