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Characteristic Magnetic Behavior of Southwest Nigerian Granitoids

  • Cyril OkpoliEmail author
  • Michael Oladunjoye
  • Emilio Herrero-Bervera
Chapter
Part of the Advances in Science, Technology & Innovation book series (ASTI)

Abstract

The present work constitutes a primary initiative whereby the initially achieved results are released, following a detailed regional thermomagnetic study of granitoids from the Precambrian basement rocks of southwestern Nigeria. In this respect, a selection of multifunctional kappabridge (MFK1-FA), Scanning electron microscope, alternating field demagnetizer, spinner magnetometer, vibrating sample magnetometer have been applied to characterize the basement rocks relating magnetic behavior. Standard samples have been prepared using 2.5 cm by 2.1 cm, in the form of cylindrical cores, to depict the relevant paleomagnetic character, while polished samples and grains/powder have been applied for mineralogical characterization purposes. The reached results prove to reveal the stability attached to the representative samples, along with the dominance of PSD/MD magnetic domain state with regard to the magnetite polymorphs.

Keywords

Thermomagnetic Granitoids Maghemites Precambrian Nigeria 

References

  1. 1.
    Clark, D.A.: Magnetic petrophysics and magnetic petrography: aids to geological interpretation of magnetic surveys. J. Aust. Geol. Geophys. 17, 83–103 (1997)Google Scholar
  2. 2.
    Daly, M.C., Lawrence, S.R., Diemu-Tshiband, K., Matouana, B.: Tectonic evolu-tion of the Cuvette Centrale, Zaire. J. Geol. Soc. 149(4), 539–546 (1992)CrossRefGoogle Scholar
  3. 3.
    Pariso, J.E., Stokking, L., Allerton, S.: Rock magnetism and magnetic mineralogy of a 1-km section of sheeted dikes, hole 504B, Proc. Ocean Drill. Program Sci. Results, 137/140, 253–262 (1995)Google Scholar
  4. 4.
    Miller, C.F., Wooden, J.L.: Anatexis, hybridization and the modification of ancient crust: Mesozoic plutonism in the old woman mountain area, California. Lithos 32, 111–133 (1994)CrossRefGoogle Scholar
  5. 5.
    Zhou, W., Van der Voo, R., Peacor, D.R., Zhang, Y.: Vari-able Ti-content and grain size of titanomagnetite as a func-tion of cooling rate in very young MORB. Earth Planet. Sci. Lett. 179, 9–20 (2000)CrossRefGoogle Scholar
  6. 6.
    Pick, T., Tauxe, L.: Characteristics of magnetite in submar-ine basaltic glass. Geophys. J. Int. 119, 116–128 (1994)CrossRefGoogle Scholar
  7. 7.
    Dunlop, D.J., Özdemir, Ö.: Rock magnetism: fundamentals and frontiers. Cambridge University Press, New York/London/Cambridge, 573 pp (1997)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Cyril Okpoli
    • 1
    Email author
  • Michael Oladunjoye
    • 2
  • Emilio Herrero-Bervera
    • 3
  1. 1.Department of Earth SciencesFaculty of Science, Adekunle Ajasin UniversityAkungba-AkokoNigeria
  2. 2.Department of GeologyUniversity of IbadanIbadanNigeria
  3. 3.Paleomagnetics and Petrofabrics LaboratorySchool of Ocean & Earth Science & Technology (SOEST), Hawaii Institute of Geophysics and Planetology (HIGP)HonoluluUSA

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