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Oxygen isotope variation in stony-iron meteorites

Greenwood, R. C.; Franchi, I.A.; Jambon, A.; Barrat, J.A. and Burbine, T.H. (2006). Oxygen isotope variation in stony-iron meteorites. Science, 313(5794) pp. 1763–1765.

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Asteroidal material, delivered to Earth as meteorites, preserves a record of the earliest stages of planetary formation. High-precision oxygen isotope analyses for the two major groups of stony-iron meteorites (main-group pallasites and mesosiderites) demonstrate that each group is from a distinct asteroidal source. Mesosiderites are isotopically identical to the howardite-eucrite-diogenite clan and, like them, are probably derived from the asteroid 4 Vesta. Main-group pallasites represent intermixed core-mantle material from a single disrupted asteroid and have no known equivalents among the basaltic meteorites. The stony-iron meteorites demonstrate that intense asteroidal deformation accompanied planetary accretion in the early Solar System.

Item Type: Journal Item
ISSN: 1095-9203
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 5787
Depositing User: Ian Franchi
Date Deposited: 03 Nov 2006
Last Modified: 07 Dec 2018 08:59
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