A study of Mg and K isotopes in Allende CAIs: Implications to the time scale for the multiple heating processes

Meteoritics and Planetary Science

Volumn 41, Issue 12, 2006, Pages 1871-1881

  Ito, Motoo ^a,c   Nagasawa, Hiroshi ^b   Yurimoto, Hisayoshi ^a,d  

^a TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

^b GAKUSHUIN UNIVERSITY   (Japan)

^c NASA JOHNSON SPACE CENTER   (United States)

^d HOKKAIDO UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

ALLENDE METEORITE; CRYSTALLIZATION; EVAPORATION; GRAIN SIZE; HEATING; ISOTOPIC COMPOSITION; MAGNESIUM; MASS SPECTROMETRY; MELILITE; MELTING; PETROGRAPHY; POTASSIUM; RADIONUCLIDE;

EID: 33846061099     PISSN: 10869379     EISSN: None     Source Type: Journal    
DOI: 10.1111/j.1945-5100.2006.tb00457.x     Document Type: Article

References (28)

1. Bizzarro M., Baker J. A., and Haack H. 2004. Mg isotope evidence for contemporaneous formation of chondrules and refractory inclusions. Nature 431:275-278.
2. Clayton R. N. 2002. Photochemical self-shielding in the solar nebula (abstract #1326) 33rd Lunar and Planetary Science Conference. CD-ROM.
3. De Chambost E., Schuhmacher M., Lovestam G., and Claesson S. 1997. Achieving high transmission with the Cameca IMS 1270. In Secondary ion mass spectrometry, edited by Benninghoven A., Hagenhoff B. B., and Werner H. W. New York: John Wiley & Sons. pp. 1003-1006.
4. Garner E. L., Murphy T. J., Gramlich J. W., Paulsen P. J., and Barnes I. L. 1975. Absolute isotopic abundance ratio and the atomic weight of a reference sample of potassium. Journal of Research of the National Bureau of Standards 79A:713-725.
5. Grossman L. 1975. Petrography and mineral chemistry of Ca-rich inclusions in the Allende meteorite. Geochimica et Cosmochimica Acta 39:439-454.
6. Humayun M. and Clayton R. N. 1995. Potassium isotope geochemistry: Genetic implications of volatile element depletion. Geochimica et Cosmochimica Acta 59:2131-2148.
7. 41K in Allende CAI: A hint re-examined (abstract). Meteoritics 19:243.
8. 41Ca decay in refractory inclusion (abstract). Meteoritics & Planetary Science 34:A57.
9. Ito M. 1999. Oxygen isotopic microanalysis by SIMS: A study of the formation process and thermal history of the Allende meteorite in the early solar system. Ph.D. thesis, Gakushun University, Tokyo, Japan.
10. Ito M. and Ganguly J. 2004. Potassium diffusion in melilite: Experimental studies and constraints on the thermal history and size of planetesimals hosting CAIs. Meteoritics & Planetary Science 39:1911-1920.
11. Ito M., Yurimoto H., and Nagasawa H. 2004. Oxygen isotopic SIMS analysis in Allende CAI: Details of the very early thermal history of the solar system. Geochimica et Cosmochimica Acta 68:2905-2923.
12. Koike O., Yurimoto H., and Nagasawa H. 1994. Al-Mg isotopic and REE clues to the formation to a type B1 CAI of Allende meteorite (abstract). 25th Lunar and Planetary Science Conference. pp. 725-726.
13. Lyons J. R. and Young E. D. 2005. CO self-shielding as the origin of oxygen isotope anomalies in the early solar nebula. Nature 435: 317-320.
14. MacPherson G. J., Davis A. M., and Zinner E. K. 1995. The distribution of aluminum-26 in the early solar system - A reappraisal. Meteoritics 30:365-377.
15. Maruyama S. and Yurimoto H. 2003. Relationship among O, Mg isotopes and the petrography of two spinel-bearing compound chondrules. Geochimica et Cosmochimica Acta 67:3943-3957.
16. Mayeda T. K., Clayton R. N., and Nagasawa H. 1986. Oxygen isotope variations within Allende refractory inclusions (abstract). 17th Lunar and Planetary Science Conference. pp.526-527.
17. Meeker G. P., Wasserburg G. J., and Armstrong J. T. 1983. Replacement textures in CAI and implications regarding planetary metamorphism. Geochimica et Cosmochimica Acta 47: 707-721.
18. Nagahara H., Nagasawa H., Nakamura N., and Matsui T. 1987. HN3-1 (type B-1 CAI) formed from isotopically and chemically heterogeneous interstellar minerals and condensates of the solar system by incompatible melting (abstract). 18th Lunar and Planetary Science Conference. pp. 694-695.
19. Sahijpal S., Goswami J. N., Davis A. M., Grossman L., and Lewis R. S. 1998. A stellar origin for the short-lived nuclides in the early solar system. Nature 391:559-561.
20. Sahijpal S., Goswami J. N., and Davis A. M. 2000. K, Mg, Ti, and Ca isotopic compositions and refractory trace element abundances in hibonite from CM and CV meteorites: Implications for early solar system processes. Geochimica et Cosmochimica Acta 64:1989-2005.
21. 41Ca in the early solar system. The Astrophysical Journal 431:L67-70
22. 41Ca in the early solar system. Geochimica et Cosmochimica Acta 60:1823-1835.
23. Srinivasan G. and Bischoff A. 2001. Ca-K and Al-Mg studies of CAIs from CH and CR chondrite (abstract). Meteoritics & Planetary Science 36:A196.
24. 26Mg excesses at the level of normal CAIs (abstract#1561). 31st Lunar and Planetary Science Conference. CD-ROM.
25. Yurimoto H. and Kuramoto K. 2004. Molecular cloud origin for the oxygen isotope heterogeneity in the solar system. Science 305: 1763-1766.
26. Yurimoto H., Morioka M., and Nagasawa H. 1989. Diffusion in single crystals of melilite: I. Oxygen. Geochimica et Cosmochimica Acta 53:2387-2394.
27. Yurimoto H., Nagasawa H., Mori Y., and Matsubaya O. 1994. Micro-distribution of oxygen isotopes in a refractory inclusion from the Allende meteorite. Earth and Planetary Science Letters 128:47-53.
28. Yurimoto H., Ito M., and Nagasawa H. 1998. Oxygen isotope exchange between refractory inclusion in Allende and solar nebula gas. Science 282:1874-1877.