Sedimentological and geochemical characterization of the Cretaceous strata of Calabar Flank, southeastern Nigeria

Boboye, Olugbenga A.; Okon, Emmanuel Etim

doi:10.1016/j.jafrearsci.2014.04.035

Cited by 12 publications

(5 citation statements)

References 20 publications

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“…Organic geochemical appraisal of the associated shales and limestones within the Calabar Flank have been reported by Essien et al (2005); Ekpo et al, (2012), Ekot et al,(2014) ; Boboye and Okon (2014). Boboye and Okon (2014), worked on sedimentological and geochemical characterization of the sediments of Calabar Flank by using petrography, inorganic and organic geochemical studies to deduce the provenace, depositional environment, hydrocarbon potential as well as tectonic setting of the area .…”

Section: Introductionmentioning

confidence: 92%

“…10 a-c), the samples from the study area plot in the continental island arc terrain and passive continental margin. Boboye and Okon (2014) deduced a passive to active continental margin tectonic settings for the sediments of Calabar Flank while Okon et al, (2017) reported mainly passive to active continental margins for the Awi Formation. In a related study in southeastern part of the Niger Delta, Oni et al, (2014) characterised the sediments as belonging to active continental margin tectonic setting.…”

Section: Tectonic Settingmentioning

confidence: 99%

“…Boboye and Okon (2014), worked on sedimentological and geochemical characterization of the sediments of Calabar Flank by using petrography, inorganic and organic geochemical studies to deduce the provenace, depositional environment, hydrocarbon potential as well as tectonic setting of the area .…”

Section: Introductionmentioning

confidence: 99%

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Geochemistry of Ekenkpon and Nkporo shales, Calabar flank, SE Nigeria: implications for provenance, transportation history and depositional environment

Nton¹,

Akpan²,

Adamolekun³

2018

Glo Jnl Geo Sci

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Section: Introductionmentioning

confidence: 92%

Section: Tectonic Settingmentioning

confidence: 99%

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Geochemistry of Ekenkpon and Nkporo shales, Calabar flank, SE Nigeria: implications for provenance, transportation history and depositional environment

Nton¹,

Akpan²,

Adamolekun³

2018

Glo Jnl Geo Sci

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“…The Calabar Flank has been extensively studied from a geological perspective (e.g. Reyment, 1965;Murat, 1972;Adeleye and Fayose, 1978;Petters, 1979Petters, , 1980Petters and Ekweozor, 1982;Akpan, 1985;Nyong and Ramanathan, 1985;Braide, 1987;Nyong, 1993, 1994;Adegbie and Bassey, 2007;Ekpo et al, 2012Ekpo et al, , 2013Boboye and Okon 2014;Ukpong and Ekhalialu, 2018;Itam et al, 2019). Early Investigations of its biostratigraphy have been documented by Reyment (1965), Dessauvagie (1965) and Nyong and Ramanathan (1985).…”

Section: Introductionmentioning

confidence: 99%

“…The petroleum potentials of Cretaceous outcrops from the Calabar Flank has been evaluated by Ekpo et al (2013). A sedimentological and geochemical study of Cretaceous strata of the Calabar Flank has been documented by Boboye and Okon (2014). Ukpong and Ekhalialu (2018) studied the Cenomanian-Turonian foraminifera and palynomorphs of the Calabar Flank based on age and depositional environment.…”

Section: Introductionmentioning

confidence: 99%

Foraminiferal Study of Nkporo Shale Exposures, Calabar Flank (Se Nigeria): Age and Depositional Environment

Itam

Emeka

2019

J. Sed. Env.

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Foraminiferal analysis of the sedimentary deposits of Nkporo shale exposed at PAMOL along Calabar/Odukpani Road, in the Calabar Flank, Southeastern Nigeria, was investigated in order to determine its geological age and paleoenvironmental conditions. The lithology is predominantly composed by shale with traces of siltstone and sandstone. Shale is generally light to dark grey, occasionally light brown, sub-fissile to fissile, moderately hard, carbonaceous, and slightly ferruginous. Results of foraminiferal analysis showed that the samples consist predominantly of arenaceous/agglutinated benthic foraminifera. Calcareous planktic foraminifera are absence and calcareous benthic taxa are almost absence of calcareous. The occurrence of the following foraminifera taxa Ammobaculite sp., Haplophragmoides sahariense, Haplophragmoides talokaense, Trochammina sp., Trochammina dustuna, Ammobaculites amabensis and Bolivina sp. suggest that sediments in the study area were deposited during the Maastrichtian age. The paleo-depositional-environment should occur in transitional marine settings, probably a marsh/lagoon. In the study area, calm hydrodynamic conditions prevailed. They favored the accumulation of fine-grained sediment and organic matter which gave rise to oxygen scarcity. The environment would be stressful for benthic foraminifera not only because of oxygen scarcity but also due to the variability of water salinity (hypo to hypersaline). ESTUDO DE FORAMINÍFEROS DOS FOLHELHOS DE NKORHO, CALABAR FLANK (SE DA NIGERIA): IDADE E AMBIENTE DEPOSICIONAL ResumoA análise de foraminíferos dos depósitos sedimentares do folhelho Nkporo expostos em PAMOL ao longo da estrada de Calabar/Odukpani, em Calabar Flank, sudeste da Nigéria, foi estudada tendo em vista determinar sua idade relativa e condições paleoambientais. A litologia é predominantemente composta por folhelho com camadas de siltito e arenito. O folhelho é, em geral, cinza claro a escuro, ocasionalmente marrom claro, sub-físsil a físsil, moderadamente consolidado, carbonáceo e levemente ferruginoso. Os resultados da análise dos foraminíferos mostraram que as amostras estudadas contêm predominantemente foraminíferos bentónicos arenáceos/aglutinantes. Não foram encontrados foraminíferos planctónicos, estando também quase ausentes táxons bentónicos com carapaça constituída por carbonato de cálcio. A ocorrência dos seguintes taxa Ammobaculites sp., Haplophragmoides sahariense, Haplophragmoides talokaense, Trochammina sp., Trochammina dustuna, Ammobaculites amabensis e Bolivina sp. sugerem que os sedimentos na área de estudo foram depositados durante o Maastrichtiano (Cretaceo superior). A sedimentação deverá ter ocorrido em ambiente marinho de transição, provavelmente em pântanos/lagoas. Na área de estudo, prevaleceram condições hidrodinâmicas calmas que favoreceram o acúmulo de sedimentos finos e matéria orgânica, que originou a escassez de oxigênio. O ambiente seria estressante para os foraminíferos bentónicos, não só devido à escassez de oxigênio, mas também devido à variabilidade da salinidade da água (hipo a hipersalina). Palavras-chave: Bioestratigrafia. Foraminíferos Bentônicos. Aglutinantes. Maastrichtiano. Cretáceo. Ambiente marinho de transição.

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Sandstone Petrography and Geochemistry of the Pre-albian Awi Formation, Calabar Flank, Southeast Nigeria

Okon,

Essien,

Oyetade

et al. 2023

Advances in Science, Technology &Amp; Innovation

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Sedimentological and geochemical characterization of the Cretaceous strata of Calabar Flank, southeastern Nigeria

Cited by 12 publications

References 20 publications

Geochemistry of Ekenkpon and Nkporo shales, Calabar flank, SE Nigeria: implications for provenance, transportation history and depositional environment

Geochemistry of Ekenkpon and Nkporo shales, Calabar flank, SE Nigeria: implications for provenance, transportation history and depositional environment

Foraminiferal Study of Nkporo Shale Exposures, Calabar Flank (Se Nigeria): Age and Depositional Environment

Sandstone Petrography and Geochemistry of the Pre-albian Awi Formation, Calabar Flank, Southeast Nigeria

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