Palynostratigraphy and Palaeoenvironmental Interpretation of AA-1 Well, 4329-5892 Feet, Niger Delta Basin, Nigeria


  •   Tejumade Adenike Owoeye


Twenty ditch cutting samples composited and prepared at 80 ft from interval 4329 to 5892 ft of AA-1 Well in the Niger Delta Basin, Nigeria was studied and analyzed through the use of palynoflora assemblage of important diagnostic palynomorphs as well as their stratigraphic distribution with respect to a reference zonation scheme. This is to unravel the biostratigraphic and palaeoenvironmental reconstruction of the studied section. A total of 226 palynomorph species were identified of which 31 represent spores, 153 pollen, 22 dinoflagellate cysts, 13 fungal spores while 7 are microforaminifera test wall linings. The diagnostic forms recovered permitted the zonation and dating of the analyzed section. The result of the section has been broadly assigned to the P520, P480 and P470 palynological zones. The upper boundary of P520 subzone was cautiously placed at 4300 ft, the depth of the first sample analyzed while its base is marked by Last Downhole Occurrence of Racemonocolpites hians at 4800 ft. Important species in this subzone are Racemonocolpites hians Retitricolporites irregularis, Verrutricolporites usmensis, Psilatricolporites crassus, Monoporites annulatus, Praedapollis flexibillis and Striatopollis catatumbus. The top of P480 is marked by base occurrence of Racemonocolpites hians at 4800 ft while the base is defined by the base occurrence of Cinctiporipollis mulleri at 5200 ft. The diagnostic species within this subzone are Proxapertites cursus, Spinizonocostites echinatus, Grimsdalea polygonalis, Polypodiaceiosporites gracillimus and Gemmamonoporites sp. The top of P470 is marked by the base occurrence of Cinctiporipollis mulleri at depth of 5200 ft which is the top occurrence of Verrutricolporites usmensis, while the base is tentatively placed 6000 ft. The diagnostic palynomorphs in this subzone are Psilatricolporites crassus, Striatopollis catatumbus, Retitricolporites irregularis, Retibrevitricolporites protrudens and Verrutricolporites usmensis. Based on the result from palynostratigraphy of the studied section, the Well interval has been dated Late Eocene to Early Oligocene. The depositional environment deciphered in this study range from transitional inner to outer neritic marine.


Hyde HA, Williams DW. The Right word. Pollen Analysis Circular no. 8, 1944; p.6.

Erdtman G. Handbook of Palynology – An Introduction to the Study of Pollen Grains and Spores. Munksgaard, Copenhagen: 1969; 486p.

Traverse A. Plant evolution dances to a different beat. Plant and animal evolutionary mechanisms compared. Historical Biology, 1988;1:227–301.

Sowunmi MA. Palynological studies in the Niger Delta. In: Alagoa E. J., Anozie F. N. and Nzewunwa N. (Eds.). The Early History of the Niger Delta, Helmat Buske, Veriag Hamburg, United Kingdom, 1987:29–59.

Germeraad JH, Hopping CA, Muller J. Palynology of Tertiary sediments from tropical areas. Revised Paleobotany and Palynology, 1968:189–343.

Biffi U, Grignani D. Peridinoiddinoflagellates cysts from the Oligocene of the Niger Delta, Nigeria. Micropaleontology,1983:132–133.

Osokpor J, Lucas FA, Omawumi JO, Brume O, Elijah IO, Avwenagha OE. Palynozonation and Lithofacies Cycles of Paleogene to Neogene Age Sediments in PML-1 Well, Northern Niger Delta Basin. The Pacific Journal of Science and Technology, 2015;16(2):286–298. https://doi:10.13140/RG.2.2.20210.81606.

Igbinigie NS, Ogbamikhumi A. Palynological Studies of Late Eocene to Early Oligocene Sediments, Deb-1 Well, Northern Delta Depobelt, Niger Delta Basin. Trends in Science & Technology Journal. www.ftstjournal.Com E-Issn: 24085162; P-Issn: 20485170; 2021; 6(2): 565–570.

Owoeye TA, Bassey CE, Harry TA, Asuaiko ER, Ibanga VE. Palynostratigraphy and Palaeoenvironmental Interpretation of Outcrop Formations in Parts of Ini-Akwa Ibom State, Southeastern Niger Delta Basin, Nigeria. European Journal of Environment and Earth Sciences, 2022; 3(2), 80–88.

Whiteman AJ. Nigeria, its Petroleum Geology, Resources, and Potential. 1st Edn., Graham and Trotman Ltd., London, ISBN: 0860102645; 1982:394.

Frankyl EJ, Cordry EA. The Niger Delta Oil Province-recent developments onshore and offshore proc. 7th world Petroleum Congress, Mexico City 1B. 1967:195–209.

Short KC, Stauble AJ. Outline of Geology of Niger Delta. Bulletin of American Association of Petroleum Geologists, 1967;51(5):761-779.

Avbovbo AA. Tertiary lithostratigraphy of Niger Delta. American Association of Petroleum Geologists Bulletin, 1978;62(2):295–300.

Doust H, Omatsola E. Niger Delta, In: Edwards JD, Santogrossi PA. eds., Divergent/passive Margin Basins, AAPG Memoir 48: Tulsa, American Association of Petroleum Geologists,1990:239–248.

Faegri K, Iversen J. Textbook of Pollen Analysis, Faegri K, Kaland PEK. 4th Edition, New York, John Wiley and Sons. 1989:423–425.

Wood GD, Gabriel AM, Lawson JC. Palynological techniques-processing and microscopy. In: Jansonius J., McGregor V., editors. Palynology: Principles and Applications. American Association of Stratigraphic Palynologists Foundation, Dallas, 1: 1996:29–50.

Gonzalez Guzman AE. A palynological study on the Upper Los Guervos and Mirador Formations (Lower and Middle Eocene; Tibu area, Colombia): E. J. Brill, Leiden, 1967:1–25.

Adegoke OS, Jan du Chene RE, Agumanu AE, Ajayi PO. Palynology and Age of Kerri-Kerri Formation, Nigeria: Revista Espanola de Micropaleotologia,1978;2:267–283.

Legoux O. Quelquesespeces de pollen caracteristiques du Neogene du Nigeria. Bull. Cent. Rech.Explor. - Prod. Elf-Aquitane, 1978; 2(2): 265–317.

Salami MB. Upper Senonian and Lower Tertiary pollen grains from the Southern Nigeria Sedimentary Basin. Revista Espanola de Micropaleontologia,1983;25: 5–26.

Sowunmi MA. Botanical Affinities of Niger Delta Sporomorphs; Final Report. Unpublished report of a study of Niger Delta sporomorphs, undertaken for the Shell petroleum Development Company (SPDC), 1995b:1–-80

Evamy DD, Harenboure J, Kemerling P, Knaap WA, Mally FA, Rowlands PH. Hydrocarbon habitat of Tertiary Niger Delta. American Association of Petroleum Geologists’ Bulletin, 1978;62:1–39.

Jarzen DM, Elsik WC. New species of the Late Cenozoic fungal form-genus mediaverrunites. American Association of Stratigraphic Palynologists, Taylor & Francis, Ltd. Palynology, 1986;33(2).

Takahashi K, Jux U. Palynology of Middle Tertiary lacustrine deposits from the Jos Plateau, Nigeria. Bull. Faculty of Liberal Arts, Nagasaki University, Japan. (Natural Sciences), 1989;29(2):181–367.

Jarzen DM, Nichols DJ. Pollen. In: Jansonius J, McGregor DC. (Eds.), Palynology: Principles and Applications, vol. 1. American Association of Stratigraphic Palynologists, Dallas, TX. 1996:261–291.

Jansonius J, Kalgutkar RM. Synopsis of fossil fungal spores, mycelia & fructifications. American Association of Stratigraphic Palynologists Foundation Contribution Series No. 39, 2000:1–429.

Umeji OP. Palynological data from the road section at the Ogbunike Toll-gate, Onitsha, southeastern Nigeria. Journal of Mining and Geology. 2003;39(2):95–102.

Oloto IN. Field Geology and Cretaceous-tertiary Scenic Landforms: Case Study of Enugu- Port Harcourt Axis, South Benue Trough, Nigeria. Research Book Series in Geology. Legal Integrated Nigeria Ltd. ISBN: 13978-978-49898-55; 2010; 240 pp.

Lucas FA, Ishiekwene E. Dinoflagellate cysts biozonation model for Late Cretaceous –Tertiary succession of Gbekebo-l Well, Benin Flank, Anambra Basin Nigeria. World Journal of Applied Science and Technology. 2010b;2(3):309–314.

Durugbo EU. Palynostratigraphy, Age determination and Depositional Environments of the Imo Shale Exposures at the Okigwe/Port Harcourt Express Road Junction Okigwe, Southeastern Nigeria. Greener Journal of Physical Sciences, 2013;3(7):255–272.

Ikegwuonu ON. Middle Paleocene to Early Miocene Palynostratigraphy of Sediments in Bende-Umuahia Area, Niger Delta, Basin, Southern Nigeria. Unpublished M.Sc. Thesis, Department of Geology, University of Nigeria Nsukka, 2015;205p.

Potonie R, Gelletich JU. Pteridophyten-sporen einer eözaner Braunkohle aus Dorog in Ungarn. S.B. Berlinische Gesellschaft Naturforschender Freunde, 1933;33:517–526.

Potonie R. Synopsis der Gattungen der sporae dispesae I. Geol. Jahrb. Beih, 1956;23:1–9.

Cookson IC, Pike KM. Some dicotyledonous pollen type from Cenozoic deposits in the Australian region. Australian Journal of Botany, 1947;2:197–219.

Salard-Cheboldaeff M. Grains de pollen Tertaires du Cameroun rapports a la famille des Bombacacees: Comptes rendus du 100e congres national des national des societies savants, 1975;81:359–367.

Nagy E. Occurrence of the Genus Ephedrites in the Neogene of Hungary. Ghana Palynologica, 1969;4:277–280.

Salard-Cheboldaeff M. Maastrichtian and Tertiary palaeoflore of the coastal sedimentary basin of Cameroon. Pollen et Spores. 1972;16:499–506.

Ibrahim B. Sporenformen des Aegirhorizonts des Rubrvrviers. Konrad Triltsch, Wurzburg, 1993;46:8.

Van der hammen. El desarrollo de la flora Micropaleontol. Columbiaus en los perindos geologieos, 1956;29:61–83.

Iversen J, Troels-Smith J. Pollen morfogiske definitioner og typer. Danmarks geologiske Undersøgelse, 1950;4(8).

Van der hammen T, Wymstra TA. A Palynological Study of the Tertiary and Upper Cretaceous of British Guiana. Leidse Geologische Medeleingen, 1964; 30: 209–231.

Strivastava SK, Binda PL. Depositional history of the Early Eocene Shumaysi Formation, Saudi Arabia: American Association Stratigraphic Palynologist publication, 1991;15:47–61.

Oboh FE, Salami MB, Chapman JL. Palynological interpretations of the paleoenvironments of Miocene strata of the Well Igbomotoru-1, Niger Delta: Journal of British Micropaleontology Society, 1992;II(part 1):1–5.

Lawal OI. Palynological Investigations of parts of the Tertiary Niger Delta: Unpublished. M.Sc. thesis, University of Ife, Nigeria, 1977:30-46.

Ogbahon OA. Palynological Study of OSE 1 Well in Offshore Niger Delta Basin: Implications for Age, Paleoclimate and Depositional Paleoenvironment. International Journal of Geosciences, 2019;10:860–883.

Adebayo OF, Orijemie AE, Aturamu AO. Palynology of Bog-1 Well, Southeastern Niger Delta Basin, Nigeria; International Journal of Science and Technology, ISSN: 2224-3577; April 2012; 2(4).

Osokpor J, Ogbe OB. Paleodepositional Environment and Reservoir Biosequence Stratigraphy of Late Paleogene-Neogene Sediments from the KB-1 Well, Coastal Swamp Depobelt, Niger Delta Basin, Nigeria; International Journal of Scientific & Engineering Research. ISSN: 2229-5518; June 2020; 11(6), 1742.

Efemena OO, Soronnadi-ononiwu GC, Lucas FA. Palynological Study of Vida-1 Well, Central Niger Delta Basin, Nigeria; American Scientific Research Journal for Engineering, Technology, and Sciences (ASRJETS) ISSN: (Print) 2313-4410, ISSN: (Online) 2313-4402; 2021; 81(1):222–237.


How to Cite
Owoeye, T. A. (2022). Palynostratigraphy and Palaeoenvironmental Interpretation of AA-1 Well, 4329-5892 Feet, Niger Delta Basin, Nigeria. European Journal of Environment and Earth Sciences, 3(5), 11–19.