Benin and Western Nigeria Offshore Basins: A Stratigraphic Nomenclature ComparisonReportar como inadecuado




Benin and Western Nigeria Offshore Basins: A Stratigraphic Nomenclature Comparison - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

The Benin and Western Nigeria OffshoreBasins, which are parts of an extensive basin called the Dahomey Benin Embayment,were formed during the Early Cretaceous under similar tectonic conditions andcontinental sedimentary environments. Based mainly on available lithological,biostratigraphic and paleoenvironmental data, this paper summarizes thestratigraphic succession of theses basins and attempts a comparison of thesestratigraphic nomenclatures. The bulk of data shows that sedimentation beginswith terrestrial at the base, passes through shallow marine, deep marine withrestrictive bottom circulation and ends with open deep marine conditions. Thestratigraphy of the Offshore Benin Basin was established later and consideringlithological and paleontological similarities with formations of varioussouthern Nigeria basins, the stratigraphic chart adopted for this basin was amixed variant of various Southern Nigerian basins nomenclatures. For the firsttime, a correlation of stratigraphic charts of each basins and a schematiccross section showing their lithostratigraphic units, especially theCretaceous-Paleocene interval which is petroliferous, are proposed. The studyshows that the nomenclature adopted in Benin Republic must be revised by usingtype section-locality names for some particular Formations and widely acceptedFormations names of Nigeria for the others. This will permit to avoidconfusions as it is presently the case for the name -Afowo Formation-representing a Cretaceous sequence in Nigeria and which is use in BeninRepublic to distinguish some sediments of Miocene age. Moreover, a HighResolution Biostratigraphy summary including micropaleontology, nannopaleontologyand palynology distributions relating to each offshore basin is needed forsequences correlations and entire harmonization of the stratigraphicnomenclature of these offshore basins.

KEYWORDS

Benin, Western Nigeria, Offshore Basins, Stratigraphy, Stratigraphic Nomenclature, Comparison

Cite this paper

d’Almeida, G. , Kaki, C. and Adeoye, J. 2016 Benin and Western Nigeria Offshore Basins: A Stratigraphic Nomenclature Comparison. International Journal of Geosciences, 7, 177-188. doi: 10.4236-ijg.2016.72014.





Autor: Gérard Alfred Franck d’Almeida1*, Christophe Kaki1, James Adejimi Adeoye2

Fuente: http://www.scirp.org/



DESCARGAR PDF




Documentos relacionados