scholarly journals Paleoredox Conditions of Paleocene to Miocene Rocks of Eastern Benin (Dahomey) Basin, Nigeria: Implications for Chemostratigraphy

2021 ◽  
Vol 10 (1) ◽  
pp. 24-35
Author(s):  
Adelabu I. O ◽  
Opeloye S. A ◽  
Oluwajana O. A ◽  
Ogbahon O.A
Keyword(s):  
Dahomey Basin

Geology and hydrocarbon potential of the Nigerian sector of Dahomey Basin

2021 ◽  
Author(s):  
Michael Oluwaseyi Falufosi ◽  
Olawale Olakunle Osinowo
Keyword(s):  
Hydrocarbon Potential ◽  
Dahomey Basin

Luminescence dating of holocene siliciclastic sediments in eastern Dahomey Basin, southwestern Nigeria

2021 ◽  
Author(s):  
Richard O. Fakolade ◽  
Philip R. Ikhane ◽  
Qiuyue Zhao ◽  
Qingzhen Hao ◽  
Helena Alexanderson ◽  
...  
Keyword(s):  
Luminescence Dating ◽  
Southwestern Nigeria ◽  
Dahomey Basin ◽  
Siliciclastic Sediments

Geoelectrical resistivity imaging of shallow oil sands in the Eastern Dahomey Basin (SW Nigeria): Implication for heavy oil exploration and production

2021 ◽  
Vol 176 ◽  
pp. 104122
Author(s):  
Ovie Emmanuel Eruteya ◽  
Muhedeen Ajibola Lawal ◽  
Kamaldeen Olakunle Omosanya ◽  
Adeoye Oshomoji ◽  
Usman Kaigama ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Oil Sands ◽  
Oil Exploration ◽  
Resistivity Imaging ◽  
Dahomey Basin ◽  
Exploration And Production ◽  
Geoelectrical Resistivity

scholarly journals Chemostratigraphic Characterization of Siliciclastic Rocks in Parts of the Eastern Dahomey Basin, Southwestern Nigeria

2014 ◽  
Vol 6 (4) ◽  
Author(s):  
Ikhane P. R. ◽  
Akintola A. I. ◽  
Bankole S. I. ◽  
Ajibade O. M. ◽  
Edward O. O.
Keyword(s):  
Southwestern Nigeria ◽  
Dahomey Basin ◽  
Siliciclastic Rocks

scholarly journals Microfaunal Signals and Paleoenvironmental Reconstruction Sediments in Well Z-1, Offshore Dahomey Basin, South-Western Nigeria

2020 ◽  
pp. 50-61
Author(s):  
Anthonia Nwanese Asadu ◽  
Charles Ojonuba Ameh
Keyword(s):  
Gamma Ray ◽  
Accessory Mineral ◽  
Paleoenvironmental Reconstruction ◽  
Planktic Foraminifera ◽  
Rock Samples ◽  
Foraminiferal Species ◽  
Depositional Settings ◽  
Dahomey Basin ◽  
Abundance And Diversity ◽  
Gamma Ray Log

Fifty ditch cutting rock samples from well Z-1, OPL 310 offshore Dahomey basin, south western Nigeria were analyzed for their microfaunal and lithofacies content for the purpose of reconstructing the environment of deposition. Standard techniques of foraminifera slide processing and analysis was followed for the recovery of foraminifera while the gamma ray log complemented the rock samples for the lithofacies analysis. The lithological analysis revealed two lithofacies units in a generally fining upward sequence. The basal sandstone unit is characteristically milky white to brownish, coarse-pebbly grained, sub-angular to round and poorly to well sort with intercalation of shale. This unit is overlain by light to dark grey, moderately hard and non-fissile shale/mudstone sequence with intercalation of sand. Accessory mineral assemblage present in the formations includes mica flakes, glauconite pellets, carbonaceous detritus and ferruginous materials. The basal sandstone unit belong to the Oshosun Formation while the upper shaly unit is typical of Afowo Formation. Microfaunal study showed good recovery of abundant and well diversified planktic and benthic foraminiferal species. Forty-two (42) planktic, sixty-five (65) benthic calcareous and one benthonic arenaceous foraminiferal species were recovered. Micropaleontologically, Paleoenvironmental deductions were based primarily on the assemblage, abundance and diversity of benthic foraminiferal species and presence or absence of planktic foraminifera. Accessory mineral presence also aided the interpretations. Integration of lithological and micropaleontological synthesis enhanced the delineation of two environmental subzones over the analyzed interval, the outer neritic and the upper bathyal depositional settings corresponding to Afowo and Oshosun Formation respectively. A lowstand prograding wedge which is a good exploration target offshore was recognized between intervals 3400 ft to 3500 ft. In conclusion, the rock succession studied, penetrated Afowo and Oshosun Formations, and were deposited in an environment ranging from outer neritic to upper bathyal settings.

Geochemistry and paleoecology of shales from the Cenomanian-Turonian Afowo formation Dahomey Basin, Nigeria: Implication for provenance and paleoenvironments

2020 ◽  
Vol 169 ◽  
pp. 103887 ◽  
Author(s):  
James A. Adeoye ◽  
Samuel O. Akande ◽  
Olabisi A. Adekeye ◽  
Victor T. Abikoye
Keyword(s):  
Dahomey Basin

Cenomanian to Coniacian sea-level changes in the Lower Benue Trough (Nkalagu Area, Nigeria) and the Eastern Dahomey Basin: palaeontological and sedimentological evidence for eustasy and tectonism

2019 ◽  
Vol 498 (1) ◽  
pp. 233-255 ◽  
Author(s):  
Holger Gebhardt ◽  
Samuel O. Akande ◽  
Olabisi A. Adekeye
Keyword(s):  
Sea Level ◽  
Deep Water ◽  
Close Relation ◽  
Depositional Environments ◽  
Sea Level Changes ◽  
Foraminiferal Assemblage ◽  
Benue Trough ◽  
Sea Level Fluctuations ◽  
Dahomey Basin ◽  
Lower Benue Trough

AbstractThe Benue Trough formed in close relation to the opening of the South Atlantic and experienced sea-level fluctuations of different magnitudes during the Cenomanian to Coniacian interval. We identify depositional environments from outcrop sections and a drilling as control record. Lines of evidence for the interpretation include facies analyses, foraminiferal assemblage composition (P/B-ratio) and the presence of planktonic deep-water indicators. While the analysis of the well data from the Dahomey Basin indicates a continuous deep-water (bathyal) environment, the succession in the Nkalagu area of the Lower Benue Trough evolved in a different and more complex way. Beginning with latest Cenomanian shoreface to shelf deposits, a long period of subsidence lasted until the middle Turonian when pelagic shales and calcareous turbidites were deposited at upper to middle bathyal depths. These conditions continued during late Turonian and Coniacian times. The general deepening trend of the Lower Benue Trough was mainly controlled by tectonic subsidence and was superimposed by eustatic sea-level changes, resulting in periodically changing palaeowater depths. We were able to identify eight sea-level rises and falls that can be attributed to 405 kyr eccentricity cycles. The amplitudes of the sea-level changes were most likely in the range of several tens to a few hundred metres. The deposition of carbonate turbidites at Nkalagu was probably triggered by eustatic sea-level lowstands.

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