Tissot, F. L. H. and Dauphas, N. (2012) ^(238)U/^(235)U Ratios of Anagrams: Angrites and Granites. In: 43rd Lunar and Planetary Science Conference, March 19-23, 2012, The Woodlands, TX. https://resolver.caltech.edu/CaltechAUTHORS:20180618-131630058
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Abstract
Significant ^(238)U/^(235)U variations have been documented in meteoritic [e.g. 1-4] and terrestrial [5] samples, which can affect Pb-Pb ages. In most cases, the cause of these variations is not understood. Here, we report an extensive study of the U isotopic composition of planetary crustal rocks. Determination of ^(238)U/^(235)U ratio in angrites is critical to establish their age: an important anchor in early solar system chronology [6,7]. The extent to which the protolith of terrestrial granites affects their U isotopic composition is unknown. We report high-precision U isotope measurements of angrites and terrestrial granites to address these two outstanding questions in solar system chronology and crustal differentiation.
Item Type: | Conference or Workshop Item (Paper) | ||||||
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Additional Information: | © 2012 Lunar and Planetary Institute. | ||||||
Record Number: | CaltechAUTHORS:20180618-131630058 | ||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20180618-131630058 | ||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
ID Code: | 87193 | ||||||
Collection: | CaltechAUTHORS | ||||||
Deposited By: | Tony Diaz | ||||||
Deposited On: | 18 Jun 2018 20:32 | ||||||
Last Modified: | 09 Mar 2020 13:18 |
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