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A Comparative Geophysical Study of the Sedimentary-Metamorphic Contacts in the Douala and Kribi-Campo Sub-Basins of Cameroon

by Njingti Nfor, Owona Angue Marie Louise Clotilde, Kue Petou Rokis Malquaire, Manguelle-Dicoum Eliezer, Lando Tsakou Julyo Achille and Piameu Kwagag J?el

Trends Journal of Sciences Research 2018, 3(1), 33-51. http://doi.org/10.31586/Geosciences.0301.05

Received: June 1, 2018 Revised: July 12, 2018 Accepted: July 25, 2018 Published: July 26, 2018

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Keywords: Resistivity, Sedimentary, Metamorphic, Contact, Telluric, Tectonic

Abstract

The magnetotelluric method has been used in this work to compare the nature of the sedimentary-metamorphic contacts of the Douala and Kribi-Campo sub-basins in Cameroon. The results show that the sedimentary-metamorphic contact zones for the two sub-basins, marked by a subsidence of the low resistivity materials on the sedimentary formations
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The magnetotelluric method has been used in this work to compare the nature of the sedimentary-metamorphic contacts of the Douala and Kribi-Campo sub-basins in Cameroon. The results show that the sedimentary-metamorphic contact zones for the two sub-basins, marked by a subsidence of the low resistivity materials on the sedimentary formations and uplift of the high resistivity materials characterized by intrusive bodies of higher values of resistivity on the metamorphic formations, are structurally similar,. However, the very low values of resistivity of rocks in the Douala sub-basin is suggestive of high porosity, permeability and high level of saline ions dissociation leading to high conductivity. These rocks should be of unconsolidated sediments for the sedimentary formation and gneiss for the metamorphic formation. On the contrary, the very high values of resistivity for rocks in the Kribi-Campo sub-basin indicate the absence of free mobile electrons and ions and low porosity, permeability and non-conductivity. The sedimentary formation of this sub-basin should be composed of limestone and conglomerates rocks with some gneissic and unconsolidated granitic materials. The rocks in the metamorphic formation should be completely granitic in nature. The shallow depth of penetration of only 4 km of telluric current in the Douala sub-basin is enough evidence that the tectonic events responsible for the emplacement of this contact zone were limited to the earth crust. On the other hand, in the Kribi-Campo sub-basin the tectonic events should have originated from within the earth mantle as the depth of penetration of telluric current attains 150 km. Full article

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References

[1]
Brownfield Michael, E., and Charpentier Ronald R. (2006). Geology and Total Petroleum Systems of the West-Central Coastal Province (7203), West Africa. U.S. Geological Survey Bulletin 2207-B, Reston, Virginia: 2006
[2]
Edwards, Alan, and Bignell Roger, (1988). Hydrocarbon potential of W. African salt basin: Oil and Gas Journal, v. 86, no. 50,71?74.
[3]
SNH, (2015). Blocks on offer in the Rio Del Rey, Douala/Kribi-Campo and Mamfe basins.
[4]
Clifford, A. C. (1986). African oil?past, present, and future, in Halbouty, M.T., ed., Future petroleum provinces of the world: American Association of Petroleum Geologists Memoir 40, 339?372.
[5]
Rabinowitz, P. D., Labrecque, J. (1979). The Mesozoic South Atlantic Ocean and evolution of its continental margins. J Geophys Res 1979; 84 (11): 5973-6002.
[6]
Ross, D. (1993). Geology and hydrocarbon potential of Rio Muni area, Equatorial Guinea: Oil and Gas Journal, v. 91, August 23, 1993, 96?100.
[7]
Turner, J. P., (1995). Gravity-driven structures and rift basin evolution?Rio Muni Basin, offshore West Africa: American Association of Petroleum Geologists Bulletin, v. 79, no. 8, p. 1138?1158.
[8]
Nguene, F. R, Tamfu, S. F., Loule, J. P., Ngassa, C. (1991). Palaeoenvironments of the Douala and Kribi/Campo sub-basins, in Cameroon, West Africa. In: Curnelle R, Ed. African Geology, 1 st Colloquium on Stratigraphy and Paleogeography of West African Sedimentary Basins, 2 nd Colloquium of African Micropaleontology. Libreville 1991, Boussens: Elf Aquitaine 1992; 129-39.
[9]
Shang, C. K. (2001). Geology, Geochemistry and Geochronology of Archaean Rocks from the Sangmelima Region, Ntem complex, NW Congo craton, South Cameroon. Ph.D. Thesis, University of Tu?bingen, Germany, 313p.
[10]
Tchameni, R., Mezger, K., Nsifa, N.E., Pouclet, A., (2001). Crustal origin of Early Proterozoic syenites in the Congo craton (Ntem complex), South Cameroon. Lithos 57, 23?42.
[11]
Nsifa, E.N., Riou, R., (1990): Post Archaean migmatization in the charnockitic series of the Ntem complex, Congo craton, southern Cameroun. 15th Colloquium on African Geology, Publications Occasionnelle, CIFEG 22, 33?36.
[12]
Lasserre, M., Soba, D., (1976). Age Lib?rien des granodiorites et des gneiss a pyrox?nes du Cameroun M?ridional. Bulletin BRGM 2 (4), 17?32.
[13]
Njoh O. A., Essien J. A., et Tembi A., (2014). Albian ? Turonian palynomorphs from the Mundeck and Logbajeck Formations, Ediki River, north-western part of Douala sub-basin. Sciences, Technologies et Developpement, volume 15, 66 ? 77, ISSN 1029 ? 2225
[14]
Njingti-Nfor (2004). New Methods of Analysing and Interpreting Audiomagnetotellurics Data. Doctorate thesis, University of Yaound? I, Yaound?, 185 p.
[15]
Recard N. N. P., Mfayakouo C. B., and Bitom D., (2014). Paleogeographic Evolution of the Eastern Edge of the Douala Basin from Early Cenomanian to Turonian. The Open Geology Journal, 8, 124-141.
[16]
Meyers J. B., Rosendahl B. R., Groschel-Becker H., Austin Jr J. A., Rona P. A. (1996). Deep penetrating MCS imaging of the rift-to-drift transition, offshore Douala and North Gabon basins, West Africa. Mar Petrol Geol 1996; 13 (7): 791-835.
[17]
De Vries, (1936). Mission de recherche des hydrocarbures du Cameroun effectu? en 1935 ? 1936. Rapport g?n?ral, Services des mines au Cameroun. 72p.
[18]
Njike Ngaha P., R, (2004). Palyno-stratigraphique et reconstitution des paleoenvironnements du Cr?tac? de l'Est du Bassin s?dimentaire de Douala (Cameroun).
[19]
Njike, N. P. R., and Belinga, S. M., (1987). Le Diachronisme du gr?s de base, le pal?ooenvironnement et le r?le de l?ouverture de l?Atlantique Sud. Ann. Fac. Sci. Terre IV No. 3-4, 103 ? 119.
[20]
Dumort, J. C., (1968). Notice explicative sur la faille de Douala ? Ouest. Direction des mines et de la g?ologie du Cameroun. 69p. index, 1 carte h.t.
[21]
Djomeni A. L., Ntamak-Nida M. J., Mvondo F. O., Kwetche P. G. F., Kissaaka J. B. I., and Mooh-Enougui E. (2011). Soft-sediment deformation structures in Mid-Cretaceous to Mid-Tertiary deposits, Centre East of the Douala sub-basin, Cameroon: Preliminary results of the tectonic control. Syllabus Review 2 (3), 2011: 92 - 105
[22]
Maurizot, P., Abessolo, A., Feybesse, J. L., Johan, V. and Lecomte, P. (1986). Etude et prospection mini?re du sud- ouest Cameroun. Synth?se des travaux de 1978 ? 1985. Rapport, BRGM, 274p
[23]
Toteu, S. F., Penaye, J., Poudjom Djomani, Y. H., (2004). Geodynamic evolution of the Pan-African belt in Central Africa with special reference to Cameroon. Canadian Journal of Earth Sciences, 41, 73?85.
[24]
Benderitter, Y. (1982). Interpr?tation des mesures magn?totelluriques obtenues avec un r?sistivim?tre ECA. CNRS, CRG, Garchy.
[25]
Manguelle-Dicoum, E. (1988). Etude G?ophysique des structures superficielles et profondes de la r?gion de Mbalmayo. Th?se de Doctorat es-sciences (G?ophysique). Universit? de Yaound?, 202 p.
[26]
Parasnis D. S. (1979). Principles of Applied Geophysics. Chapman and Hall. (3rd Edition) London, 275p.
[27]
Zohdy, A. A. R., Eaton, G. P. and Mabey, D. R. (1990). Application of Surface Geophysics to Ground-Water Investigations. 4th Edition, United States Geological Survey, Denver, 123p.
[28]
Geza K. (1966). Principles of Direct Current Resistivity Prospecting. Geopublication Associates Series 1- No. 1
[29]
Telford, W. M., Geldart, L. P., Sheriff, R. E. and Keys, D. A. (1990). Applied Geophysics. Cambridge University Press, Cambridge.
[30]
Cagniard, L. (1953). Basic Theory of the Magnetotelluric Method of Geophysical Prospecting. Geophysics, 18, 605-635.
[31]
Redmond, J. L. (1972). Null Combination in Fault Interpretation. Bulletin ?American Association of Petroleum Geologists, 56, 150-166.
[32]
Bates, R. L. and Jackson, J. A. (1987). Glossary of Geology. 3rd Edition, American Geological Institute, Alexandria, 788 p.
[33]
Lee, S. K., Kim, H. G., Song, Y. and Lee, C. (2009). MT2DInvMATLAB?A Program in FORTRAN and MATLAB for 2D Inversion. Computer and Geoscience, 35, 1722-1734.
[34]
Njingti-Nfor, Manguelle-Diccoum, E., Mbom-Abane and Tadjou, J. M. (2001). Evidence of Major Tectonic Dislocations along the Southern Edge of the Pan African Mobile Belt and the Congo Craton Contact in the Southern Region of Cameroon. The 2nd International Conference on the Geology of Africa, Assuit, Vol. 1, 799-811.
[35]
Owona Angue, M. L. C., Nguiya, S., Nouayou, R., Tokam Kamga, A. P. and Manguelle-Dicoum, E., (2011). Geophysical Investigation of the Transition Zone between the Congo Craton and the Kribi-Campo Sedimentary Basin (South-West Cameroon). South African Journal of Geology, 114, 145-158.
[36]
Iboum Kissaaka, J. B., Ntamak-Nida, M. J., Ngueutchoua, G., Mvondo Owono, F., Djomeni Nitcheu, A. L., Fowe Kuetche, P. G. and Bourquin, S. (2016). Syn-rift Tectonic Markers from Outcrops and Offshore Seismic Data of the Southern Part of Kribi-Campo Sub-Basin (Cameroon, West African Margin). Comunica??es Geological, 99, 35-42.
[37]
Kue Petou R. M., Owona Angue. M. L. C., Njingti-Nfor, N., Ndougsa-Mbarga, T. and Manguelle-Dicoum, E. (2017b). Determination of Structural and Geometrical Parameters of the Kribi-Campo Sedimentary Sub Basin Using Gravity Data. International Journal of Geosciences, 8, 1210-1224.

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