Isotope compositions of C and O of magmatic calcites from the Udachnaya–East pipe kimberlite, Yakutia
- Authors: Tomilenko A.A.1, Dublyansky Y.V.2, Kuzmin D.V.1,3, Sobolev N.V.1,3
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Affiliations:
- Sobolev Institute of Geology and Mineralogy, Siberian Branch
- Institut für Geologie
- Novosibirsk State University
- Issue: Vol 475, No 1 (2017)
- Pages: 828-831
- Section: Geochemistry
- URL: https://journals.rcsi.science/1028-334X/article/view/190364
- DOI: https://doi.org/10.1134/S1028334X17070297
- ID: 190364
Cite item
Abstract
It has been demonstrated for the first time that the isotopic compositions of carbon (δ13C) in magmatic calcites from the Udachnaya–East pipe kimberlite groundmass varies from–2.5 to–1.0‰ (V-PDB), while those of oxygen (δ18O) range from 15.0 to 18.2‰ (V-SMOW). The obtained results imply that during the terminal late magmatic and postmagmatic stages of the kimberlite pipe formation, the carbonates in the kimberlite groundmass became successively heavier isotopically, which indicates the hybrid nature of the carbonate component of the kimberlite: it was formed with contributions from mantle and sedimentary marine sources.
About the authors
A. A. Tomilenko
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Author for correspondence.
Email: tomilin@igm.nsc.ru
Russian Federation, Novosibirsk
Yu. V. Dublyansky
Institut für Geologie
Email: tomilin@igm.nsc.ru
Austria, Innsbruck
D. V. Kuzmin
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University
Email: tomilin@igm.nsc.ru
Russian Federation, Novosibirsk; Novosibirsk
N. V. Sobolev
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University
Email: tomilin@igm.nsc.ru
Russian Federation, Novosibirsk; Novosibirsk