0

BOOKMARKS

2

READ

409

DOWNLOADS

342

VIEWS

0

REVIEWS

ENGLISH

ENGLISH

Interpretation of Aeromagnetic Data Over Ankpa and Nsukka Areas of Lower Benue Trough Nigeria

By Coal City University

Summary

The aeromagnetic data of Ankpa and Nsukka areas have been interpreted qualitatively and
quantitatively. The total magnetic intensity and residual intensity field showed range of magnetic anomalies
which revel that the study area is magnetically heterogeneous. The Horizontal derivative showed the occurrence
of subsurface liner structure which could be the presence of faults in the study area. Oasis Montaj, Microsoft
and surfer 10 software were employed in the data analysis. This research work is based on high resolution of
aeromagnetic data interpretation of Ankpa and Nsukka using Spectral Analysis, Source Parameter Imaging,
Euler Deconvolution, forward and inverse modelling in order to obtain the residual magnetic data, estimate the
depth to basement and determine the feasibility for hydrocarbon potential in the area, determine the magnetic
susceptibility and possible solid minerals in the area. The result from spectral analysis shows that the depth to
the magnetically deep source ranges from 2.4 to 6.6km with an overall depth of 3.953km while the depth to the
shallow source ranges from 0.66 to 1.7km with overall average depth of 0.979km.The depth result from SPI
ranges from -367.9m(shallow magnetic bodies) to -6412.7m(deep lying magnetic bodies).The depths of the
magnetic source bodies estimated from Euler deconvolution for the three different structural index(SI=0,1 and 2
ranges from 1036.4m(out cropping magnetic bodies) to -7613.0m(deep lying magnetic bodies).The estimated
depths from the forward and inverse modelling method are 522,1289,5766,710 and 1828m for profiles 1-5 with
susceptibility values of 0.0146,0.0045,0.0200,0.0001 and 0.0240 SL respectively which indicate dominance of
minerals like shale, pyrite, sandstone, dolomite and limestone
Interpretation of Aeromagnetic Data Over Ankpa and Nsukka Areas of Lower Benue Trough Nigeria
 
0.0 (0 reviews)

Published: December 5, 2017

Uploaded by: Coal City University

Read Online

Your download will begin automatically, if it's taking too long click here

Share this entry

Abstract

The aeromagnetic data of Ankpa and Nsukka areas have been interpreted qualitatively and
quantitatively. The total magnetic intensity and residual intensity field showed range of magnetic anomalies
which revel that the study area is magnetically heterogeneous. The Horizontal derivative showed the occurrence
of subsurface liner structure which could be the presence of faults in the study area. Oasis Montaj, Microsoft
and surfer 10 software were employed in the data analysis. This research work is based on high resolution of
aeromagnetic data interpretation of Ankpa and Nsukka using Spectral Analysis, Source Parameter Imaging,
Euler Deconvolution, forward and inverse modelling in order to obtain the residual magnetic data, estimate the
depth to basement and determine the feasibility for hydrocarbon potential in the area, determine the magnetic
susceptibility and possible solid minerals in the area. The result from spectral analysis shows that the depth to
the magnetically deep source ranges from 2.4 to 6.6km with an overall depth of 3.953km while the depth to the
shallow source ranges from 0.66 to 1.7km with overall average depth of 0.979km.The depth result from SPI
ranges from -367.9m(shallow magnetic bodies) to -6412.7m(deep lying magnetic bodies).The depths of the
magnetic source bodies estimated from Euler deconvolution for the three different structural index(SI=0,1 and 2
ranges from 1036.4m(out cropping magnetic bodies) to -7613.0m(deep lying magnetic bodies).The estimated
depths from the forward and inverse modelling method are 522,1289,5766,710 and 1828m for profiles 1-5 with
susceptibility values of 0.0146,0.0045,0.0200,0.0001 and 0.0240 SL respectively which indicate dominance of
minerals like shale, pyrite, sandstone, dolomite and limestone.

About the Author

Coal City University

Coal City University

Reviews

No reviews yet.

Add Review