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A Note on the Youngest Beds of the Southern Province of Nigeria
Published online by Cambridge University Press: 01 May 2009
Extract
The Colonial Office Report on the work of the Mineral Survey of Southern Nigeria for 1905–6 gave a few details on the occurrence of bitumen in Ijebu and a paper by Mr. R. Bullen Newton published in the Ann. and Mag. of Nat. Hist., Section 8, VIII, pp. 193–208, described some mollusca which fortunately were preserved in one or two of the shallow boreholes put down to afford information on the beds then named the “Ijebu Series”. No details of the beds passed through were, however, published, and the following note is intended to supplement the Report mentioned.
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References
page 350 note 1 The word “shell” is used in the geological, not in the driller's sense.
page 352 note 1 In regard to the south boundary of the crystalline rocks a fine biotitegranite occurs about 7 miles south of Odigbo, followed in a north direction by banded gneiss with occasional garnets and pegmatites. Near the Owanna River, west of Onishave, are porphyritic and grey micaceous granites with others approaching syenites in composition.