Sedimentological and Geochemical Characterization of the Cretaceous Strata of Calabar Flank, Southeastern Nigeria

Sedimentological and Geochemical Characterization of the Cretaceous Strata of Calabar Flank, Southeastern Nigeria

Author: 
Boboye, O.A.
Publisher: 
Elsevier
Date published: 
2014
Record type: 
Responsibility: 
Okon, E.E., jt. author
Journal Title: 
Journal of African Earth Sciences
Source: 
Journal of African Earth Sciences, Vol 99, Part 2,November 2014, pp. 427-441
Abstract: 

An integrated sedimentological and geochemical evaluation has been carried out on the Cretaceous sediments of the Calabar Flank. This study is to characterize the provenance, depositional environments and hydrocarbon potentials. The techniques involved field descriptions, textural parameters, petrographic analysis and biostratigraphic studies using standard sedimentological methods. The geochemical studies involved the determination of major oxides and trace elements using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS); Total Organic Carbon (TOC) and Rock Eval Pyrolysis. Results show that sandstone from Awi Formation have elongation ratio ranging from 0.4b to 0.9, oblate-prolate index and maximum sphericity index range from 9.6 to 9.7 and 0.5 to 0.9 respectively. The sandstone units are arkosic and mineralogically immature (MI = 3); ZTR indexes range from 54.6% to 82.5%, with tourmaline, zircon, staurolite, garnet, apatite, augite and rutile grains being angular-sub-angular. This suggests nearness to source, and that Awi Formation was deposited in a fluvial environment.

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CITATION: Boboye, O.A.. Sedimentological and Geochemical Characterization of the Cretaceous Strata of Calabar Flank, Southeastern Nigeria . : Elsevier , 2014. Journal of African Earth Sciences, Vol 99, Part 2,November 2014, pp. 427-441 - Available at: http://library.au.int/sedimentological-and-geochemical-characterization-cretaceous-strata-calabar-flank-southeastern