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Maurizot, P., Abessolo, A., Feybesse, J.L., Johan, V. and Lecomte, P., (1986) Etude et prospection minière du sud- ouest Cameroun. Synthèse des travaux de 1978 à 1985. Rapport, BRGM, 274 p.

has been cited by the following article:

  • TITLE: 3D Modelling from New and Existing Gravity Data of an Intrusive Body in the Northern Part of Kribi-Campo Sub-Basin in Cameroon

    AUTHORS: Kue Petou Rokis Malquaire, Owona Angue Marie Louise, Njingti Nfor, Manguelle-Dicoum Eliezer

    KEYWORDS: Kribi-Campo Sub-Basin, Gravity Data, 3D Modelling, Spectral Analysis, Residual Anomaly

    JOURNAL NAME: International Journal of Geosciences, Vol.8 No.8, August 22, 2017

    ABSTRACT: A new gravity survey was carried out in the northern part of the onshore Kribi- Campo sub-basin in Cameroon. The data were incorporated to the existing ones and then analyzed and modeled in order to elucidate the subsurface structure of the area. The area is characterized in its north-western part by considerably high positive anomalies indicative of the presence of a dense intrusive body. We find, 1) from the analysis of the gravity residual anomaly map, the high positive anomalies observed are the signature of a shallow dense structure; 2) from the multi-scale analysis of the maxima of the horizontal gradient, the structure is confined between depths of 0.5 km and 5 km; 3) from the quantitative interpretation of residual anomalies by spectral analysis, the depth to the upper surface of the intrusive body is not uniform, the average depth of the bottom is h1 = 3.6 km and the depths to particular sections of the roof of the intrusion are h2 = 1.6 km and h3 = 0.5 km; 4) and the 3D modeling gives results that are suggestive of the presence of contacts between rocks of different densities at different depths and a dense intrusive igneous body in the upper crust of the Kribi zone. From the 3D model the dense intrusive igneous block is surrounded by sedimentary formations to the south-west and metamorphic formations to the north-east. Both formations have a density of about 2.74 g/cm3. The near surface portions of this igneous block lie at a depth range of 0.5 km to 1.5 km while its lower surface has a depth range of 3.6 km to 5.2 km. The shape of the edges and the bottom of the intrusive body are suggestive of the fact that it forms part of a broader structure underlying the Kribi-Campo sub-basin with a great influence on the sedimentary cover.