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

Результат исследования: Научные публикации в периодических изданияхстатья

Аннотация

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.

Язык оригиналаанглийский
Страницы (с-по)828-831
Число страниц4
ЖурналDoklady Earth Sciences
Том475
Номер выпуска1
DOI
СостояниеОпубликовано - 1 июл 2017

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