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Ancient mantle lithosphere beneath the Khanka massif in the Russian Far East: in situ Re–Os evidence
Author(s) -
Wang KuoLung,
Prikhodko Vladimir,
O'Reilly Suzanne Y.,
Griffin William L.,
Pearson Norman J.,
Kovach Victor,
Iizuka Yoshiyuki,
Chien YuHsian
Publication year - 2015
Publication title -
terra nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.353
H-Index - 89
eISSN - 1365-3121
pISSN - 0954-4879
DOI - 10.1111/ter.12157
Subject(s) - massif , geology , mantle (geology) , craton , geochemistry , lithosphere , archean , crust , xenolith , basalt , tectonics , paleontology
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 T MA and T RD model ages reveal similar peaks at 1.1 and 0.8 Ga suggesting later thermotectonic events in the subcontinental lithospheric mantle, whereas T RD 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.