Title: Thermomagnetic properties, natural magnetic moments, and magnetic anisotropies of some chondritic meteorites
Abstract: Journal of Geophysical Research (1896-1977)Volume 66, Issue 5 p. 1523-1534 Thermomagnetic properties, natural magnetic moments, and magnetic anisotropies of some chondritic meteorites F. D. Stacey, F. D. StaceySearch for more papers by this authorJ. F. Lovering, J. F. LoveringSearch for more papers by this authorL. G. Parry, L. G. ParrySearch for more papers by this author F. D. Stacey, F. D. StaceySearch for more papers by this authorJ. F. Lovering, J. F. LoveringSearch for more papers by this authorL. G. Parry, L. G. ParrySearch for more papers by this author First published: May 1961 https://doi.org/10.1029/JZ066i005p01523Citations: 84AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract Thermomagnetic analyses, thermal demagnetization of natural and laboratory-induced remanent magnetic moments, and measurements of magnetic anisotropy have been carried out on a number of chondritic stony meteorites. Eighty to ninety per cent of the saturation magnetic moments were due to α-phase iron-nickel (kamacite) containing 5 to 6 per cent of nickel, and this phase was also responsible for most of the observed remanence and magnetic anisotropy. Minor magnetic constituents were determined with much less certainty. The natural magnetic moments of the Mt. Browne, Homestead, and Farmington chondrites had two components of quite different origins; in each case the important component appears to have been induced thermally in an extraterrestrial field. The Mokoia carbonaceous chondrite was found to have only a small moment, consistent with isothermal induction in the earth's field. The magnetic anisotropies of eight chondrites were found to be related to the degree of metamorphism indicated by their porosities. The magnetic evidence is consistent with the supposition that the chondrites once formed parts of the mantle of a body with a fluid metal core which produced a magnetic field of terrestrial type. References Bridgman, P. W., The failure of cavities in crystals and rocks under pressure, Am. J. Sci., 195, 243– 268, 1918. Brown, H., C. C. Patterson, The composition of meteoritic matter, 3, Phase equilibria, genetic relationships and planet structure, J. Geol., 56, 85– 111, 1948. Haigh, G., The process of magnetization by chemical change, Phil. Mag., 3, 267– 286, 1958. Hoselitz, K., Ferromagnetic Properties of Metals and Alloys, 317, Clarendon Press, Oxford, 1952. Kobayashi, K., Chemical remanent magnetization of ferromagnetic minerals and its application to rock magnetism, J. Geomag. Geoelec., 10, 99– 117, 1959. Lovering, J. F., Differentiation in the iron-nickel core of a parent meteorite body, Geochim. et Cosmochim. Acta, 12, 238– 252, 1957a. Lovering, J. 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Publication Year: 1961
Publication Date: 1961-05-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 105
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