Mesozoic age of the Gilyui Metamorphic Complex in the junction zone of the Selenga–Stanovoi and Dzhugdzhur–Stanovoi superterranes, Central Asian fold belt

S. D. Velikoslavinskii, A. B. Kotov, V. P. Kovach, A. M. Larin, A. A. Sorokin, A. P. Sorokin*, E. V. Tolmacheva, E. B. Salnikova, K. L. Wang, B. M. Jahn, S. L. Cung

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The Gilyui Complex includes sedimentary and volcanic rocks metamorphosed to amphibolite and epidote–amphibolite facies, which constitute blocks confined to the main structural sutures of the Dzhugdzhur–Stanovoi superterrane in the Central Asian fold belt. In recent stratigraphic scales, they are considered as being Neoarchean in age with Nd model age values of 1.5–3.0 Ga. The youngest detrital zircons from metamorphosed mudstone of the Gilyui Complex yield a date of 285 ± 4 Ma, which determines the lower age limit for the formation of its protolith. The age of crystallization of rhyolites from the Gilyui Complex is determined to be 231 ± 4 Ma. If the rhyolites form volcanic flow units or sills, the Gilyui Complex is approximately 230 Ma or 231 ± 4 to 285 ± 4 Ma old, respectively.

Original languageEnglish
Pages (from-to)561-565
Number of pages5
JournalDoklady Earth Sciences
Volume468
Issue number2
DOIs
Publication statusPublished - 1 Jun 2016
Externally publishedYes

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