alexa Neogene Deep Water Agglutinated Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria | OMICS International
ISSN: 2157-7617

Journal of Earth Science & Climatic Change
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Research Article

Neogene Deep Water Agglutinated Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria

Ajayi EO1* and Agboneni OE2

1Bio-Metrics Geo Consult Ltd, Cascurina Close Gaduwa Estate, Abuja, Nigeria

2Department of Geology Federal University of Technology, Minna, Nigeria

*Corresponding Author:
Ajayi EO
Bio-Metrics Geo Consult Ltd
Plot 68 Cascurina Close Gaduwa Estate
Abuja, Nigeria
Tel: 234 803 315 3422
E-mail: [email protected]

Received Date: October 31, 2016; Accepted Date: November 03, 2016; Published Date: November 10, 2016

Citation: Ajayi EO, Agboneni OE (2016) Neogene Deep Water Agglutinated Foraminiferal Biostratigraphy and Biozonation in Niger Delta, Nigeria. J Earth Sci Clim Change 7:371. doi: 10.4172/2157-7617.1000371

Copyright: © 2016 Ajayi EO, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

This study entails the biostratigraphy of benthic agglutinating foraminifera of four wells in the deep water of the Niger Delta. A total of 453 ditch cuttings were analysed for wells A, B, C and D. Eighty-five and 164 ditch cuttings from the intervals of 4900–9920 ft. and 4530–14600 ft. of wells A and well B respectively, while 92 and 112 cuttings from 5760–11400 ft. and 6000–12750 ft. were analysed in wells C and D respectively. These samples were processed and analysed at 60 feet intervals. . The analysed sections of the wells are composed of shale, mudstones and sand deposited in the upper to lower bathyal environments. The agglutinating foraminifera recovered were fairly well preserved. Total foraminifera percentages recovered from wells A, B, C and D wells are 31%, 34%, 24% and 27% respectively. Marker species were identified and used to erect biozones. The following six agglutinated foraminiferal zones beginning from the oldest have been proposed, Eggerella scrabra Taxon Range Zone, and Ammobaculites strathearnensis–Eggerella scabra, Haplophragmoides narivaensis - Eggerella scabra, Cyclammina cancellata–Ammobaculites strathearnensis, Cyclammina complanata–Glomospira gordiales, Cyclammina cf. minima–Ammobaculites strathearnensis Interval Range Zones. The agglutinated foraminifera assemblages were calibrated to the geologic timeframe by means of planktic foraminifera and calcareous nannofossils. The studied wells penetrated a sedimentary succession of Late Miocene to Early Pliocene age. Taxonomic notes on some of the observed species have also been provided.

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