| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6438164 | Geochimica et Cosmochimica Acta | 2015 | 33 Pages |
Abstract
The average 238U/235U of the investigated meteorite groups (including data compiled from the literature) and terrestrial basalts is 137.794 ± 0.027 (at a 95% student's t confidence level, including all propagated uncertainties) and represents the best estimate for the U isotope composition of the Earth and the Solar System. This value may be used for U-Pb and Pb-Pb dating of Solar System materials, provided the precise U isotope composition of the sample is unknown. Compared to Pb-Pb ages that were determined with the previously assumed value for 238U/235U (137.88), this new value results in an age adjustment of â0.9 Ma.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Alexander Goldmann, Gregory Brennecka, Janine Noordmann, Stefan Weyer, Meenakshi Wadhwa,