Structural Interpretations Inferred from a High Resolution Aeromagnetic (HRAM) Data over Parts of Onshore Niger Delta, Nigeria
Bello Rasaq,
Ofoha Chimezie Charles
Issue:
Volume 4, Issue 3, June 2017
Pages:
23-31
Received:
3 June 2017
Accepted:
29 June 2017
Published:
15 August 2017
Abstract: Aeromagnetic data acquired by the Nigerian Geological Survey Agency (NGSA) and which covers about 3025 square kilometer of some parts of onshore Niger Delta, Nigeria, was processed and interpreted with the purpose of highlighting the structural lineaments with their corresponding trend patterns and then inferring the effect of the structures as it relates to the hydrocarbon potential and tectonic history of the area using the qualitative approach. Using polynomial fitting of degree two (2), regional - residual separation was carried out on the Composite Total Magnetic Intensity (CTMI) map, lying geographically within longitude 6°30'E-7°0'0''E and latitude 4°30'N-5°0'0'', and this generated the regional and residual maps. Some enhancement techniques applied upon the residual map gave rise to some directional gradient maps that depicted structural lineaments trending in the E - W, NE - SW, NW - SE and N - S directions. These lineaments influence the tectonics of the area and as such created faults and fractures that fostered the migration and entrapment of hydrocarbon, and perhaps mineral, within the area under review.
Abstract: Aeromagnetic data acquired by the Nigerian Geological Survey Agency (NGSA) and which covers about 3025 square kilometer of some parts of onshore Niger Delta, Nigeria, was processed and interpreted with the purpose of highlighting the structural lineaments with their corresponding trend patterns and then inferring the effect of the structures as it ...
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Technological Regimes Searching the Effect of Thermal Annealing on Optical and Electrical Properties of Co/ZnO Multilayer Thin Film of Different Thickness
Mohammad Faruk Hossain,
Mohammad Shahidullah Kayser,
Mohammad Sarwar Pervez,
Mohammad Ariful Islam Nahid
Issue:
Volume 4, Issue 3, June 2017
Pages:
32-35
Received:
27 July 2017
Accepted:
17 August 2017
Published:
18 September 2017
Abstract: The fabrication of the Co/ZnO multilayer thin film for studying the influence of thermal annealing on optical and electrical properties is presented in this paper. In this case, at first Co/ZnO multilayer films were prepared by e-beam evaporation in a vacuum at a pressure of 3.2×10-5 torr. In the multilayer, the thickness of Co and ZnO was kept same. Each layer thickness was varied from 5 nm to 15 nm and repeated three times. The deposition rate of the Co and ZnO thin films are about 1.33 nm/s & 1.43 nm/s respectively. The optical and electrical properties of the deposited and annealed Co/ZnO films had been studied. The average transparency of Co/ZnO multilayer thin film is roughly about 55% and decreased with increasing film thickness and increased when annealed. The T. C. R. of deposited and annealed Co/ZnO multilayer thin films in all cases is negative which indicates that the thin films are semiconducting in nature.
Abstract: The fabrication of the Co/ZnO multilayer thin film for studying the influence of thermal annealing on optical and electrical properties is presented in this paper. In this case, at first Co/ZnO multilayer films were prepared by e-beam evaporation in a vacuum at a pressure of 3.2×10-5 torr. In the multilayer, the thickness of Co and ZnO was ke...
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