Provenance Interpretation and Depositional Environment of Sandstones of the Ajali Formation, South of Ifon, Western Flank of Anambra Basin, Southwestern Nigeria
Grain size analysis, heavy mineral analysis, and petrographic studies of sandstones of the Ajali Formation near Imoru (south of the Ifon), the western flank of the Anambra Basin, were conducted to determine the provenance and depositional environment. The textural attributes of the Ajali Sandstone...
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| Format: | Article |
| Language: | English |
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Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)
2024-01-01
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| Series: | Journal of Applied Sciences and Environmental Management |
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| Online Access: | https://www.ajol.info/index.php/jasem/article/view/263660 |
| _version_ | 1797243231006621696 |
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| author | O. A. Oluwajana |
| author_facet | O. A. Oluwajana |
| author_sort | O. A. Oluwajana |
| collection | DOAJ |
| description |
Grain size analysis, heavy mineral analysis, and petrographic studies of sandstones of the Ajali Formation near Imoru (south of the Ifon), the western flank of the Anambra Basin, were conducted to determine the provenance and depositional environment. The textural attributes of the Ajali Sandstone were inferred from the statistical variables namely graphic mean, graphic kurtosis, inclusive graphic standard deviation (sorting), inclusive graphic skewness with values of 0.37 - 1.17 (average 0.55Ø), -9.84 - 3.07 (average 0.09Ø), 0.05 - 1.02 (average 0.75Ø), and -0.03 - 1.00 (average 0.35Ø) respectively. Bivariate plots, such as simple skewness measure versus standard deviation (sorting) and mean versus sorting, suggest that the Ajali Sandstone is mainly a fluvial environment. The petrographic result indicates that quartz is the dominant detrital component with iron oxide, and hematite and goethite are the major cement in the analyzed sandstone sample. The zircon–tourmaline–rutile (ZTR) indices range from 67.65% to 73.17%, indicating that the sandstones are sub-mature to mature. Provenance indicators support igneous rocks of acidic compositions (e.g., granite) and high-grade metamorphic rocks (e.g., granite gneiss) of the Basement Complex of Southwestern Nigeria.
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| first_indexed | 2024-04-24T18:51:49Z |
| format | Article |
| id | doaj.art-8535fcf249994569af86525242bdd8cf |
| institution | Directory Open Access Journal |
| issn | 2659-1502 2659-1499 |
| language | English |
| last_indexed | 2024-04-24T18:51:49Z |
| publishDate | 2024-01-01 |
| 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-8535fcf249994569af86525242bdd8cf2024-03-26T20:01:58ZengJoint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)Journal of Applied Sciences and Environmental Management2659-15022659-14992024-01-0128110.4314/jasem.v28i1.27Provenance Interpretation and Depositional Environment of Sandstones of the Ajali Formation, South of Ifon, Western Flank of Anambra Basin, Southwestern NigeriaO. A. Oluwajana Grain size analysis, heavy mineral analysis, and petrographic studies of sandstones of the Ajali Formation near Imoru (south of the Ifon), the western flank of the Anambra Basin, were conducted to determine the provenance and depositional environment. The textural attributes of the Ajali Sandstone were inferred from the statistical variables namely graphic mean, graphic kurtosis, inclusive graphic standard deviation (sorting), inclusive graphic skewness with values of 0.37 - 1.17 (average 0.55Ø), -9.84 - 3.07 (average 0.09Ø), 0.05 - 1.02 (average 0.75Ø), and -0.03 - 1.00 (average 0.35Ø) respectively. Bivariate plots, such as simple skewness measure versus standard deviation (sorting) and mean versus sorting, suggest that the Ajali Sandstone is mainly a fluvial environment. The petrographic result indicates that quartz is the dominant detrital component with iron oxide, and hematite and goethite are the major cement in the analyzed sandstone sample. The zircon–tourmaline–rutile (ZTR) indices range from 67.65% to 73.17%, indicating that the sandstones are sub-mature to mature. Provenance indicators support igneous rocks of acidic compositions (e.g., granite) and high-grade metamorphic rocks (e.g., granite gneiss) of the Basement Complex of Southwestern Nigeria. https://www.ajol.info/index.php/jasem/article/view/263660Provenance; Sandstone; Ajali Formation; Anambra Basin; Upper Cretaceous |
| spellingShingle | O. A. Oluwajana Provenance Interpretation and Depositional Environment of Sandstones of the Ajali Formation, South of Ifon, Western Flank of Anambra Basin, Southwestern Nigeria Journal of Applied Sciences and Environmental Management Provenance; Sandstone; Ajali Formation; Anambra Basin; Upper Cretaceous |
| title | Provenance Interpretation and Depositional Environment of Sandstones of the Ajali Formation, South of Ifon, Western Flank of Anambra Basin, Southwestern Nigeria |
| title_full | Provenance Interpretation and Depositional Environment of Sandstones of the Ajali Formation, South of Ifon, Western Flank of Anambra Basin, Southwestern Nigeria |
| title_fullStr | Provenance Interpretation and Depositional Environment of Sandstones of the Ajali Formation, South of Ifon, Western Flank of Anambra Basin, Southwestern Nigeria |
| title_full_unstemmed | Provenance Interpretation and Depositional Environment of Sandstones of the Ajali Formation, South of Ifon, Western Flank of Anambra Basin, Southwestern Nigeria |
| title_short | Provenance Interpretation and Depositional Environment of Sandstones of the Ajali Formation, South of Ifon, Western Flank of Anambra Basin, Southwestern Nigeria |
| title_sort | provenance interpretation and depositional environment of sandstones of the ajali formation south of ifon western flank of anambra basin southwestern nigeria |
| topic | Provenance; Sandstone; Ajali Formation; Anambra Basin; Upper Cretaceous |
| url | https://www.ajol.info/index.php/jasem/article/view/263660 |
| work_keys_str_mv | AT oaoluwajana provenanceinterpretationanddepositionalenvironmentofsandstonesoftheajaliformationsouthofifonwesternflankofanambrabasinsouthwesternnigeria |