Email this article New data on the age and nature of the Khan–Bogd alkaline granites, Mongolia
- Authors: Gerdes A.1,2, Kogarko L.N.3, Vladykin N.V.4
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Affiliations:
- Institute of Earth Sciences
- Department of Earth Sciences
- Vernadsky Institute of Geochemistry and Analytical Chemistry
- Vinogradov Institute of Geochemistry, Siberian Branch
- Issue: Vol 477, No 1 (2017)
- Pages: 1320-1324
- Section: Geochemistry
- URL: https://journals.rcsi.science/1028-334X/article/view/191453
- DOI: https://doi.org/10.1134/S1028334X17110137
- ID: 191453
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Abstract
New age dating (291 Ma) was obtained for one of the largest alkaline granite massifs in the world, the Khan–Bogd Massif (Mongolia). For the first time, apart from zircon, other zirconium silicates, elpidite and armstrongite, have been analyzed. Our determinations showed the highly depleted nature of the mantle sources of granites with εNd = 12. All the studied Zr-silicates demonstrate positive Eu anomalies in the REE patterns, which indicate a low oxidation potential during alkaline granite formation.
About the authors
A. Gerdes
Institute of Earth Sciences; Department of Earth Sciences
Email: kogarko@geochi.ru
Germany, Frankfurt; Stellenbosch
L. N. Kogarko
Vernadsky Institute of Geochemistry and Analytical Chemistry
Author for correspondence.
Email: kogarko@geochi.ru
Russian Federation, Moscow, 119991
N. V. Vladykin
Vinogradov Institute of Geochemistry, Siberian Branch
Email: kogarko@geochi.ru
Russian Federation, Irkutsk, 664033
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