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Imeokparia, E. G. (1985) Geochemical evolution of the Jarawa Younger Granite complex and its related mineralization, northern Nigeria. Geological Magazine, 122 (2) 163-173 doi:10.1017/s0016756800031071

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Reference TypeJournal (article/letter/editorial)
TitleGeochemical evolution of the Jarawa Younger Granite complex and its related mineralization, northern Nigeria
JournalGeological Magazine
AuthorsImeokparia, E. G.Author
Year1985 (March)Volume122
Issue2
PublisherCambridge University Press (CUP)
DOIdoi:10.1017/s0016756800031071Search in ResearchGate
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Mindat Ref. ID252634Long-form Identifiermindat:1:5:252634:2
GUID0
Full ReferenceImeokparia, E. G. (1985) Geochemical evolution of the Jarawa Younger Granite complex and its related mineralization, northern Nigeria. Geological Magazine, 122 (2) 163-173 doi:10.1017/s0016756800031071
Plain TextImeokparia, E. G. (1985) Geochemical evolution of the Jarawa Younger Granite complex and its related mineralization, northern Nigeria. Geological Magazine, 122 (2) 163-173 doi:10.1017/s0016756800031071
In(1985, March) Geological Magazine Vol. 122 (2) Cambridge University Press (CUP)
Abstract/NotesAbstractThe Jarawa Younger Granite complex is composed of high silica alkali granites that were emplaced 161 Ma ago. The granites are characterized by high contents of Rb, Li, F, Sn, Nb, W above normal low-Ca granitic rocks and have typical S-type characteristics that are indicative of a substantial component of crustal melt.Mineralization in the complex is associated with the biotite granite which was emplaced as a sheet-like body at relatively shallow depth and occurs as disseminations and as greisen lodes and veins.Chemical studies of the granites have shown that the biotite granite represents a highly fractionated rock that crystallized from a residual magma from which the hornblende-biotite granite had previously crystallized. However the biotite granite is characterized by steep gradients in some minor and trace elements that apparently indicate that liquid-state differentiation and/or volatile complexing processes made significant contributions to their differentiation. Enrichment of Th, Li, Rb, Sn, W and Nb may be more closely linked to roofward migration of F.

See Also

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Imeokparia, E. G. (1982) Geochemistry and relationships to mineralization of granitic rocks from the Afu Younger Granite Complex, Central Nigeria. Geological Magazine, 119 (1) 39-56 doi:10.1017/s0016756800025644
Imeokparia, E.G. (1983) Geochemical aspects of the evolution and mineralization of the Amo Younger Granite Complex (northern Nigeria) Chemical Geology, 40 (3) 293-312 doi:10.1016/0009-2541(83)90035-9
Imeokparia, E. G. (1981) Ba/Rb and Rb/Sr ratios as indicators of magmatic fractionation, postmagmatic alteration and mineralization - Afu younger granite complex, northern Nigeria. GEOCHEMICAL JOURNAL, 15 (4) 209-219 doi:10.2343/geochemj.15.209
Ajakaiye, Deborah E. (1968) A gravity interpretation of the Liruei Younger Granite Ring Complex of Northern Nigeria. Geological Magazine, 105 (3) 256-263 doi:10.1017/s0016756800052274
Imeokparia, E.G. (1982) Abundance and distribution of tungsten in the Afu Younger Granite Complex of central Nigeria. Journal of Geochemical Exploration, 17 (2) 93-108 doi:10.1016/0375-6742(82)90027-9
Imeokparia, E. G. (1982) Tin content of biotites from the Afu Younger Granite complex, central Nigeria. Economic Geology, 77 (7) 1710-1724 doi:10.2113/gsecongeo.77.7.1710
Imeokparia, E.G. (1985) Rare-metal mineralization in granitic rocks of the Tongolo Anorogenic Complex β€” Northern Nigeria. Mineralium Deposita, 20 (2) 81-88 doi:10.1007/bf00204314
Webb, P. K. (1974) Roof modification of a high level granite, Jos-Bukuru Younger Granite Ring Complex, Nigeria. Geological Magazine, 111 (1) 43-47 doi:10.1017/s0016756800000431
Imeokparia, Ebo Gab. (1981) Fluorine in biotites from the Afu Younger Granite Complex (central Nigeria) Chemical Geology, 32 (1) 247-254 doi:10.1016/0009-2541(81)90147-9
Thorpe, R. S., Macdonald, R. (1985) Geochemical evidence for the emplacement of the Whin Sill complex of northern England. Geological Magazine, 122 (4) 389-396 doi:10.1017/s0016756800031836
Imeokparia, E. G. (1983). Lithogeochemical dispersion associated with Ririwai zinc-tin lode, Northern Nigeria. Journal of Geochemical Exploration, 19(1-3), 643-661.
 
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