Bibliographic Details
| Title: |
Isotope compositions of C and O of magmatic calcites from the Udachnaya-East pipe kimberlite, Yakutia. |
| Authors: |
Kuzmin, D., Sobolev, N., Tomilenko, A.1, Dublyansky, Yu.2 |
| Source: |
Doklady Earth Sciences. Jul2017, Vol. 475 Issue 1, p828-831. 4p. |
| Subjects: |
Magmas, Calcite analysis, Carbon isotopes, Oxygen isotopes, Kimberlite eruptions, Fluid inclusions |
| Geographic Terms: |
Sakha (Russia) |
| Abstract: |
It has been demonstrated for the first time that the isotopic compositions of carbon (δC) in magmatic calcites from the Udachnaya-East pipe kimberlite groundmass varies from-2.5 to-1.0‰ (V-PDB), while those of oxygen (δO) 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. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
