Physics
Scientific paper
Mar 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..209c&link_type=abstract
Lunar and Planetary Science, volume 27, page 209
Physics
Cores: Formation, Meteorites: Iron, Nucleosynthesis, Palladium-107, Processes: Nebular
Scientific paper
In a recent report, we presented evidence for excesses (*) of ^107Ag* due to ^107Pd decay (tau bar = 6.5 Ma) in a wide variety of iron meteorites, some pallasites and mesosiderites. They provide unambiguous evidence of the in situ decay of ^107Pd in planetary differentiates. A key problem of early solar system chronologies has been the ability to interrelate different short-lived and long-lived chronometers. Evidence for the presence of both live ^107Pd and ^53Mn (tau bar = 5.3 Ma) in the early solar system has been found in several meteorites. However, there appear to be major discrepancies between the ^107Pd and ^53Mn chronometers. New Re-Os data on iron meteorites seem to support the small time differences for formation of iron meteorites as inferred by the Pd-Ag system. In this study, we selected samples on which Re-Os data were available. These include Coahuila (IIA) metal and Tres Castillos (IIIA) metal and sulfide.
Chen Jacqueline H.
Wasserburg Gerald J.
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