Physics
Scientific paper
Nov 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pepi...20..324n&link_type=abstract
(Topical Conference on Origins of Planetary Magnetism, Houston, Tex., Nov. 8-11, 1978.) Physics of the Earth and Planetary Inter
Physics
17
Magnetic Properties, Meteorites, Paleomagnetism, Solar Magnetic Field, Achondrites, Chondrites, Iron Meteorites, Space Exploration, Stony Meteorites, Stony-Iron Meteorites
Scientific paper
Magnetic properties of meteorites are considered, including the ratio of the amount of Ni-poor kamacite magnetization, Is(alpha), to saturation magnetization, Is, of chondrites, and the natural remnant magnetization (NRM) of the unaltered interior of meteorites. With an increase of Ni content in the metallic phase in chondrites in the order E, H, L, LL, C, the Is(alpha)/Is ratio goes from approximately 1 for E-chondrites to approximately 0 for C-chondrites, and the chondrites and achondrites are thus well separated in a magnetic classification diagram for stony meteorites. The NRM of C-chondrites is highly stable and that of achondrites reasonably stable against AF demagnetization, whereas the NRM of E-chondrites, ordinary chondrites, and stony-iron meteorites is not very stable in most cases. Furthermore, the paleointensity for Allende C3 chondrite, as well as the Orgueil, Mighei, Leoville and Karoonda C-chondrites is estimated to be about 1.0 Oe, while the paleointensity for achondrites is roughly 0.1 Oe.
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