Geochemical and Biostratigraphical Evaluation of Lokpanta Shale in Abakaliki Anticlinorium, Anambra Basin Province, Southeast Nigeria
A geochemical and biostratigraphic method has been applied to explore the quality of organic matter, thermal evolution, potential hydrocarbon source and type of fossils of Lokpanta Shale from the Abakaliki Anticlinorium, Anambra Basin Province, Southeast Nigeria. Data obtained reveal that the total...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)
2024-03-01
|
| Series: | Journal of Applied Sciences and Environmental Management |
| Subjects: | |
| Online Access: | https://www.ajol.info/index.php/jasem/article/view/267299 |
| _version_ | 1797228262000164864 |
|---|---|
| author | M. U. Uzoegbu A. I. Amoke |
| author_facet | M. U. Uzoegbu A. I. Amoke |
| author_sort | M. U. Uzoegbu |
| collection | DOAJ |
| description |
A geochemical and biostratigraphic method has been applied to explore the quality of organic matter, thermal evolution, potential hydrocarbon source and type of fossils of Lokpanta Shale from the Abakaliki Anticlinorium, Anambra Basin Province, Southeast Nigeria. Data obtained reveal that the total organic carbon (TOC) (2.18wt%) of the shale constitutes that of good to excellent source rock with gas-prone kerogen indicated by Rock-Eval S2/S3 (2.32). The low oxygen index (OI) (27.20 mgCO2g-1TOC) suggest deposition under low energy environments. The plots of HI against Tmax classified the organic matter as Type III kerogen. The poor concentration of OM is thought to account for its current hydrogen index (31.47 mgHCg-1TOC). The predominance of Type III kerogen in the Lokpanta shale suggests their potential to generate gas in the deeply buried sections. The Tmax values from the pyrolysis of the shales of the Lokpanta ranges from 428 to 442oC corresponding to maturity levels within the oil formation. The lamination of the sediments of the Lokpanta area with no burrows and the occurrence of dominantly planktonic foraminiferal assemblages also indicate a quiet water anoxic marine condition.
|
| first_indexed | 2024-04-24T14:53:54Z |
| format | Article |
| id | doaj.art-dca17fe3745248aa8f7693d2289648e8 |
| institution | Directory Open Access Journal |
| issn | 2659-1502 2659-1499 |
| language | English |
| last_indexed | 2024-04-24T14:53:54Z |
| publishDate | 2024-03-01 |
| publisher | Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP) |
| record_format | Article |
| series | Journal of Applied Sciences and Environmental Management |
| spelling | doaj.art-dca17fe3745248aa8f7693d2289648e82024-04-02T19:46:16ZengJoint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)Journal of Applied Sciences and Environmental Management2659-15022659-14992024-03-01283Geochemical and Biostratigraphical Evaluation of Lokpanta Shale in Abakaliki Anticlinorium, Anambra Basin Province, Southeast NigeriaM. U. UzoegbuA. I. Amoke A geochemical and biostratigraphic method has been applied to explore the quality of organic matter, thermal evolution, potential hydrocarbon source and type of fossils of Lokpanta Shale from the Abakaliki Anticlinorium, Anambra Basin Province, Southeast Nigeria. Data obtained reveal that the total organic carbon (TOC) (2.18wt%) of the shale constitutes that of good to excellent source rock with gas-prone kerogen indicated by Rock-Eval S2/S3 (2.32). The low oxygen index (OI) (27.20 mgCO2g-1TOC) suggest deposition under low energy environments. The plots of HI against Tmax classified the organic matter as Type III kerogen. The poor concentration of OM is thought to account for its current hydrogen index (31.47 mgHCg-1TOC). The predominance of Type III kerogen in the Lokpanta shale suggests their potential to generate gas in the deeply buried sections. The Tmax values from the pyrolysis of the shales of the Lokpanta ranges from 428 to 442oC corresponding to maturity levels within the oil formation. The lamination of the sediments of the Lokpanta area with no burrows and the occurrence of dominantly planktonic foraminiferal assemblages also indicate a quiet water anoxic marine condition. https://www.ajol.info/index.php/jasem/article/view/267299Anambra basin; Source rock; Kerogen type; Pyrolysis; Maturity; Foraminifera |
| spellingShingle | M. U. Uzoegbu A. I. Amoke Geochemical and Biostratigraphical Evaluation of Lokpanta Shale in Abakaliki Anticlinorium, Anambra Basin Province, Southeast Nigeria Journal of Applied Sciences and Environmental Management Anambra basin; Source rock; Kerogen type; Pyrolysis; Maturity; Foraminifera |
| title | Geochemical and Biostratigraphical Evaluation of Lokpanta Shale in Abakaliki Anticlinorium, Anambra Basin Province, Southeast Nigeria |
| title_full | Geochemical and Biostratigraphical Evaluation of Lokpanta Shale in Abakaliki Anticlinorium, Anambra Basin Province, Southeast Nigeria |
| title_fullStr | Geochemical and Biostratigraphical Evaluation of Lokpanta Shale in Abakaliki Anticlinorium, Anambra Basin Province, Southeast Nigeria |
| title_full_unstemmed | Geochemical and Biostratigraphical Evaluation of Lokpanta Shale in Abakaliki Anticlinorium, Anambra Basin Province, Southeast Nigeria |
| title_short | Geochemical and Biostratigraphical Evaluation of Lokpanta Shale in Abakaliki Anticlinorium, Anambra Basin Province, Southeast Nigeria |
| title_sort | geochemical and biostratigraphical evaluation of lokpanta shale in abakaliki anticlinorium anambra basin province southeast nigeria |
| topic | Anambra basin; Source rock; Kerogen type; Pyrolysis; Maturity; Foraminifera |
| url | https://www.ajol.info/index.php/jasem/article/view/267299 |
| work_keys_str_mv | AT muuzoegbu geochemicalandbiostratigraphicalevaluationoflokpantashaleinabakalikianticlinoriumanambrabasinprovincesoutheastnigeria AT aiamoke geochemicalandbiostratigraphicalevaluationoflokpantashaleinabakalikianticlinoriumanambrabasinprovincesoutheastnigeria |