The Early Paleozoic Active Margin of the Khangai Segment of the Mongol–Okhotsk Ocean

V. V. Yarmolyuk, I. K. Kozakov, A. M. Kozlovsky, E. A. Kudryashova, A. V. Travin, T. I. Kirnozova, M. M. Fugzan, Yu V. Plotkina

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Within the northern fringe of the western (Khangai) flank of the Mongol–Okhotsk fold belt, magmatic complexes of intermediate to moderately acidic rocks occur. They comprise widely distributed gabbro–diorites, diorites, tonalites, and granodiorites. Geochronological studies have demonstrated that these rocks were formed in the time span of 437 to 375 Ma. The geochemical affinities of the rocks suggest their formation in subduction tectonic settings; hence, their paleotectonic position corresponds to the continental margin of the Mongol–Okhotsk paleoocean. It has been concluded that this Middle Paleozoic igneous activity occurred in the active continental margin settings, formed by subduction of the paleooceanic plate under the Siberian continent.

Original languageEnglish
Pages (from-to)559-563
Number of pages5
JournalDoklady Earth Sciences
Volume480
Issue number1
DOIs
Publication statusPublished - 1 May 2018

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