Ancient mantle lithosphere beneath the Khanka massif in the Russian Far East

in situ Re-Os evidence

Kuo Lung Wang*, Vladimir Prikhodko, Suzanne Y. O'Reilly, William L. Griffin, Norman J. Pearson, Victor Kovach, Yoshiyuki Iizuka, Yu Hsian Chien

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The Os-isotope compositions of sulphides in mantle xenoliths hosted by Late Miocene alkali basalts from the Sviyaginsky volcano, Russian Far East, reveal the presence of Archaean-Proterozoic subcontinental lithospheric mantle beneath the Khanka massif. Their TMA and TRD model ages reveal similar peaks at 1.1 and 0.8 Ga suggesting later thermotectonic events in the subcontinental lithospheric mantle, whereas TRD model ages range back to 2.8 ± 0.5 (2σ) Ga. The events recognized in the subcontinental lithospheric mantle are consistent with those recorded in the crust of the Khanka massif. The sulphide Os-isotope data show that the subcontinental lithospheric mantle beneath the Khanka massif had formed at least by the Mesoproterozoic, and was subsequently metasomatized by juvenile crustal-growth events related to the evolution of the Altaids. The Khanka massif is further proposed to have tectonic affinity to the Siberia Craton and should originate from it accordingly.

Original languageEnglish
Pages (from-to)277-284
Number of pages8
JournalTerra Nova
Volume27
Issue number4
DOIs
Publication statusPublished - 1 Aug 2015

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