Skip to main content
SpringerLink
Log in

The magnetic anisotropy of basalts and its variations under oxidation of titanomagnetites

  • Published:
Studia Geophysica et Geodaetica Aims and scope Submit manuscript

Summary

Using four samples of basaltic rocks from the Bohemian Massif, Nos 201, 202, 206 and 218, the curves of rotational moments in a magnetic field of 4 × 105 A/m were studied as a function of the degree of oxidation of titanomagnetites. The amplitudes of the individual harmonics were determined by harmonic analysis for samples oxidized to various degrees. It was found that the proportion of the harmonic A1 withsin ϑ increases with the degree of oxidation. Simultaneously, the anisotropy of the magnetic susceptibility changes in a field of 60 A/m and the structure changes from linearly parallel to plane parallel.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. V. Kropáček, Z. Pokorná: Magnetische Eigenschaften basischer neovulkanischer Gesteine der Böhmischen Masse und ihre Zusammenhänge mit petrologischen Charakteristiken. Travaux Inst. Géophys. Acad. Tchécosl. Sci. No 406, Geofysikální sborník 1973, Academia, Praha 1975.

    Google Scholar 

  2. V. Kropáček: Kinetics of Oxidation Processes in Titanomagnetities. J. Geoph., 40 (1974), 329.

    Google Scholar 

  3. V. Kropáček: Changes of the Magenetic Susceptibility and Its Anisotropy of Basalts by Oxidation of Titanomagnetites. Studia geoph. et geod., 20 (1976), 178.

    Article  Google Scholar 

  4. V. Kropáček: The Changes of Magnetic Properties of Tertiary Alkali Basalts by Oxidation of Titanomagnetites. Publs. Inst. Geoph. Pol. Acad. Sci., C-1 (1976), 75.

    Google Scholar 

  5. V. Kropáček: The Magnetic Properties of Young Volcanic Rocks of the Bohemian Massif. Publ. Inst. Geoph. Pol. Acad. Sci., C-1 (1976), 65.

    Google Scholar 

  6. В. Кропачек: Магнитная характеристика процесса и продуктов окисления магнитных минералов базальтов. Геомаг. Иссл., No 17 (1976), 59.

  7. V. Jelínek: Precision A. C. Bridge Set for Measuring Magnetic Susceptibility of Rocks and Its Anisotropy. Studia geoph. et geod., 17 (1973), 36.

    Article  Google Scholar 

  8. W. H. Meiklejohn, C. P. Bean: Exchange Anisotropy in CO-CoO. Phys. Rev., 102 (1956), 1413.

    Article  Google Scholar 

  9. W. H. Meiklejohn: Exchange Anisotropy — Rewiev. J. Appl. Phys. Suppl., 33 (1962), 3.

    Article  Google Scholar 

  10. R. Day et al.: Rotational Hysteresis Study of Oxidized Basalts. J. Geoph. Res., 75 (1970), 375.

    Article  Google Scholar 

  11. M. Ozima, H. Kinosita: Magnetic Anisotropy in a Fault Zone. J. Geomag. Geol., 16 (1964), 194.

    Article  Google Scholar 

  12. А. Я. Власовидр.: Обменная анизотропия в гематите и некоторых осадочных породах. Изв. АН СССР, ФЗ, No 10 (1967), 95.

  13. В. А. Агабеков и др.: Обменная анизотропия в естественных титаномагнетитах. Изв. АН СССР, ФЗ, No 7 (1971), 104.

  14. F. Hrouda et al.: The Use of Magnetic Susceptibility Anisotropy for Estimating the Ferromagnetic Mineral Fabrics of Metamorphic Rocks. Geol. Rdsch., 60 (1971), 1124.

    Article  Google Scholar 

  15. F. Janák: Magnetic Susceptibility Anisotropy of Various Rocks Types and Its Significance for Geophysics and Geology. Geoph. Prospect., 20 (1972), 375.

    Article  Google Scholar 

  16. A. J. Manson: Rotational Hysteresis Measurements on Oxidized Synthetic and Natural Titanomagnetites. Z. Geoph., 37 (1971), 431.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Geophysical Institute, Czechosl. Acad. Sci., Prague

    Josef Bochníček & Vladimír Kropáček

Authors
  1. Josef Bochníček
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Vladimír Kropáček
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Bochníček, J., Kropáček, V. The magnetic anisotropy of basalts and its variations under oxidation of titanomagnetites. Stud Geophys Geod 21, 336–342 (1977). https://doi.org/10.1007/BF01613265

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01613265

Keywords

Search

Navigation