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Uranium-lead isotope systematics in a regionally metamorphosed tonalite from the eastern Alps

✍ Scribed by R.A. Cliff; A. Cohen


Book ID
115854666
Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
767 KB
Volume
50
Category
Article
ISSN
0012-821X

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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,