Computer Science
Scientific paper
Aug 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987e%26psl..84..369c&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 84, no. 4, Aug. 1987, p. 369-380.
Computer Science
16
Chondrites, Interstellar Magnetic Fields, Magnetic Properties, Magnetization, Meteoritic Composition, Solar System, Anisotropy, Demagnetization, Heat Treatment, Mineralogy, Thermal Decomposition, Meteorites, Magnetic Properties, Olivenza, Evolution, Solar System, Nrm, Magnetic Fields, Ll5 Chondrites, Ordinary Chondrites, Stony Meteorites, Samples, Meteorite, Remanent Magnetization, Origin, Formation, Grains, Metal, Parent Bodies, Tetrataenite, Demagnetization, Diagrams, Decay, Mineralogy, Intensity, Condens
Scientific paper
The magnetic properties of samples of the Olivenza chondrite (LL5) obtained from four collections have been investigated. The natural remanent magnetization (NRM) consists of a very stable primary component, which is randomly scattered in direction on a scale of about 1 cu mm or less within the samples, and a secondary magnetization widely varying in intensity, and probably also in direction. The origin of the secondary NRM is not clear, and may be of terrestrial origin. It is concluded that the NRM is carried by the ordered nickel-iron mineral, tetrataenite. The origin of the primary NRM could be a magnetic field associated with the solar nebula, out of which the metal grains condensed and acquired a thermoremanent magnetization (TRM), or Olivenza could be a fine-grained breccia, the constituent fragments possessing randomly directed magnetization. The implications for the origin and evolution of Olivenza and its parent body if the former magnetizing process has occurred are discussed.
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