Toward Consistent Chronology in the Early Solar System: High-Resolution 53Mn-53Cr Chronometry for Chondrules
Abstract
New high-precision 53Mn-53Cr data obtained for chondrules extracted from a primitive ordinary chondrite, Chainpur (LL3.4), define an initial 53Mn/55 Mn ratio of (5.1+/-1.6)×10-6. As a result of this downward revision from an earlier higher value of (9.4+/-1.7)×10-6 for the same meteorite (Nyquist et al. 2001), together with an assessment of recent literature, we show that a consistent chronology with other chronometers such as the 26Al-26Mg and 207Pb-206Pb systems emerges in the early solar system.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 2007
- DOI:
- 10.1086/519282
- Bibcode:
- 2007ApJ...662L..43Y
- Keywords:
-
- Astrochemistry;
- Minor Planets;
- Asteroids;
- Nuclear Reactions;
- Nucleosynthesis;
- Abundances;
- Stars: Planetary Systems: Protoplanetary Disks;
- Solar System: Formation