International Journal of Life Science and Engineering
Articles Information
International Journal of Life Science and Engineering, Vol.1, No.1, Mar. 2015, Pub. Date: Mar. 5, 2015
Aspects of Biostratigraphic Analysis of Sediments of the Late Cretaceous Nkporo Formation in Amangwu-Edda, Afikpo Sub-Basin, Southeastern Nigeria
Pages: 7-14 Views: 3328 Downloads: 1818
[01] Aja A. U., Department of Geology, Ebonyi State University, Abakaliki, Nigeria.
[02] Igwe E. O., Department of Geology, Ebonyi State University, Abakaliki, Nigeria.
Amangwu-Edda, lies within the Afikpo Sub-Basin, a sedimentary basin set up during the late Cretaceous period following the Santonian uplift in the southern Benue Trough. Local stratigraphy and field relationship show that the lithologic succession consists of black to dark grey, fossiliferous and gypsiferous shales with subordinate limestone lenses and siltstone. Palynological analysis of the shale samples collected from the surface outcrops in the area yielded a total of 117 palynomorphs, made of 24 pollen species, 9 spore species and 19 dinoflagellate species, while foraminifera biostratigraphic analysis yielded 68 forams. The abundance of the pollen species of Longapertites sp., Monosulcites sp., and Monocolpites marginatus, the spore species of Cyathidites minor, Laevigatosporites sp., along with the dinoflagellate cysts species of Leoisphaeridia sp, Andallusiella sp., and Senegalinium sp, and especially a high abundance of the foraminifera species Bolivina anambra, suggest a nearly late Campanian to Maastrichtian age for the sediments. Based on the distribution of the palynomorph species recovered from the shale samples, the study area has been interpreted as an open marine to estuarine environment at the time of sediment deposition occurring during a period of marine incursion.
Nkporo Shale, Biostratigraphy, Palynology, Foraminifera
[01] Okoro, A.U., Okogbue C.O, Nwajide, C.S., Onuigbo, E.N., (2012). Provenance and Paleogeography of the Nkporo Formation (Late Campanian – Early Maastrichtian) in the Afikpo Sub-Basin, Southeastern Nigeria European Journal of Scientific Research ISSN 1450-216X Vol. 88 No 3, pp.346-364.
[02] Simpson, A. 1954. The Nigerian Coal Field: The geology of parts of Onitsha, Owerri and Benue Provinces. GSN Bull., Vol. 24, 67p.
[03] Omoboriowo, A.O., Soronnadi-Ononiwu, C.G., Awodogan, O.L., (2012). Biostratigraphy of a section along Port-Harcourt to Enugu expressway, exposed at Agbogugu, Anambra Basin, Nigeria. Pelagic Research Library. Advances in Applied Science Research, 3(1): 384-392.
[04] Okoro, A.U., Nwojiji, C.N., Osegbo, F.N., Ndubueze, V.O., (2013). Palynological Analysis of Late Cretaceous Sediments of the Nkporo Formation in the Afikpo Sub-basin, South-east Nigeria. Asian Transactions on Science and Technology 2 (3), 35-46.
[05] Edet, J.J. and Nyong., E.E., (1994). Depositional Environments, Sea-level History and Palaeobiogeography of the Late Campanian- Maastrichtian on the Calabar Flank, Southeast Nigeria. Palaeogeogr. Palaeoclimatol. Palaeoecol. 102: 161-175.
[06] Murat, C., (1972). Stratigraphy and Paleogeography of the Cretaceous and Lower Tertiary in South-Eastern Nigeria. In: Dessauvagie T. F. J., Whiteman A. J. (Eds), African Geology. Ibadan University Press, 1972, pp. 251–266.
[07] Nwajide, C. S and T. J.A., Reijers, 1996. “The geology of the southern Anambra Basin” in Reijers, T.J.A (Ed.) Selected Chapters on Geology: Sedimentary geology and sequence stratigraphy of the Anambra Basin, SPDC Publication, pp.133 – 148.
[08] Igwe, E.O, Edene, E.N, Obasi, P.N., (2013). Petrographic Study of the Sandstones of Eze-Aku Formation (Turonian) in Abaomege, Southern Benue Trough, Nigeria. IOSR Journal of Applied Geology and Geophysics (IOSR-JAGG) e-ISSN: 2321–0990, p-ISSN: 2321–0982.Volume 1, Issue 2 (Jul. –Aug. 2013), PP 16-22
[09] Ola-Buraimo, A.O., Akaegbobi, I.M., (2013). Palynological and Paleoenvironmental Investigation of the Campanian – Lowermost Maastrichtian Asata/Nkporo Shale in the Anambra Basin, Southeast Nigeria. British Journal of Applied Science and Technology, 3(4): 888-915.
[10] Lawal O. and Moullade M., (1986). Palynological Biostratigraphy of the Cretaceous Sediments in the Benue Basin, N.E. Nigeria. Rev. Micropaleontol., 29:1, 61-83.
[11] Yikarebogha, Y., Oloto, I.N., Soronnadi-Ononiwu, G.C., Omoboriowo, A.O., (2013). Palynological Studies of Upper Cretaceous Succession of Mbeji – 1 Well, Central Chad Basin, Northeast Nigeria. International Journal of Science Emerging Technology, Volume 5, No.4:264-273.
[12] Umeji, O.P., (2006). Palynological Evidence for the Turonian/Campanian Boundary Between the Abakaliki and Anambra Basin. Journal of Nigerian Mining and Geology Society, 42 (2), 141-155.
[13] Petters, S.W., Edet, J.J., (1996). Shallow shelf and anoxic facies in late Campanian to early Maastrichtian of Southwestern Nigeria.Geologiede’l Afrique et de L’ Atlantique sud: Actes colloques Angers. Pp 219-233.
[14] Petters, S.W., (1979). Paralic Arenaceous Foraminifera from the Upper Cretaceous of the Benue Trough, Nigeria. Acta Paleont. Polonica 24(4):451-471.
[15] Gebhardt et al, (2004). Foraminifera Response to Sea Level Change, Organic Influx and Oxygen Deficiency. Marine Paleontology, Vol 53, Pp. 133-157.
[16] Adeigbe, O.C and Salufu, A. E, (2009). Geology and Depositional Environment of Campano-Maastrichtian Sediments in the Anambra Basin, Southeastern Nigeria: Evidence from Field Relationship and Sedimentological Study.Earth Sci. Res. J. Vol. 13, No.2: 148-166
[17] Murat, R. C. (1972). Stratigraphy and paleogeography of the Cretaceous and Lower Tertiary in southern Nigeria In: T. F. J. Dessauvagie and A. J. Whiteman (Eds). African Geology. University of Ibadan, Nigeria, pp. 201-266.
MA 02210, USA
AIS is an academia-oriented and non-commercial institute aiming at providing users with a way to quickly and easily get the academic and scientific information.
Copyright © 2014 - American Institute of Science except certain content provided by third parties.