AERO-GRAVITY DATA ANALYSIS FOR DELINEATING POSSIBLE CHANNELS OF MINERALIZATION MIGRATION THROUGH LINEAMENT - A CASE STUDY SOUTHEASTERN NIGER DELTA, NIGERIA
DOI:
https://doi.org/10.60787/AASD-v2i1-35Keywords:
mineralization, Underground water, Hydrocarbon, LineamentsAbstract
The Bouguer anomaly map of the southeastern part of the Niger Delta region of Nigeria exhibits important anomalies that are often identified by high gradients resulting from density contrasts between various anomaly sources. This reveals an important tectonic activity in the area. The northeastern part of the area is characterized by lack of water resources, except within lineaments. The sources of water within this area are enhanced secondary porosity releasable from faults, fractures and voids. Two complimentary approaches involving Euler deconvolution and tilt angle derivatives were employed in mapping out lineament over the entire study area. Results from the data analysis reveal several lineaments networks, trending in various directions of NE-SW, NW-SE, ENE-WSW, NNE-SSW and N-S. Altogether, 82 major lineaments were mapped using the 3D Euler depth solution technique and 58 from
the tilt angle derivative technique. Total length of lineaments from 3D Euler deconvolution and tilt angle derivative within the study area are 225.8 km and 113.4 km respectively. These lineaments are of paramount importance with great potential impacts on hydrocarbon reservoirs and water flow in the area. Hence, these lineaments are recommended for further investigation as pathway for water and mineral resources.
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References
Akın, U. Şerifoğlu, B. &Duru, M. (2011). The use of
tilt angle in gravity and magnetic
methods. Bulletin of mineral research and
exploration. 143. 1-12.
Biswas A, Sharma S. P (2016). Integrated
geophysical studies to elicit the structure
associated with Uranium mineralization
around South Purulia Shear Zone, India: A
Review. Ore Geology Reviews. 72:1307-
Doust, H., and Omatsola, E., (1990). Niger Delta,
(in, Edwards, J. D., and Santogrossi, P.A.,
eds.,) Divergent/passive Margin Basins.
American Association of Petroleum
Geologists Memoir 48, pp. 239-248.
Ekwok, S. E., Akpan, A. E. & Kudamnya, E. A.,
(2020). Exploratory mapping of structures
controlling mineralization in Southeast
Nigeria using high resolution airborne
magnetic data. Journal of African Earth
Sciences, 162, 103700.
Ekwueme B.N, (1995) Geochemistry of crystalline
basement rocks on South West Uwet,
Nigeria. Dec. Ford. Journal of Pure and
Applied Science. 1, pp. 15-28.
Ekwueme B.W, (1994) Basaltic Magnetism related
to early stages of Benue Trough, the study
dolerites of smith Eastern Nigeria.
Geological Journal (29) pp. 269-276.
Evamy B. D, Harebourne J, Kamerling P, Knaap W.
A, Molloy F. A, Rowlands P. H (1978).
Hydocarbon habitat of Tertiary Niger
Delta. Bulletin of American Association of
Petroleum Geologists 62(1):1-39.
Expended Abstracts, no. D04
Ezekiel J. C, Onu NN, Akaolisa C. Z, Opara A. I
(2013). Preliminary Interpretation of
gravity mapping over the Njaba sub-basin
of Southeastern Nigeria. An implication to
petroleum potential. Journal of Geology
and Mining Research. 5(3):75-87.
Fatoke, OluwaseyiAdedamola (2010). Sequence
stratigraphy of the Pliocene leistocene
strata and shelf-margin deltas of the
eastern Niger Delta, Nigeria (Ph.D.).
University of Houston.
Grant, N.K. (1978). Structural distinction between a
metasedimentary cover and an underlying
basement in the 600m.y. old Pan African
domain of Northwestern Nigeria, West
Africa. Geological Society of American
Bulletin, 89, 50-58.
Hood P., (1965). Gradient measurements in
aeromagnetic surveying. Geophysics,
Volume 30, Issue 5, Pages: 705-932ISSN
(print):0016-8033ISSN (online):1942-2156
Iliya G. and Bassey N. E., (1993). Regional
magnetic study of Oban and Obudu
Precambrian massif, SE Nigeria. Journal
of Mining and Geology. 29(2): 100-110.
Lawson, C.L., Hanson, R.J. (1974). Solving Least
Squares Problems. Prentice-Hall,
Englewood Cliffs.
Lehner, P. and De Ruiter, P.A.C. (1977). Structural
history of Atlantic margin of Africa.
American Association of Petroleum
Geologists Bulletin,61: 961-981.
Liégeois, J. P., Abdelsalam, M., Ennih, N. and
Ouabadi, A. (2013). Metacraton: Nature,
genesis and behavior. Gondwana
Research. 23. 220-237.
1016/j.gr.2012.02.016.
Merki, P. I (1972). Structural Geology of the
Cenozoic Niger Delta. African Geology,
University of Ibadan Press, pp. 251-260.
Murphy, B. S. (2007). Airborne Geophysics and the
Indian scenario. Journal of Indian
Geophysical Union, 11(1): 1-28.
Odek, A., Otieno, A. B., Ambusso, W. J. and Githiri,
J. G., (2014). 2d-Euler deconvolution and
forward modeling of gravity data of
homa-hills geothermal prospect, kenya.
Journal of Agriculture, Science and
Technology, Vol. 15(1)
Okiwelu A. A, ofrey-Kulo O, Ude I. A (2013).
Interpretation of regional magnetic data
offshore Niger Delta reveals relationship
between deep basement architecture and
hydrocarbon target. Earth Science
Research, 2(1):13-32.
Onyeagocha A. C. and Ekwueme B. N. (1983).
Temperature-pressure distribution
patterns in metamorphosed rock
basement of the Nigerian Basement
complex- a preliminary analysis. Journal of
African Earth Science, Volume 11, Issues 1-
, pages 83-93.
Reid, A. B., Allsop, J. M., Granser, H., Millett, A. J.,
Somerton, I. W., (1990). Magnetic
interpretation in three dimensions using
Euler Deconvolution. Geophysics, vol. 55,
–90.
Salem, A., Williams, S., Fairhead, D., Smith, R.,
Ravat, D., (2008). Interpretation of
magnetic data using tilt angle derivatives.
Geophysics vol. 73, L1–L9.
Thompson, D.T. (1982). EULDPH-A New Technique
for Making Computer Estimates from
Magnetic Data. Geophysics, vol. 47:31-37.
Tuttle, M., Charpentier, R., and Brownfield, M.,
(2015). "The Niger Delta Petroleum
System: Niger Delta Province, Nigeria,
Cameroon, and Equatorial Guinea, Africa".
United States Geologic Survey. Retrieved 6
March 2015.
Zhang C, Mushayandebvu, M. F., Reid A. B.,
Fairhead J. D. and Odegard M. E. (2000).
Euler De-convolution of Gravity Tensor
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