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Magnetic properties of subaerial basalts at low temperatures
Earth, Planets and Space volume 53, pages 883–892 (2001)
Magnetic properties have been measured as a function of temperature from 2 K to room temperature for twenty-one samples of subaerial basalts of different origin and age, using an MPMS instrument. In all samples but four, titanomagnetite with a titanium content of less than 5 per cent has been determined as a dominant magnetic mineral carrying NRM from χ(T) measurements above room temperature and Verwey transition observations. However, the new low-temperature experiments yielded evidence of the presence of another magnetic mineral in all samples. This mineral accounts for up to 70 per cent of saturation magnetization at 2 K and acquires a relatively strong but thermally unstable SIRM at this temperature. Comparison of susceptibility vs. temperature curves measured in low and high DC biasing fields reveals evidence of superparamagnetic behavior, peaks marking the effective blocking temperatures being shifted from <2 K to about 16 K by a 4.8 T DC magnetic field. At the same time, the presence of peaks in the high-field susceptibility curves indicate that the corresponding magnetic phase does not reach saturation, even in the highest field available to us. A possible candidate to account for these properties is a hemoilmenite with 8–10 mole per cent of hematite, originating from high-temperature deuteric oxidation. This is in accordance with the prevailing occurrence of exsolution lamellae within titanomagnetite grains observed in scanning electron microscopy (SEM) images.
Aragón, R., Magnetization and exchange in nonstoichiometric magnetite, Phys. Rev. B, 46, 5328–5333, 1992.
Aragón, R., D. J. Buttrey, J. P. Shepherd, and J. M. Honig, Influence of nonstoichiometry on the Verwey transition, Phys. Rev. B, 31, 430–436, 1985.
Banerjee, S. K., Magnetic properties of Fe-Ti oxides, in Oxide Minerals: Petrologic and Magnetic Significance, edited by D. L. Lindsley, pp. 107–128, Mineralogical Society of America, 1991.
Bozorth, R. M., D. E. Walsh, and A. J. Williams, Magnetization of ilmenite-hematite system at low temperatures, Phys. Rev., 108, 157–158, 1957.
Brabers, V. A. M., F. Walz, and H. Kronmüller, Impurity effects upon the Verwey transition in magnetite, Phys. Rev. B, 58, 14163–14166, 1998.
Brodskaya, S. Yu. and G. M. Zaytseva, Magnetic characteristics of hemoilmenites with low Curie points, Izv., Earth. Phys., 12, 219–223, 1976.
Buddington, A. F. and D. H. Lindsley, Iron-titanium oxide minerals and synthetic equivalents, J. Petrol, 5, 310–357, 1964.
Chauvin, A., P. Roperch, and R. A. Duncan, Records of geomagnetic reversals from volcanic islands of French Polynesia 2. Paleomagnetic study of a flow sequence (1.2−0.6 Ma) from the Island of Tahiti and discussion of reversal models, J. Geophys. Res., 95, 2727–2752, 1990.
Chauvin, A., P.-Y. Gillot, and N. Bonhommet, Paleointensity of the Earth’s magnetic field recorded by two Late Quaternary volcanic sequences at the Island of La Réunion (Indian Ocean), J. Geophys. Res., 96, 1981–2006, 1991.
Clark, D. A. and P. W. Schmidt, Theoretical analysis of thermomagnetic properties, low-temperature hysteresis and domain structure of titano-magnetites, Phys. Earth Planet. Inter, 30, 300–316, 1982.
Dunlop, D. J. and O. Ozdemir, Rock Magnetism: Fundamentals and Frontiers, 573 pp., Cambridge University Press, Cambridge, New York, 1997.
Haggerty, S. E., Oxidation of opaque mineral oxides in basalts, in Oxide Minerals, edited by D. Rumble, pp. Hg1–Hg100, Mineralogical Society of America, 1976.
Hodych, J. P., Magnetic hysteresis as a function of low temperature for deep-sea basalts containing large titanomagnetite—inference of domain state and controls on coercivity, Can. J. Earth Sci., 19, 144–152, 1982.
Hodych, J. P., Magnetic hysteresis as a function of low temperature in rocks: evidence for internal stress control of remanence in multi-domain and pseudo-single-domain magnetite, Phys. Earth Planet. Inter., 64, 21–36, 1990.
Hodych, J. P., Low-temperature demagnetization of saturation remanence in rocks bearing multidomain magnetite, Phys. Earth Planet. Inter, 66, 144–152, 1991.
Hoye, G. S. and W. O’Reilly, A magnetic study of the ferro-magnesian olivines (FexMg1−x)2SiO4, 0 < x < 1, J. Phys. Chem. Solids, 33, 1827–1834, 1972.
Ishikawa, Y., Magnetic properties of ilmenite-hematite system at low temperature, J. Phys. Soc. Jpn., 17, 1835–1844, 1962.
Ishikawa, Y. and S. Akimoto, Magnetic properties of the FeTiO3−Fe2O3 solid solution series, J. Phys. Soc. Jpn., 12, 1083–1098, 1957.
Kosterov, A. A. and M. Prévot, Possible mechanisms causing failure of Thellier palaeointensity experiments in some basalts, Geophys. J. Int., 134, 554–572, 1998.
Kosterov, A. A., M. Prévot, M. Perrin, and V. A. Shashkanov, Paleointensity of the Earth’s magnetic field in Jurassic: new results from a Thellier study of the Lesotho Basalt, Southern Africa, J. Geophys. Res., 102, 24859–24872, 1997.
Kosterov, A. A., M. Perrin, J. M. Glen, and R. S. Coe, Paleointensity of the Earth’s magnetic field in Early Cretaceous time: The Parana Basalt, Brazil, J. Geophys. Res., 103, 9739–9753, 1998.
Koz/klowski, A., P. Metcalf, Z. Kakol, and J. M. Honig, Electrical and magnetic properties of Fe3−zAlzO4 (z < 0. 06), Phys. Rev. B, 53, 15113–15118, 1996a.
Koz/klowski, A., Z. Kakol, D. Kim, R. Zaleski, and J. M. Honig, Heat capacity of Fe3-αMαO4 (M = Zn, Ti, 0 ≤ α ≤ 0. 04), Phys. Rev. B, 54, 12093–12098, 1996b.
Lethuillier, P. and P. Massal, Propriétés magnétiques de grenats et d’ilménites naturels prélevés dans des gisements variés, Bull. Minéral., 103, 33–39, 1980.
Merrill, R. T., Low-temperature treatments of magnetite and magnetite-bearing rocks, J. Geophys. Res., 75, 3343–3349, 1970.
Moskowitz, B. M., M. Jackson, and C. Kissel, Low-temperature magnetic behavior of titanomagnetites, Earth Planet. Sci. Lett., 157, 141–149, 1998.
Nagata, T., K. Kobayashi, and M. D. Fuller, Identification of magnetite and hematite in rocks by magnetic observations at low temperature, J. Geophys. Res., 69, 2111–2120, 1964.
Néel, L., Théorie du traînage magnétique des ferromagnétiques en grains fins avec applications aux terres cuites, Ann. Geophys., 5, 99–136, 1949.
Néel, L., Some theoretical aspects of rock-magnetism, Adv. Phys., 4, 191–243, 1955.
O’Reilly, W., Rock andMineral Magnetism, 220 pp., Blackie, Glasgow and London, & Chapman and Hall, New York, 1984.
Potapov, G. A., L. N. Romashov, B. B. Zhalsabon, and V. M. Lapushkov, Some peculiarities of magnetic structure and properties of ilmenite varieties, Izv, Earth Phys., 30, 365–368, 1994.
Radhakrishnamurty, C., S. D. Likhite, E. R. Deutsch, and G. S. Murthy, A comparison of the magnetic properties of synthetic titanomagnetites and basalts, Phys. Earth Planet. Inter, 26, 37–46, 1981.
Riisager, P. and N. Abrahamsen, Palaeointensity of West Greenland Palaeocene basalts: asymmetric intensity around the C27n−C26r transition, Phys. Earth Planet. Inter, 118, 53–64, 2000.
Santoro, R. P., R. E. Newham, and S. Nomura, Magnetic properties of Mn2SiO4 and Fe2SiO4, J. Phys. Chem. Solids, 27, 655–666, 1966.
Sawaoka, A., S. Miyahara, and S. Akimoto, Magnetic properties of several metasilicates and metagermanates with pyroxene structure, J. Phys. Soc. Jpn., 25, 1253–1257, 1968.
Senanayake, W. E. and M. W. McElhinny, Hysteresis and susceptibility characteristics of magnetite and titanomagnetites: interpretation of results from basaltic rocks, Phys. Earth Planet. Inter, 26, 47–55, 1981.
Senanayake, W. E. and M. W. McElhinny, The effects of heating on low-temperature hysteresis and susceptibility properties of basalts, Phys. Earth Planet. Inter, 30, 317–321, 1982.
Senftle, F. E., A. N. Thorpe, C. Briggs, C. Alexander, J. Minkin, and D. L. Griscom, The Néel transition and magnetic properties of terrestrial, synthetic, and lunar ilmenites, Earth Planet. Sci. Lett., 26, 377–386, 1975.
Shau, Y.-H., M. Torii, C.-S. Horng, and D. R. Peacor, Subsolidus evolution and alteration of titanomagnetite in ocean ridge basalts from Deep Sea Drilling Project/Ocean Drilling Program Hole 504B, Leg 83: Implications for the timing of magnetization, J. Geophys. Res., 105, 23635–23649, 2000.
Sherwood, G. J., Rock magnetic studies of Miocene volcanics in eastern Otago and Banks Peninsula, New Zealand; comparison between Curie temperature and low temperature susceptibility behaviour, New Zealand J. Geol. Geophys., 31, 225–235, 1988.
Simsa, Z., F. Zounová, and S. Krupička, Initial permeability of single crystal magnetite and Mn-ferrite, Czech. J. Phys. B, 35, 1271–1281, 1985.
Skumryev, V., H. J. Blythe, J. Cullen, and J. M. D. Coey, AC susceptibility of a magnetite crystal, J. Magn. Magn. Mater, 196-197, 515–517, 1999.
Syono, Y., Magnetocrystalline anisotropy and magnetostriction of Fe3O4−Fe2TiO4 series—with special application to rocks magnetism, Jpn. J. Geophys., 4, 71–143, 1965.
Thellier, E. and O. Thellier, Sur l’intensité du champ magnétique terrestre dans le passé historique et géologique, Ann. Geophys., 15, 285–376, 1959.
Thomas, N., An integrated rock magnetic approach to the selection or rejection of ancient basalt samples for palaeointensity experiments, Phys. Earth Planet. Inter, 75, 329–342, 1993.
Thorpe, A. N., J. A. Minkin, F. E. Senftle, C. Alexander, C. Briggs, H. T. Evans, Jr., and G. L. Nord, Jr., Cell dimensions and antiferromagnetism of lunar and terrestrial ilmenite single crystals, J. Phys. Chem. Solids, 38, 115–123, 1977.
Tucker, P. and W. O’Reilly, The laboratory simulation of deuteric oxidation of titanomagnetites: effect on magnetic properties and stability of thermoremanence, Phys. Earth Planet. Inter, 23, 112–133, 1980.
Worm, H. U. and M. Jackson, The superparamagnetism of Yucca Mountain Tuff, J. Geophys. Res., 104, 25415–25425, 1999.
Yakubovskaya, N. Yu. and I. P. Ilupin, Magnetic properties of picroilmenite from kimberlites of Siberia, Mineral. J., 4(5), 36–43, 1982 (in Russian with English abstract).
Yakubovskaya, N. Yu. and V. A. Fradkov, Magnetic structure of ilmenite, Mem. All-Union Min. Soc, 115, 490–495, 1986 (in Russian).
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Kosterov, A. Magnetic properties of subaerial basalts at low temperatures. Earth Planet Sp 53, 883–892 (2001). https://doi.org/10.1186/BF03351685
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