Offshore Stratigraphic Architecture of the Miocene to Actual Deposits in the Southern Margin of Rio-Del-Rey (South Cameroon)

Authors

  • Arnold louvier Noudjo Djeudjam University of Douala
  • François Mvondo Owon
  • Marie-Joseph Ntamack-Nida
  • Raphael Belinga
  • Stephane Koum
  • François Guillocheau

Keywords:

Rio-Del Rey, architecture, seismic stratigraphy, diagraphy, isochronal.

Abstract

The study of the geometric deposits in a basin allows the reconstitution of its tectonic and eustatic history. The Rio-del Rey basin, upon which this study is being carried out, constitutes one of the two Cameroon margin basins located North of the Cameroon volcanic line. To study the stratigraphic architecture of the Miocene deposits consists in characterizing the deposits geometry by discriminating the controlling factors. This study is based on data, made up of 13 seismic lines and 07 wells and then on various methods related on seismostratigraphy and diagraphies. The obtained lithologies in the study area constituted essentially of sandy and clayey deposits from Paleocene to Recent. They are grouped differently in to Akata, Agbada and Benin Formations, and the Isongo Member. These deposits are set up in marines (bathyal and neritic), deltaics, turbiditic cones slope and fluvial channels environments. Three second-orders sequences were identified (S1, S2 and S3), they are made up of deposits presenting variable geometries along the basin. They are prograding, aggrading, in domes and synclinal. The disposition of the deposits was influenced by tectonic structures such as folds and faults. The isochronal map allows understand the sedimentary flow impact on topographic evolution of the basin in the upper- Miocene. It turns out that, deposits of this basin present various geometric tectonics control (subsidence and uplift) that constitute a major influential factor, being marked by the presence of synclines (gravity tectonics), domes (argilocinesis) and syn-sedimentary faults. The fall in marine level eustatism gives rise to progradations, whereas, a rise in marine level is responsible for retrogradations and aggradations. Thus, the sedimentary flow exerts a secondary control. It is related to the above two major factors.

Author Biography

Arnold louvier Noudjo Djeudjam, University of Douala

Departement of Geosciences, Phd student

References

[1]. H. Bauer. ‘’Infuence of climate, eustasy and tectonics in the architecture of continental deposits. a case study from the early and middle miocene of the digne-valensole foreland basin (SE France).’’phD. Sciences of the Universe. Ecole Nationale Superieure des Mines de Paris, France, 2006.
[2]. V. Bellec. ‘’Evolution morphostructurale et morphosedimentaire de la plate-forme aquitaine depuis le neogene.’’ phD. Science de la Terre. Université bordeaux I, France , 2003.
[3]. B. Blin. ‘’Synthèse cinématique, sédimentaire et pétrolière du bassin du Rio Del Rey (Cameroun)’’unpublished internal raport, Cameroun, 1999.
[4]. S. Bourquin. ‘’Analyse facio-sequentielle par diagraphies du trias du centre-ouest du bassin de paris: apports a la reconstitution de l'environnement de depot. Science de la Terre.’’ phD. Université Henry poincaré, France , 1991.
[5]. C. Duvail. ‘’Expression des facteurs régionaux et locaux dans l'enregistrement sédimentaire d'une marge passive. Exemple de la marge du Golfe du Lion étudiée selon un continuum terre-mer. Minéralogie.’’ phD. Université de Montpellier 2, Frances, 2008.
[6]. R. M. Coughlin, W.O. Bement and W.V. Maloney. ‘’Petroleum Geology of the Deltaïc Sequence, Rio Del Rey Basin, offshore Cameroon’’, AAPG International Conference and Exhibition, the Hague, Netherlands, vol. pp 17-20. 1993
[7]. Exxon. ‘’Interprétation stratigraphique des sections sismiques.’’ Mémoire AAPG, n°26, Sneap, 1978.
[8]. J. L. Grimaud ‘’Dynamique long terme de l'érosion en contexte cratonique: l'Afrique de l'Ouest depuis l'Eocène.’’ Géoscience. Université de Toulouse, France, 2014.
[9]. J. Hardenbol , J. Thierry, M. B. Farley, P. C. De Graciansky, and P.R. Vail, ‘’Mesozoic and Cenozoic sequence chronostratigraphic framework of European basins’’ 1998.
[10]. I. Hezzi . ‘’Caractérisation géophysique de la plateforme de Sahel, Tunisie nord-orientale et ses conséquences géodynamiques.’’ PhD. Géophysique, Université Rennes 1, France, 2014.
[11]. S. Koum, F. Mvondo Owono, M.-J. Ntamak-Nida, B. Njom, R. Belinga, E. Boum. ‘’Surrection relative plio-pleistocene de la marge Sud du Rio del Rey (Cameroun) à partir de la géomorphologie quantitative sur Modèle Numérique de Terrain (MNT).’’ Science, Technologie et Devellopement, vol 14, pp 59-69. 2013.
[12]. R. M. Mitchum, P.R. Vail, J.B. Sangree. ‘’Seismic stratigraphy and global changes of sea level, Part 6: Stratigraphic interpretation of seismic reflection patterns in depositional sequences C.E. Payton Ed., Seismic Stratigraphy-Applications to hydrocarbon exploration, AAPG, Mem. 26, 1977. pp 117-133.
[13]. F. Mvondo Owono. ’’Surrection cenozoique de l'Ouest de l'Afrique à partir de deux exemples : Le plateau sud-namibien et la marge nord-camerounaise.’’ PhD. Science de la Terre. Université de Reine1, France, p 327. 2010.
[14]. O. Njoh Anoh and J. Agbor Taku. ‘’Shallow Marine Cretaceous Sequences and Petroleum Geology of the Onshore Portion Rio del Rey Basin, Cameroon, Gulf of Guinea.’’ Journal of Marine Science. vol 6, pp177-192. 2016.
[15]. O. Raynal. ‘’Architecture de dépôts et facteurs de contrôle d’un système côtier à faibles apports sédimentaires - le littoral languedocien (Golfe du Lion, Sud de la France).’’ PhD. Université de montpellier II, France, p187, 2008.
[16]. D. Reyre. ‘’Bassin sédimentaires du littoral africain,’’ Travaux de symposium de New Delhi 1964, Paris. Association des services géologiques africains, 1966.
[17]. J.B Sangree and J. M. Widmier. ‘’Seismic Stratigraphy and Global Changes of Sea Level, Part 9.’’ The American Association of Petroleum Geologists Bulletin V. 62. No. 5 (May 1978), pp752-771, 1977.
[18]. O. ‘’Serra Diagraphies (géophysique).’’ Encyclopedia Universalis, 1990, pp. 348357.
[19]. SNH/UD. ‘’Stratigraphie séquentielle et tectonique des dépôts mésozoïque syn-rift du sous bassin de Kribi-Campo.’’ Rapport non publié, pp134, 2005.
[20]. P.R. Vail, R.M. Mitchum, and S. Thompson. ‘’Seismic stratigraphy and global changes of sea level,’’ in Seismic - application to hydrocarbon exploration, edited by C. E. Payton pp. 49-205, Amer.Assoc.Petrol. Geol. Memoir. 1977 Part 1 to 11.

Downloads

Published

2018-09-12

How to Cite

Djeudjam, A. louvier N., Owon, F. M., Ntamack-Nida, M.-J., Belinga, R., Koum, S., & Guillocheau, F. (2018). Offshore Stratigraphic Architecture of the Miocene to Actual Deposits in the Southern Margin of Rio-Del-Rey (South Cameroon). American Scientific Research Journal for Engineering, Technology, and Sciences, 46(1), 189–217. Retrieved from https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/4327

Issue

Section

Articles