Taxonomic Notes on Marker Planktonic Foraminifera of Tomboy Field, Offshore Western Niger Delta, Nigeria

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Author(s) S. O. Obaje | E. A. Okosun
Pages 622-627
Volume 2
Issue 9
Date September, 2013
Keywords Taxonomic notes, planktonic foraminifera, Tomboy Field, western Niger Delta, Nigeria

The aim of the study is to identify and record the taxonomic notes on marker planktonic foraminifera in the study area. The area of study is located in the Tomboy field of the offshore western Niger Delta area of Nigeria. In all, 550 ditch cuttings samples were retrieved at 18.29 meter intervals from the five wells studied (TMB-1, TMB-2, TMB-4, TMB-5 and TMB-6), respectively. The standard micropaleontological preparation technique for foraminiferal samples was employed. The unwashed ditch cutting samples were initially rinsed to remove drilling mud and then dried. Twenty grams of each dried sample was soaked for four hours in kerosene and then detergent solution water overnight. The disaggregated samples were then washed under running faucet water over a 63 μm sieve mesh. The washed residues were then dried over a hot electric plate, and then sieved into three size portions: coarse, medium and fine. They were then put in labelled sample bags. Their foraminiferal contents were then identified under binocular microscope and recorded. Sixteen marker planktonic foraminifera species were identified and their taxonomic notes were documented accordingly.

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