The method of anisotropy of magnetic susceptibility: theory and applications. A case study from the Rhodope massif

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Published: Jan 1, 2001
DOI: https://doi.org/10.12681/bgsg.17233
Keywords:
Anisotropy of magnetic susceptibility (AMS) magnetic fabric petrofabric Rhodope Massif
I. ZANANIRI
Aristotle University of Thessaloniki
Abstract

The anisotropy of magnetic susceptibility is a physical property of the rocks widely used in petrofabric studies and other applications. It is based on the measurement of low-field magnetic susceptibility in different directions along the sample. From this process several scalar properties arise, defining the magnitude and symmetry of the AMS ellipsoid, along with the magnetic foliation and lineation, namely the magnetic fabric. A case study is presented, dealing with the deformation of the Mont-Louis-Andorra pluton. Finally, the method was applied in Tertiary magmatic rocks from the Rhodope Massif, revealing their magnetic character and internal structures.

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  • Geophysics
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References
ARCHANJO, C.J., LAUNEAU, R, BOUCHEZ, J.-L., 1994. Magnetic fabric vs. magnetite and biotite shape fabrics of the magnetite-bearing granite plu ton of Gameleiras (Northeast Brazil). Physics of the Earth and Planetary Interiors 89, 63-75.
BALSLEY, J., BUDDINGTON, Α., 1960. Magnetic susceptibility anisotropy and fabric of some Adirondack granites and orthogneisses. American Journal of Science 258A, 6-20.
BHATAL, R.S., 1971. Magnetic Anisotropy in Rocks. Earth-Science Reviews 7, 227-253.
BODIN, J., LEDRU, P., 1986. Nappes hercyniennes précoces a matériel dévonien hétéropique dans les Pyrénées ariégeoises. Comptes Rendus de l'Académie Sciences, Paris, Sér. II, 302, 969-974.
BORRADAILE, G.J., HENRY, B., 1997. Tectonic applications of magnetic susceptibility and its anisotropy. Earth-Science Reviews 42, 49-93.
BOUCHEZ, J.-L., 1997. Granite is never isotropic: an introduction to AMS studies in granitic rocks. In: Bouchez, J.-L., Hutton, D.H.W., Stephens, W.E. (Eds.), Granite: From Segregation of Melt to Emplacement Fabrics. Kluwer Academic Publishers, Dortrecht, pp. 95-112.
BOUCHEZ, J.-L., 2000. Anisotropie de susceptibilité magnétique et fabrique des granites. Comptes Rendus de l'Académie des Sciences de Paris, série II 330, 1-14.
BOUCHEZ, J.-L., GLEIZES, G., DJOUADI, T., RUCHETTE, P., 1990. Microstructure and magnetic susceptibility applied to emplacement kinematics of granites: the example of the Foix pluton (French Pyrenees). Tectonophysics 184, 157-171.
BOUCHEZ, J.-L., GLEIZES, G., 1995. Two-stage deformation of the Mont-Louis-Andorra granite pluton (Variscan Pyrenees) inferred from magnetic susceptibility anisotropy. Journal of the Geological Society of London 152, 669-679.
CANÓN-TAPIA, E., 1996. Single-grain versus distribution anisotropy: a simple three-dimensional model. Physics of the Earth and Planetary Interiors 94, 149-158.
CRUDEN, A.R., LAUNEAU, P., 1994. Structure, magnetic fabric and emplacement of the Archean Lebel Stock, S.W. Abitibi Greenstone Belt. Journal of Structural Geology 16, 677-691.
DINTER, D., MACFARLANE, Α., HAMES, W., ISACHNSEN, C, BOWRING, S., ROYDEN, L., 1995. U-Pb and 40Ar/J9Ar geochronology of the Symvolon granodiorite: Implications for the thermal and structural evolution of the Rhodope metamorphic core complex, northeastern Greece. Tectonics 14, 4, 886-908.
GRAHAM, J.W., 1954. Magnetic susceptibility anisotropy: an unexploited petrofabric element. Geol. Soc. Am. Abstr. Program 65, 1257-1258.
GRÉGOIRE, V., SAINT-BLANQUAT, M. DE, NÉDÉLEC, Α., BOUCHEZ, J.-L., 1995. Shape anisotropy versus magnetic interactions of magnetite grains: experiments and application to AMS in granitic rocks. Geophysical Research Letters 22 (20), 2765-2768.
GRÉGOIRE, V., DARROZES, J., GAILLOT, P., NÉDÉLEC, Α., LAUNEAU, P., 1998. Magnetite grain shape fabric and distribution anisotropy vs rock magnetic fabric: a three-dimensional case study. Journal of Structural Geology 20, 937-944.
HARGRAVES, R.B., JOHNSON, D., CHAN, C.Y, 1991. Distribution anisotropy: the cause of AMS in igneous rocks? Geophysical Research Letters 18, 2193-2196.
HEXT, G.R., 1963. The estimation of second-order tensors, with related tests and designs. Biometrika 50, 353-373.
JELINEK, V., 1977. Statistical theory of measuring anisotropy of magnetic susceptibility of rocks and its anisotropy. Geofyzika/AGICO, Brno, Chech Republic.
KISSEL, C, LAJ., MAZAUD, Α., DOKKEN, T, 1998. Magnetic anisotropy and environmental changes in two sedimentary cores from the Norwegian Sea and the North Atlantic. Earth and Planetary Science Letters 164, 617-626.
NAGATA, T, 1961. Rock magnetism. Maruzen, Tokyo, second edition.
RUCHETTE, P., 1987. Magnetic susceptibility of the rock matrix related to magnetic fabric studies. Journal of Structural Geology 9, 1015-1020.
RUCHETTE, P., 1988. Inverse magnetic fabric carbonate bearing rocks. Earth and Planetary Science Letters 90, 229-237.
RUCHETTE, P., JACKSON, M., AUBOURG, C, 1992. Rock magnetism and the interpretation of magnetic susceptibility. Rev. Geophys. 30(3), 209-226.
RUCHETTE, P., SCAILLET, B., GUILLOT, S., LE FORT, P., PÊCHER, Α., 1994. Magnetic properties of the High Himalayan leucogranites. Earth and Planetary Science Letters 126, 217-234.
RUCHETTE, P., AUBOURG, C, PERRIN, M., 1999. Is this magnetic fabric normal? Tectonophysics 307, 219-234.
SAINT-BLANQUAT M. DE, TIKOFF, B., 1997. Development of magmatic to solid-state fabrics during syntectonic emplacement of the Mono Creek granite, Sierra Nevada Batholith, in: Bouchez J.-L. et al. (eds), Granite: From Segregation of Melt to Emplacement Fabrics, Kluwer Acad. Pubi., Dordrecht, pp.231-252.
STACEY, F., JOPLIN, G., LINDSAY, J., 1960. Magnetic anisotropy and fabric of some foliated rocks from S.E. Australia. Geophysica Pur. Appi. 47, 30-40.
UYEDA, S., FULLER, M.D., BELSHÉ, J.C., GIRDLER, R.W., 1963. Anisotropy of Magnetic Susceptibility of Rocks and Minerals. Journal of Geophysical Research 68, 279-291.
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