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Lead isotopes in sulfides from the Stillwater Complex, Montana: evidence for subsolidus remobilization

✍ Scribed by I. S. McCallum; M. W. Thurber; H. E. O'Brien; B. K. Nelson


Book ID
106088913
Publisher
Springer
Year
1999
Tongue
English
Weight
555 KB
Volume
137
Category
Article
ISSN
0010-7999

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Uranium-lead isotopic evidence from zirc
✍ R. A. Cliff πŸ“‚ Article πŸ“… 1980 πŸ› Springer 🌐 English βš– 776 KB

U/Pb isotopic data for two zircon suites are presented : (1) a pre D1 tonalite gneiss gives an age of 443 + 13 \_ 16 m.y. (2) a post D1 leucogranite gneiss gives 427+~ ~ m.y. Both zircon suites contain a minor inherited pre-Cambrian component. The data confirm a lower Palaeozoic age for the major,