Structural Mapping Inferred from Gravity Data to Image the Upper Lithospheric Structures and its Hydrocarbon Implication from Gwandu Formation NW, Nigeria
DOI:
https://doi.org/10.52562/injoes.v2i1.346Keywords:
Enhancement filtering techniques, Gwandu formation, Structural mapping, Satellite gravity data, Sokoto BasinAbstract
Presently a digitized composite satellite gravity data covering the Gwandu formation in Sokoto Basin were acquired and processed with a view to interpret the Bouguer anomalies as well to equally image the upper lithospheric structures beneath the Study area and its environs. The research work was aim to study the structural settings of crustal movement in the Gwandu formation. A least-square fitting polynomial surface of a third-degree order was applied in separating regional and residual gravity components from the Bouguer anomaly. The attributed low gravity sedimentary infill from the residual anomalies were tectonically trends NE -to- SW about the vicinities of Tambuwal, Goronyo, Gada and Argungu, Kolmalo and about Yauri, Koko and Jega, Kamba as well as Bagudo. Data enhancement techniques such as first vertical derivative, total horizontal derivative (THDR), analytic signal, spectral depth analysis, and the standard Euler deconvolution (SED) were applied to enhance deep-seated structures. Results from the Spectral Analysis revealed that the average thickness of the sediments varies from 1.679 km to 4.181 km, outsized enough for hydrocarbon prospect. The derivative maps revealed parallel to sub-parallel trending NW –to- SE, E -to- W fracture zones within the sedimentary infill underlying the study area, coinciding with the cretaceous zones. Hence, the identified lineaments (faults or lithologic contacts) and structures in the area can be attributed to the tectonic setting of the area and probable migratory routes for hydrocarbon migration. More detailed ground gravity and seismic studies may lead to discoveries of structural or stratigraphic traps.
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Adamu, A., Likkason, O. K. (2022). Exploring the Application of potential field Gravity Method in characterizing regional-trends of the Earth’s sequence system over the Sokoto Basin, Northwestern Nigeria “in Earth Crust and its evolution from Pangea to the present continents. IntechOpen Ltd, DOI: http://doi.org/10.5772/intechopen.102940
Adamu, A., Likkason, O. K., Maigari, A. S., and Ali, S. (2021). Structural mapping insight from Gravity data for hydrocarbon accumulation in some parts of the Sokoto Basin, Northwestern Nigeria, in 7th Assembly of Arab Conference on Astronomy and Geophysics (ACAG-7) Institute for Astronomy and Geophysics (NRIAG).
Askari, A. (2014). Edge detection of gravity anomaly sources via the tilt angle, total horizontal derivative, total horizontal derivative of the tilt angle and new normalized total horizontal derivative. Scholars J. Eng. Technol 2(6B), 842-846.
Balmino, G., Vales, N., Bonvalot, S., Briasis, A. (2011). Spherical harmonic modelling to ultra-high degree of Bouguer and isostatic anomalies. J. Geodes. 86, 499-520. http://dx.doi.org/10.1007/s00190-011-0533-4
Fitz-Gerald, D., Reid, A., and McInerneya, P. (2004). New discrimination techniques for Euler deconvolution. Computers & Geosciences, 30: 461-469. https://doi.org/10.1016/j.cageo.2004.03.006
Gluyas, J., and Swarbrick, R. (2005). Petroleum Geoscience. Oxford: Blackwell Science.
Gunn, P. J., FitzGerald, D., & Yassi, N. (1997). Complex attributes: new tools for enhancing aeromagnetic data. Aust Geol Surv Organ Res, 25, 16-17.
Hinze, W. J., Von Frese, R. R., Von Frese, R., & Saad, A. H. (2013). Gravity and magnetic exploration: Principles, practices, and applications. Cambridge University Press.
Ismail, A. M., Sultan, S. A., and Mohamady, M. M. (2001). Bouguer and Total Magnetic Intensity maps of Sinai Peninsula, Scale 1: 500,000. In: Proc. 2nd International Symposium on Geophysics, Tanta, pp. 111–117.
Jacobsen, B. H. (1987). A case for upward continuation as a standard separation filter for potential-field maps. Geophysics, 52(8), 1138-1148. https://doi.org/10.1190/1.1442378
Kebede, H., Alemu, A., and Fisseha, S. (2020). Upward continuation and polynomial trend analysis as a gravity data decomposition, case study at ziway-shala basin, central main Ethiopian rift. Heliyon 6(1), e03292. https://doi.org/10.1016/j.heliyon.2020.e03292
Keary, P. and Vine, F. J. (1990). Global Tectonics. Blackwell Scientific Publications, pp.36-37.
Kogbe, C. A. (1972). Geology of the Upper Cretaceous and Lower Tertiary sediments of the Nigerian Sector of the Iullemmeden Basin (West Africa), Geologische Rundschau. 62(1), 197-211. https://doi.org/10.1007/BF01826827
Kogbe, C. A. (1976). Geology of Nigeria. Elizabethan publishing company.
Kogbe, C. A. (1979). Geology of southeastern portion of the Iullemmeden Basin (Sokoto Basin), Bull. Dept. Geology, Ahmadu Bello University, Zaria, Nigeria, 2, 420p.
Kogbe, C. A. (1981). Cretaceous and Tertiary of the Iullemmeden Basin in Nigeria (West Africa), Cretaceous Research 2(2), 129 – 186. https://doi.org/10.1016/0195-6671(81)90007-0
Linsser, H. (1967). Investigation of Tectonics by Gravity DETAILING. Geophysical Prospecting, 15(3), 480-515. https://doi.org/10.1111/j.1365-2478.1967.tb01800.x
Mammo, T. (2004). Mapping the crustal-mantle boundary beneath the Afar Depression. Gondwana Research, 7(3), 855-861. https://doi.org/10.1016/S1342-937X(05)71069-8
Mammo, T. (2010). Delineation of sub-basalt sedimentary basins in hydrocarbon exploration in North Ethiopia. Marine and petroleum geology, 27(4), 895-908. https://doi.org/10.1016/j.marpetgeo.2009.12.009
Mickus, K. L., Aiken, C. L., & Kennedy, W. D. (1991). Regional-residual gravity anomaly separation using the minimum-curvature technique. Geophysics, 56(2), 279-283. https://doi.org/10.1190/1.1443041
Moumouni, A., Hamza, H., & Mijinyawa, A. (2016). Stratigraphic Review of the Creataceous Tertiary Deposits of the Iullemmeden Basin in Niger and Nigeria. Asian Journal of Applied Sciences, 4(2).
Nabighian, M. N. (1972). The analytic signal of two-dimensional magnetic bodies with polygonal cross-section: its properties and use for automated anomaly interpretation. Geophysics, 37(3), 507-517. https://doi.org/10.1190/1.1440276
Nabighian, M. N. (1984). Towards a three-dimensional automatic interpretation of potential field data via generalised Gilbert transforms: Fundamental relations. Geophysics, 49(6),780–789. https://doi.org/10.1190/1.1441706
Naidu, P. S. (1968). Spectrum of potential field due to randomly distributed sources. Geophysics 33(2), 337–345. https://doi.org/10.1190/1.1439933
Nettleton, L. L. (1976).Gravity and magnetic in oil prospecting. New York: McGraw-Hill.
Oasis Montaj Program v.8.4, 2015. Geosoft mapping and processing system, version 8.4, 2015.
Obaje, N. G., Faruq, U.Z., Bomai, A., Moses, S.D., Ali, M., Adamu, S., Essien, A., Lamorde, U., Umar, M.U., Ozoji, T., Okonkwo, P., Adamu, L., and Nda, I.A. (2020). A Short Note on the Petroleum Potential of the Sokoto Basin in Northwestern Nigeria. Petroleum Science and Engineering. 4(1), 34-38. https://doi.org/10.11648/j.pse.20200401.14
Obaje, N.G. (2009). The Benue Trough Geology and Mineral Resources of Nigeria. Springer, Dordrecht Heidelberg, New York, London P.57 ISBN 3-540-92684-4.
Obaje, N. G., Wehner, H., Abubakar, M. B., & Isah, M. T. (2004). Nasara?I well, Gongola Basin (Upper Benue Trough, Nigeria): Source?rock evaluation. Journal of Petroleum Geology, 27(2), 191-206. https://doi.org/10.1111/j.1747-5457.2004.tb00053.x
Olawale, O. O., Moroffdeen, A. A., and Oluwatoyin, A. A. (2020). Structural Interpretation and Depth Estimation from Aeromagnetic Data of Abigi-Ibebu-waterside area of Eastern Dahomey Basin, Southwestern Nigeria. Geofisica Internacional, 58(4), 29-37.
Petters, S. W., and Ekweozor, C. M. (1982). Petroleum geology of Benue Trough and southern Chad Basin Nigeria. AAPG Bull, 66, 1141–1149.
Phillips, J. D., Hansen, R. O., & Blakely, R. J. (2007). The use of curvature in potential-field interpretation. Exploration Geophysics, 38(2), 111-119. https://doi.org/10.1071/EG07014
Reid, A. B. (2003). Euler magnetic structural index of a thin-bed fault. Geophysics, 68(4), 1255-1256. https://doi.org/10.1190/1.1598117
Reid, A. B., Allsop, J. M., Granser, H., Millett, A. T., & Somerton, I. W. (1990). Magnetic interpretation in three dimensions using Euler deconvolution. Geophysics, 55(1), 80-91. https://doi.org/10.1190/1.1442774
Reid, A.B., FitzGerald, D. J., and McInerney, P. (2003). Euler deconvolution of gravity data. SEG Annual Meeting, Dallas, accepted for presentation.
Roest, W. R., Verhoef, J., & Pilkington, M. (1992). Magnetic interpretation using the 3-D analytic signal. Geophysics, 57(1), 116-125. https://doi.org/10.1190/1.1443174
Spector, A., & Grant, F. S. (1970). Statistical models for interpreting aeromagnetic data. Geophysics, 35(2), 293-302. https://doi.org/10.1190/1.1440092
Stavrev, P. Y. (1997). Euler deconvolution using differential similarity transformations of gravity or magnetic anomalies. Geophysical Prospecting, 45(2), 207-246. https://doi.org/10.1046/j.1365-2478.1997.00331.x
Ugbor, C. C., Arinze, I. J., & Emedo, C. O. (2020). Analysis of aeromagnetic data of Ikwo and environs, southeastern Nigeria: a mineral and hydrocarbon exploration guide. Natural Resources Research, 29(5), 2915-2932. https://doi.org/10.1007/s11053-020-09633-3
Tadjou, J. M., Nouayou, R., Kamguia, J., Kande, H. L., & Manguelle-Dicoum, E. (2009). GRAVITY ANALYSIS OF THE BOUNDARY BETWEEN THE CONGO GRATON AND THE PAN-AFRICAL BELT OF CAMEROON. Austrian Journal of Earth Sciences, 102(1).
Tiberi, C., Ebinger, C., Ballu, V., Stuart, G., & Oluma, B. (2005). Inverse models of gravity data from the Red Sea-Aden-East African rifts triple junction zone. Geophysical Journal International, 163(2), 775-787. https://doi.org/10.1111/j.1365-246X.2005.02736.x
Topex.ucsd.edu, Extract topography or gravity data from global 1 – minute grids in ASCII XYZ-format.
Tselentis, G., Drakopoulos, J., Dimitriadias, K. (1988). A spectral approach to Moho depths estimation from gravity measurements in Epirus (New Greece). J. Phys. Earth, 36, 255-266. https://doi.org/10.4294/jpe1952.36.255
Thompson, D. T. (1982). EULDPH: A new technique for making computer-assisted depth estimates from magnetic data. Geophysics, 47(1), 31-37. https://doi.org/10.1190/1.1441278
Thurston, J. B., and Smith, R. S. (1997). Automatic conversion of magnetic data to depth, dip, and susceptibility contrast using the SPI method. Geophysics, 62(3), 807–813. https://doi.org/10.1190/1.1444190
Zahra, H. S., & Oweis, H. T. (2016). Application of high-pass filtering techniques on gravity and magnetic data of the eastern Qattara Depression area, Western Desert, Egypt. NRIAG Journal of Astronomy and Geophysics, 5(1), 106-123. https://doi.org/10.1016/j.nrjag.2016.01.005
Zelalem, D., Kevin, M., David, B., Mohammed, G.A., and Estella, A. (2018). Upper lithospheric structure of the dobi graben, Afar Depression from magnetic and gravity data. J. African Earth Sciences, 147, 136-151. https://doi.org/10.1016/j.afrearsci.2018.06.012
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