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The Formation of Chondrules: Petrologic Tests of the Shock Wave Model

Connolly, Harold C., Jr. and Love, Stanley G. (1998) The Formation of Chondrules: Petrologic Tests of the Shock Wave Model. Science, 280 (5360). pp. 62-67. ISSN 0036-8075. doi:10.1126/science.280.5360.62.

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Chondrules are millimeter-sized rounded igneous rocks within chondritic meteorites. Their textures and fractionated mineral chemistries suggest that they formed by repeated, localized, brief (minutes to hours) melting of cold aggregates of mineral dust in the protoplanetary nebula. Astrophysical models of chondrule formation have been unable to explain the petrologically diverse nature of chondrites. However, a nebular shock wave model for chondrule formation agrees with many of the observed petrologic and geochemical properties of chondrules and shows how particles within the nebula are sorted by size and how rims around chondrules are formed. It also explains the volatile-rich nature of chondrule rims and the chondrite matrix.

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Additional Information:© 1998 American Association for the Advancement of Science. We thank P. Cassen, D. Woolum, G. Huss, D. Burnett, T. Ahrens, R. Ash, S. Russell, and R. Jones for their numerous helpful discussions and support on this project. Comments from two anonymous reviews helped to improve this paper. This work was supported by NASA (D. S. Burnett). This is Caltech Division contribution number 8507.
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Caltech Division of Geological and Planetary Sciences8507
Issue or Number:5360
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52105
Deposited By: Tony Diaz
Deposited On:24 Nov 2014 20:58
Last Modified:10 Nov 2021 19:20

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