Age and origin of the Nigerian mesozoic
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O. Breemen; J. Hutchinson; P. Bowden
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Article
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1975
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Springer
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English
โ 978 KB
Sixty-four Rb-Sr and two K-At isotopic measurements from seven ring complexes in central Nigeria provide evidence for a systematic age trend along a 200 km zone ranging from 1744-5 m.y. in the north to 154-4-4 m.y. in the south. A peak of anorogenie magmatism occurred in the Jos Plateau region about