Genge, M.J.; Gileski, A. and Grady, M.M.
(2005).
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Abstract
Previous studies of unmelted micrometeorites (> 50 μm) recovered from Antarctic ice have concluded that chondrules, which are a major component of chondritic meteorites, are extremely rare among micrometeorites. We report the discovery of eight micrometeorites containing chondritic igneous objects, which strongly suggests that at least a portion of coarse-grained crystalline micrometeorites represent chondrule fragments. Six of the particles are identified as composite micrometeorites that contain chondritic igneous objects and fine-grained matrix. These particles suggest that at least some coarse-grained micrometeorites (cgMMs) may be derived from the same parent bodies as fine-grained micrometeorites. The new evidence indicates that, contrary to previous suggestions, the parent bodies of micrometeorites broadly resemble the parent asteroids of chondrulebearing carbonaceous chondrites.
| Item Type: | Journal Item |
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| ISSN: | 1086-9379 |
| Academic Unit/School: | Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences Faculty of Science, Technology, Engineering and Mathematics (STEM) |
| Item ID: | 5196 |
| Depositing User: | Users 6872 not found. |
| Date Deposited: | 03 Aug 2006 |
| Last Modified: | 07 Dec 2018 08:58 |
| URI: | http://oro.open.ac.uk/id/eprint/5196 |
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