[
Abdulkadir, T.A. & Abdullatif, O.M., 2013. Facies, depositional environments, reservoir potential and palaeogeography of the Cambro-Ordovician Dibsiyah Formation, Wajid outcrop belt, Saudi Arabia. Arabian Journal Science and Engineering 38, 1785–1806.
]Search in Google Scholar
[
Adeoye, M.O., Ndeze, C.K., Akande, S.O. & Ojo, O.J., 2016. Petrographic facies evaluation, provenance and depositional environment of the Oligocene – Miocene Ogwashi-Asaba Formation, southern Anambra Basin. Journal of Mining and Geology 52, 1–18.
]Search in Google Scholar
[
Arua, I., 1986. Paleoenvironment of Eocene deposits in the Afikpo syncline, southern Nigeria. Journal of African Earth Sciences 5, 279–284.
]Search in Google Scholar
[
Barudžija, U., Velić, J., Malvić, T., Trenc, N. & Božinović, N.M., 2020. Morphometric Characteristics, Shapes and Provenance of Holocene Pebbles from the Sava River Gravels (Zagreb, Croatia). Geosciences 10, 1–21.
]Search in Google Scholar
[
Bluck, B.J., 1967. Sedimentation of beach gravels: examples from South Wales. Journal of Sedimentary Petrology 37, 128–156.
]Search in Google Scholar
[
Brush, L.M., 1961. Drainage basins, channels, and flow characteristics of selected streams in Central Pennsylvania. U.S. Government Printing Office, pp. 145–181.
]Search in Google Scholar
[
Dobkins, J.E. & Folk, R.L., 1970. Shape development in Tahiti Nui. Journal of Sedimentary Petrology 40, 1167–1203.
]Search in Google Scholar
[
Ejeh, O.I., Akpoborie, I.A. & Etobro, A.A.I., 2015. Depositional setting of sandstones from the Oligocene-Miocene Ogwashi-Asaba Formation, Niger Delta Basin, Nigeria: Evidence from grain size analysis and geo-chemistry. Universal Journal of Geoscience 3, 71–82.
]Search in Google Scholar
[
Ekwenye, O.C. & Nichols, G.J., 2016. Depositional facies and ichnology of a tidally influenced coastal plain deposit: the Ogwashi Formation, Niger Delta Basin. Arabian Journal of Geosciences 9, 1–27.
]Search in Google Scholar
[
Ekwenye, O.C., Nichols, G. & Mode, A.W., 2015. Sedimentary petrology and provenance interpretation of the sandstone lithofacies of the Paleogene strata, south-eastern Nigeria. Journal of African Earth Sciences 109, 239–262.
]Search in Google Scholar
[
Elfrink, B. & Baldock, T. 2002. Hydrodynamics and sediment transport in the swash zone: a review and perspectives. Coast Engineering 45, 149–167.
]Search in Google Scholar
[
Els, B.G., 1988. Pebble morphology of an ancient conglomerate: the Middelvlei gold placer, Witwaters-rand, South Africa. Journal of Sedimentary Petrology 58, 894–901.
]Search in Google Scholar
[
Gale, S.J., 1990. The shape of beach gravels. Journal of Sedimentary Petrology 60, 787–789.
]Search in Google Scholar
[
Gale, S.J. 2021. The shape of fluvial gravels: Insights from Fiji’s Sabeto River. Geosciences 11, 161.
]Search in Google Scholar
[
Hubert, F.L., 1968. Selection and wear of pebbles on gravel beaches. University of Groningen Geological Institute Publication, 190, 144 pp.
]Search in Google Scholar
[
Illenberger, W.K., 1991. Pebble shape (and size). Journal of Sedimentary Petrology 61, 756–767.
]Search in Google Scholar
[
Kogbe, C.A., 1976. The continental intercalaire in northwestern Nigeria. Journal of Mining and Geology 13, 45–50.
]Search in Google Scholar
[
Lewis, D.W. & McConchie, D., 1994. Analytical sedimentology. Earth Science, Springer, 206 pp.
]Search in Google Scholar
[
Lutig, G., 1962. The shape of pebbles in the continental, fluviatile and marine facies. International Association of Science Hydrology 59, 253–258.
]Search in Google Scholar
[
Madi, K. & Ndlazi, N.Z., 2020. Pebble morphometric analysis as signatures of the fluvial depositional environment of the Katberg Formation near Kwerela River around East London, Eastern Cape Province, South Africa. Arabian Journal of Geoscience 13, 235.
]Search in Google Scholar
[
Madukwe, Y. & Bassey, E., 2015. Geochemistry of the Ogwashi-Asaba Formation, Anambra Basin, Nigeria: Implications for provenance, tectonic setting, source area weathering, classification and maturity. International Journal of Science and Technology 4, 312–327.
]Search in Google Scholar
[
Murat, R.C., 1972. Stratigraphy and paleogeography of the Cretaceous and lower Tertiary in southern Nigeria. [In:] T.F.J. Dessauvagie & A.J. Whiteman (Eds): African Geology, University of Ibadan Press, Nigeria, pp. 251–266.
]Search in Google Scholar
[
Nichols, G., 2009. Sedimentology and stratigraphy. Blackwell Scientific Publications, Oxford, 419 pp.
]Search in Google Scholar
[
Nton, M.E. & Adamolekun, O.J., 2016. Sedimentological and geochemical characteristics of outcrop sediments of Southern Bida Basin, Central Nigeria: implications for provenance, paleoenvironment and tectonic history. Ife Journal of Science 18, 345–369.
]Search in Google Scholar
[
Nwajide, C.S., 1980. Eocene tidal sedimentation in the Anambra Basin, Southern Nigeria. Sedimentology Geology 25, 189–207.
]Search in Google Scholar
[
Nwajide, C.S., 2006. Anambra Basin of Nigeria: synoptic basin analysis as a basis for evaluating its hydrocarbon prospectivity. [In:] C.O. Okogbue (Ed.): Hydrocarbon potentials of the Anambra Basin: Geology, geochemistry and geohistory perspectives. Proceedings of 1st seminar organized by Petroleum Technology Development Fund Chair in Geology, University of Nigeria, Nsukka, pp. 1–46.
]Search in Google Scholar
[
Nwajide, C.S., 2013. Geology of Nigeria’s sedimentary basins. CSS Bookshops, Lagos, Nigeria, 565 pp.
]Search in Google Scholar
[
Nwajide, C.S. & Hoque, M., 1982. Pebble morphometry as an aid in environmental diagnosis: an example from the Middle Benue Trough. Journal of Mining and Geology 19, 114–120.
]Search in Google Scholar
[
Ocheli, A., Okoro, A.U., Ogbe, O.B. & Aigbadon, G.O., 2018. Granulometric and pebble morphometric applications to Benin Flank sediments in western Anambra Basin, Nigeria: proxies for paleoenvironmental reconstruction. Environmental Monitoring and Assessment 190, 1–17.
]Search in Google Scholar
[
Odumodu, C.F.R. & Israel, H.O., 2014. Pebble form indices as paleoenvironmental reconstruction tools for the Ogwashi–Asaba Formation, southeastern Nigeria. International Journal of Geology, Earth & Environmental Sciences 4, 149–159.
]Search in Google Scholar
[
Ogala, J.E., 2012. The geochemistry of lignite from the Neogene Ogwashi-Asaba Formation, Niger Delta Basin, southern Nigeria. Earth Sciences Research Journal 16, 151–164.
]Search in Google Scholar
[
Ogala, J.E., Adaikpoh, E.O, Omo-Irabor, O.O. & Onotu, R.U., 2010. Granulometric analysis and pebble morphometric studies as indicators of depositional environments of the sandstone facies around Okanyan and environs in the Benin Formation, Southwestern Nigeria. World Applied Sciences Journal 11, 245–255.
]Search in Google Scholar
[
Ogbe, O.B., 2021. Reservoir sandstone grain-size distributions: Implications for sequence stratigraphic and reservoir depositional modelling in Otovwe field, on-shore Niger Delta Basin, Nigeria. Journal of Petroleum Science and Engineering 203, 108639.
]Search in Google Scholar
[
Ogbe, O.B. & Osokpor, J., 2021. Depositional facies, sequence stratigraphy and reservoir potential of the Eocene Nanka Formation of the Ameki Group in agu-Awka and Umunya, southeast Nigeria. Heliyon Elsevier 7, e05846.
]Search in Google Scholar
[
Okoro, A.U., Onuigbo, E.N., Akpononu, E.O. & Obiadi, I.I., 2012. Lithofacies and pebble morphogenesis: keys to paleoenvironmental interpretation of the Nkporo Formation, Afikpo Sub-Basin, Nigeria. Journal of Environment and Earth Science 2, 26–37.
]Search in Google Scholar
[
Olugbenro, R. & Nwajide, C.S., 1997. Grain size distribution and particle morphogenesis as signatures of depositional environments of Cretaceous (non-ferruginous) facies in the Bida Basin, Nigeria. Journal of Mining and Geology 33, 89–101.
]Search in Google Scholar
[
Oluwajana, A.O., Ugwueze, C.U., Ogbe, O.B. & Egunjobi, K.J., 2021. Pebble morphogenesis of the Cretaceous conglomerates from the Abeokuta Formation near the Oluwa River, Eastern Dahomey Basin, Southwestern Nigeria. Mining-Geology-Petroleum Engineering Bulletin 36, 93–104.
]Search in Google Scholar
[
Onyemesili, O.C. & Odumodu, C.F.R., 2019. Pebble morphometric study of the Ogwashi-Asaba Formation at Ubakala and environs in Southeastern Nigeria. Journal of Natural Sciences Research 9, 36–50.
]Search in Google Scholar
[
Osokpor, J. & Ogbe, O.B., 2019. Sequence stratigraphic signatures from Xen-1 well: key for understanding Cretaceous–Tertiary transitional events in the northwestern Niger Delta Basin, Nigeria. Petroleum and Coal 61, 860–880.
]Search in Google Scholar
[
Overare, B. & Osokpor, J., 2020. Providing clues on the paleo-weathering of Ogwashi-Asaba Formation, Niger Delta Basin: Evidence from geochemistry. Tropical Journal of Science and Technology 1, 74–92.
]Search in Google Scholar
[
Petters, S.W., 1991. Regional geology of Africa. Lecture Notes in Earth Sciences. Springer-Verlag, Berlin, 743 pp.
]Search in Google Scholar
[
Reyment, R.A., 1965. Aspects of the geology of Nigeria: The stratigraphy of the Cretaceous and Cenozoic deposits. Ibadan University Press, Ibadan, Nigeria, 145 pp.
]Search in Google Scholar
[
Sames, C.W., 1966. Morphometric data of some recent pebble associations and their application to ancient deposits. Journal of Sedimentary Petrology 36, 125–142.
]Search in Google Scholar
[
Short, K.C. & Stauble, A.J., 1967. Outline of geology of Niger Delta. American Association of Petroleum Geologist Bulletin 51, 761–779.
]Search in Google Scholar
[
Simpson, A., 1955. The Nigerian coalfield. The geology of parts of Onitsha, Owerri and Benue provinces. Geological Survey of Nigerian Bulletin, 24, 85 pp.
]Search in Google Scholar
[
Sneed, E.D. & Folk, R.L., 1958. Pebbles in the lower Colorado River, Texas: a study in particles morphogenesis. Journal of Geology 66, 114–150.
]Search in Google Scholar
[
Sremac, J., Velić, J., Bošnjak, M., Velić, I., Kudrnovski, D. & Troskot-Čorbić, T., 2018. Depositional model, pebble provenance and possible reservoir potential of Cretaceous conglomerates: Example from the southern slope of Medvednica Mt. (Northern Croatia). Geosciences 8, 456.
]Search in Google Scholar
[
Stratten, T., 1974. Notes on the application of shape parameters to differentiate between beach and river deposits in southern Africa. Transactions Geological Society of South Africa 77, 59–64.
]Search in Google Scholar
[
Tankard, A.J, Martin, K.A., Eriksson, D.K., Hobday, K.A., Hunter, D.R. & Minter, W.E.L., 1982. Crustal evolution of southern Africa: 3.8 billion years of earth history. Springer-Verlag, Heidelberg, 523 pp.
]Search in Google Scholar
[
Tattam, C.M., 1944. A review of Nigerian stratigraphy. Report of Geological Survey of Nigeria (1943), 27–46.
]Search in Google Scholar
[
Widera, M., 2010. The morphology of fossil pebbles as a tool for determining their transport processes. Annales Societatis Geologorum Poloniae 80, 315–325.
]Search in Google Scholar
[
Wilcock, D.N., 1971. Investigation into the relations between bedload transport and channel shape. Geological Society of America Bulletin 82, 2159–2176.
]Search in Google Scholar
