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