Palynological Appraisal of the Pliocene Sediments: Chronological and Lithofacies Insights from X-Well, Offshore Setting of the Niger Delta
Abstract
Palynological analyses of X-well in Niger Delta were carried out, fifty-five ditch cuttings at the depth between 460 and 1540 m (20 m intervals) were analyzed. The lithostratigraphic intervals is composed of predominantly fine to medium grained sand with shale intercalation which is conformable to the paralic Agbada Formation. Standard technique was employed by using non-acid method Sodium-hexametaphosphate to remove the drill mud. In addition, the palynomorphs recovery yielded low to moderate and high preservation within the sampled intervals. A total of eighty-six species were documented to interpret the age that is aligned to lithostratigraphy of the formation. Common species identified are Retibrevitricolporites obodoensis, Echiperiporites estelae, Gemmamonoporites sp, Peregrinipollis nigericus, Crassoretitricolporites vanraadshooveni, Multiaerollites fomorsus, Stereisporites sp, Cyperaceoporites sp, Nympheapollis lotus, Podocarpus milanjianus, and Retistephanocolpites gracilis, and marine forms Dinoflagellate cyst, Selenopemphix sp, Operculodinium sp, Brigantedinium sp, and Lingulodinium sp. In this study, the first and last appearance datum (FAD and LAD) of diagnostic marker specie Podocarpus milanjianus was used to assign Early Pliocene – Late Pliocene age to the well. In addition, the integration of terrestrial and marine forms revealed that the sediments were deposited in shallow marine environments (Upper to Lower shoreface).
Keywords
Lithostratigraphy, Stratigraphy, Palynology, Niger Delta)
Citations
IRE Journals:
Victoria Okereke, Onema Adojoh "Palynological Appraisal of the Pliocene Sediments: Chronological and Lithofacies Insights from X-Well, Offshore Setting of the Niger Delta" Iconic Research And Engineering Journals Volume 6 Issue 8 2023 Page 405-410 https://doi.org/10.64388/IREV6I8-1712046
IEEE:
Victoria Okereke, Onema Adojoh
"Palynological Appraisal of the Pliocene Sediments: Chronological and Lithofacies Insights from X-Well, Offshore Setting of the Niger Delta" Iconic Research And Engineering Journals, 6(8) https://doi.org/10.64388/IREV6I8-1712046
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