143Nd/144Nd and 87Sr/86Sr ratios from the Azores and their significance in LIL-element enriched mantle
Abstract
Basalts from Sao Miguel are displaced to higher 87Sr/86Sr ratios, and have a significantly shallower slope, compared with the main correlation between 143Nd/144Nd and 87Sr/86Sr for most mantle-derived volcanic rocks. Available data on young magmatic rocks indicate that large ionic lithophile (LIL)-element enrichment in the upper mantle involves two readily distinguishable components which reflect different histories.
- Publication:
-
Nature
- Pub Date:
- July 1979
- DOI:
- Bibcode:
- 1979Natur.280...28H