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Rhenium-Osmium in iron-nickel, sulfide, and phosphide: the possible determination of internal isochrons for iron meteorites

Papanastassiou, D. A. and Shen, J. J. and Wasserburg, G. J. (1995) Rhenium-Osmium in iron-nickel, sulfide, and phosphide: the possible determination of internal isochrons for iron meteorites. Meteoritics, 30 (5). pp. 560-561. ISSN 0026-1114.

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For age determinations of specific events in the evolution of iron meteorites, it is essential to obtain a reasonable range of physical-chemical fractionation of Re-Os. The possible stages of iron meteorite evolution that can, in principle, result in Re-Os fractionation include (1) condensation of PGE and of FeNi in the solar nebula; (2) subsequent oxidation of part of the Fe by reaction with S; (3) segregation and partial removal of massive FeS during melting on parent planetesimals; (4) melting followed by fractional crystallization of the metal phase and crystallization of the remaining FeS; (5) element redistribution during subsolidus phase transformations to produce schreibersite sheaves; and, finally, (6) precipitation or exsolution of minor microphases, e.g., rhabdite, at a later stage.

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Wasserburg, G. J.0000-0002-7957-8029
Additional Information:© 1995 Meteoritical Society. This work was supported by NASA grant NAGW-3337. Division Contribution 5562(905).
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Caltech Division of Geological and Planetary Sciences5562
Lunatic Asylum Lab905
Issue or Number:5
Record Number:CaltechAUTHORS:20131218-100419787
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Official Citation:Re-Os in FeNi, Sulfide, and Phosphide: The Possible Determination of Internal Isochrons for Iron Meteorites Papanastassiou, D. A., Shen, J. J., & Wasserburg, G. J. Meteoritics, vol. 30, no. 5, page 560
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43060
Deposited By: Ruth Sustaita
Deposited On:18 Dec 2013 18:35
Last Modified:09 Mar 2020 13:19

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