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Petrography and Geochemical Characterization of the Neoproterozoic Migmatites Around Mararraban Liman Katagum, Bauchi Nigeria

Yıl 2022, Cilt: 4 Sayı: 2, 271 - 293, 04.07.2022

Öz

The migmatitic rocks exposed around Mararraban Liman Katagum, Bauchi Nigeria were studied with a view to determine the Geology, petrography, geochemistry and morphology. The area has various morphological units of migmatites. metatexites occurring as patchy metatexite, diatexites as melanocratic diatexite, mesocratic and leucocratic diatexite. They have various flow structures of ptygmatitic folding that are induced by magmatic flow and this morphological forms of migmatite are associated with one another. Petrographic analysis shows metamorphic mineral assemblage comprises of quartz + plagioclase + biotite ± Microcline ± Muscovite ± orthopyroxene ± silliminite ± garnet ± accessory minerals and a typical abundance of quartz and biotite. The presence of metamorphic optical properties such as undulous extinction in quartz and obliteration of twinning in feldspar, and microstructure such as mymerkite, perthite indicate the rocks were subjected to pressure and temperature, and that partial melting is the main process that form the different suites of migmatitic rocks of the study area. Geochemically, a slight inverse correlation between SiO2 and few elements is observed. This suggests that the classic model of fractional crystallization is not the principal process influencing the lithological diversity but partial melting in which the correlation patterns are controlled by the geochemistry of the solid phases been added to the melt. Various models were used to determine the ancestry of the migmatite in the study area. In all the plots the migmatite fell within sedimentary/ metasedimentary field which suggests that the protolith of the migmatite are of sedimentary or metasedimentary rocks.

Kaynakça

  • Abaa, S.I., 1983. The structure and petrography of alkaline rocks of the Mada Younger Granite Complex, Nigeria. Jounal of African Earth Science 3, 107-113.
  • Ajibade, A.C., Fitches, W.R., Wright, J.B., 1979. The Zungeru mylonites, Nigeria: recognition of amajor unit. Revue de Géologie et Géographie Physique 21, 359-363.
  • Ajibade, A.C., Wright, J.B., 1989. The Togo–Benin–Nigeria Shield: Evidence of crustal aggregation in the Panafrican Belt. Journal of Tectonophysics 165, 125-129.
  • Ball, E., 1980. An example of very consistent brittle deformation over a wide intra- continental area: the late Pan-African fracture system of the Tuareg and Nigerian shield. Tectonophys 61, 363-379.
  • Barley, M.E., Eisenlohr, B.N., Groves, D.I., Perring, C.S., Vearncombe, J.R., 1989. Late Archaean convergent margin tectonics and gold mineralization: a new look at the NorsemanWilunaBelt, Western Australia. Geology 17, 826-829.
Yıl 2022, Cilt: 4 Sayı: 2, 271 - 293, 04.07.2022

Öz

Kaynakça

  • Abaa, S.I., 1983. The structure and petrography of alkaline rocks of the Mada Younger Granite Complex, Nigeria. Jounal of African Earth Science 3, 107-113.
  • Ajibade, A.C., Fitches, W.R., Wright, J.B., 1979. The Zungeru mylonites, Nigeria: recognition of amajor unit. Revue de Géologie et Géographie Physique 21, 359-363.
  • Ajibade, A.C., Wright, J.B., 1989. The Togo–Benin–Nigeria Shield: Evidence of crustal aggregation in the Panafrican Belt. Journal of Tectonophysics 165, 125-129.
  • Ball, E., 1980. An example of very consistent brittle deformation over a wide intra- continental area: the late Pan-African fracture system of the Tuareg and Nigerian shield. Tectonophys 61, 363-379.
  • Barley, M.E., Eisenlohr, B.N., Groves, D.I., Perring, C.S., Vearncombe, J.R., 1989. Late Archaean convergent margin tectonics and gold mineralization: a new look at the NorsemanWilunaBelt, Western Australia. Geology 17, 826-829.
Toplam 5 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Konular Yer Bilimleri ve Jeoloji Mühendisliği (Diğer)
Bölüm Research Article
Yazarlar

Tahir Garba Ahmad Bu kişi benim

Ahmed Isah Haruna Bu kişi benim

Faisal Abdullahı Bu kişi benim

Fatima Ibrahim Maıkore Bu kişi benim

Yayımlanma Tarihi 4 Temmuz 2022
Yayımlandığı Sayı Yıl 2022 Cilt: 4 Sayı: 2

Kaynak Göster

AMA Ahmad TG, Haruna AI, Abdullahı F, Maıkore FI. Petrography and Geochemical Characterization of the Neoproterozoic Migmatites Around Mararraban Liman Katagum, Bauchi Nigeria. IJESKA. Temmuz 2022;4(2):271-293.