Abundance of Alkali Metals, Alkaline and Rare Earths, and Strontium-87/ Strontium-86 Ratios in Lunar Samples
- 30 January 1970
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 167 (3918), 485-487
- https://doi.org/10.1126/science.167.3918.485
Abstract
The variation in trace element abundance patterns indicates that lunar igneous rocks are the product of extensive igneous fractionation. Variations in the Sr87/ Sr86 ratio indicate that these rocks crystallized 3.5±0.3 x 109 years ago.Keywords
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