Oxygen isotope composition of zircons from the Talnakh economic intrusion of the Noril’sk province: first data

I. Yu Badanina*, E. A. Belousova, K. N. Malitch, S. F. Sluzhenikin

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This study presents the first results of oxygen isotope analyses (δ18O) collected on zircons from the Talnakh economic intrusion within the Noril’sk province. Zircons from gabbro-diorite, gabbroic rocks of the layered series and plagioclase-bearing wehrlite have similar mantle-like mean δ18O values (5.39 ± 0.48‰; 5.63 ± 0.48‰ and of 5.28 ± 0.34‰, respectively), which differ from δ18O in zircons from sulfide-bearing melanocratic troctolite with taxitic texture in the lower part of the intrusion (mean δ18O = 6.50 ± 0.98‰). These new oxygen isotope data support (i) the mantle-derived origin of the primary magma(s), parental to the Talnakh intrusion, and (ii) possible involvement of a crustal component during the formation of sulfide-bearing taxitic-textured rocks.

    Original languageEnglish
    Pages (from-to)1322-1325
    Number of pages4
    JournalDoklady Earth Sciences
    Volume489
    Issue number1
    DOIs
    Publication statusPublished - Nov 2019

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