Micropaleontological Analysis of Rocks of Mbakwah and Environs, Gboko, Southeast Nigeria

1
Ozioko Obinna Hyginus
Ozioko Obinna Hyginus
2
Onwuka  Solomon Obialo
Onwuka Solomon Obialo
3
Ezugwu Chimamkpan Keneth
Ezugwu Chimamkpan Keneth
1 University Of Nigeria, Nsukka

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Micropaleontological analyses of rock samples from outcrops and hand-dug wells in Gboko and its environs were carried out to better understand the geology of the area, properly delineate the various lithologies and infer the ages of the rocks. Detailed geologic mapping, micropaleontologic and petrographic methods were applied. Micropaleontological analysis involved washing and viewing of shale samples under microscope for the identification of the microfossils. The area is underlain by black shale inter-bedded with calcareous sandstone and carbonaceous limestone beds. Results of micropaleontological analysis yielded foraminifers and ostracods ranging from Cenomanian to Coniacian. Ovocytherideasymmetrica and Ovocytheridea-reniformisranges from Cenomenian to Coniacian, while Ovocytherideaashakaensis and Clithocytheridea-senegaliare indices of Turonian age. Foraminiferal analysis reveals the occurrence of benthic and planktonic index forms including Ammobaculitesjessensis, Ammobaculitesbenuensis, Whiteinell-abaltica and Heterohelixreussi. The dominant arenaceous benthic foraminifers and the smooth ostracods suggests a shallow marginal marine brackish water environment.

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No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Not applicable for this article.

Ozioko Obinna Hyginus. 2020. \u201cMicropaleontological Analysis of Rocks of Mbakwah and Environs, Gboko, Southeast Nigeria\u201d. Global Journal of Science Frontier Research - H: Environment & Environmental geology GJSFR-H Volume 20 (GJSFR Volume 20 Issue H4): .

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GJSFR Volume 20 Issue H4
Pg. 53- 66
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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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GJSFR-H Classification: FOR Code: 059999
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v1.2

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October 5, 2020

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English

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Micropaleontological analyses of rock samples from outcrops and hand-dug wells in Gboko and its environs were carried out to better understand the geology of the area, properly delineate the various lithologies and infer the ages of the rocks. Detailed geologic mapping, micropaleontologic and petrographic methods were applied. Micropaleontological analysis involved washing and viewing of shale samples under microscope for the identification of the microfossils. The area is underlain by black shale inter-bedded with calcareous sandstone and carbonaceous limestone beds. Results of micropaleontological analysis yielded foraminifers and ostracods ranging from Cenomanian to Coniacian. Ovocytherideasymmetrica and Ovocytheridea-reniformisranges from Cenomenian to Coniacian, while Ovocytherideaashakaensis and Clithocytheridea-senegaliare indices of Turonian age. Foraminiferal analysis reveals the occurrence of benthic and planktonic index forms including Ammobaculitesjessensis, Ammobaculitesbenuensis, Whiteinell-abaltica and Heterohelixreussi. The dominant arenaceous benthic foraminifers and the smooth ostracods suggests a shallow marginal marine brackish water environment.

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Micropaleontological Analysis of Rocks of Mbakwah and Environs, Gboko, Southeast Nigeria

Ozioko Obinna Hyginus
Ozioko Obinna Hyginus University Of Nigeria, Nsukka
Onwuka  Solomon Obialo
Onwuka Solomon Obialo
Ezugwu Chimamkpan Keneth
Ezugwu Chimamkpan Keneth

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