Isotope compositions of C and O of magmatic calcites from the Udachnaya–East pipe kimberlite, Yakutia

A. A. Tomilenko, Yu V. Dublyansky, D. V. Kuzmin, N. V. Sobolev

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Pages (from-to)828-831
Number of pages4
JournalDoklady Earth Sciences
Volume475
Issue number1
DOIs
Publication statusPublished - 1 Jul 2017

Keywords

  • NORTHWEST-TERRITORIES
  • HYPABYSSAL KIMBERLITE
  • CANADA
  • CARBONATES
  • MINERALS
  • BEARING
  • GRAS

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