New Isotope Constraints on the Time of Formation of the Nersa Dolerite Complex from the Biryusa–Sayan Area

E. A. Vasyukova, D. V. Metelkin, F. A. Letnikov, E. F. Letnikova

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Abstract: New data on the Sm–Nd isotopic composition of the dolerites of the Nersa complex that are consistent with the petrographic study and the U–Pb dating of detrital zircon from the overlying sedimentary sequences of the Biryusa–Sayan area are presented. The data obtained indicate the absence of the supposed magmatic event 1.6 billion years ago and clearly indicate the Neoproterozoic age of the intrusions. Their source could have been the metasomatized mantle; dolerites went through several stages of metasomatism during their formation, which was reflected in the evolution of its isotopic systems.

Original languageEnglish
Pages (from-to)363-367
Number of pages5
JournalDoklady Earth Sciences
Volume485
Issue number2
DOIs
Publication statusPublished - 1 Apr 2019

Keywords

  • SIBERIA
  • MARGIN

Fingerprint

Dive into the research topics of 'New Isotope Constraints on the Time of Formation of the Nersa Dolerite Complex from the Biryusa–Sayan Area'. Together they form a unique fingerprint.

Cite this