Uranium isotope compositions of the basaltic angrite meteorites and the chronological implications for the early Solar System.

ABSTRACT: Events occurring within the first 10 million years of the Solar System's approximately 4.5 billion-year history, such as formation of the first solids, accretion, and differentiation of protoplanetary bodies, have determined the evolutionary course of our Solar System and the planetary bodies within it. The application of high-resolution chronometers based on short-lived radionuclides is critical to our understanding of the temporal sequence of these critical events. However, to map the relative ages from such chronometers onto the absolute time scale, they must be "anchored" to absolute ages of appropriate meteoritic materials using the high-precision lead-lead (Pb-Pb) chronometer. Previously reported Pb-Pb dates of the basaltic angrite meteorites, some of which have been used extensively

SUBMITTER: Brennecka GA 

PROVIDER: S-EPMC3386092 | biostudies-literature | 2012 Jun

REPOSITORIES: biostudies-literature