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Oxygen isotopes in chondrules and coarse-grained chondrule rims from the Allende meteorite
- Source :
- Earth and Planetary Science Letters. 96:247-255
- Publication Year :
- 1990
- Publisher :
- Elsevier BV, 1990.
-
Abstract
- The relationship between the porphyritic chondrules and coase-grained chondrule rims of the Allende CV chondrite are examined. The oxygen isotopic compositions of seven chondrule-rim pairs and a large rimless refractory chondrule from Allende are determined. The results suggest that, to account for the O-isotopic compositions of the CV chondrules and rims, three solid precursor components are required: a high-temperature, refractory-, alkali, and (O-16)-rich component; a low-temperature, FeO-rich, refractory, and (O-16)-poor component, and an additional component to explain the composition of BO chondrules.
Details
- ISSN :
- 0012821X
- Volume :
- 96
- Database :
- OpenAIRE
- Journal :
- Earth and Planetary Science Letters
- Accession number :
- edsair.doi...........95f16d6f7e36918bc029ff5413cf6ccc