Shooting stars: Our guide to the early solar system`s formation
Plagioclase grains were studied from the Allende meteorite, sample 916, to determine a chronology of events that occurred within the first ten million years of the solar system`s formation. Radiometric dating of the {sup 26}-Al-{sup 26}Mg system was accomplished on the ion microprobe mass spectromer. The excess {sup 26}-Mg in core plagioclase grains of calcium-aluminum rich inclusions (CAIs) provided a time of original condensation for {sup 26}-Al of {approximately}4.55 million years ago, a hundred million years prior to the formation of the planets. This data has been found to correlate with other excess {sup 26}-Mg samples. Measurements of plagioclase in the CAI`s periphery dated 1.52 million years later, suggesting an interesting history of collision and melting.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- OSTI ID:
- 282978
- Report Number(s):
- UCRL-ID-114972-4; CONF-9505323-; ON: DE96006013; TRN: 96:003984-0014
- Resource Relation:
- Conference: Science and Engineering Research Semester (SERS) spring 1995 symposium, Livermore, CA (United States), 5-12 May 1995; Other Information: PBD: Nov 1995; Related Information: Is Part Of SERS internship Spring 1995 abstracts and research papers; Davis, B.; PB: 294 p.
- Country of Publication:
- United States
- Language:
- English
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