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Doklady Earth Sciences

, Volume 465, Issue 2, pp 1268–1271 | Cite as

Isotope composition of neodymium in neo-Archean banded iron formations of Karelia and Kola Peninsula

  • S. B. Felitsyn
  • E. S. Bogomolov
  • N. A. Alfimova
Geochemistry

Abstract

Studies of three deposits of neo-Archean banded iron formations from the West Karelian domain (the Kostomuksha deposit) and from the Central Kola block (the Olenegorsk and Kirovogorsk deposits) showed a pronounced difference in the isotope compositions of Nd from quartz and magnetite–hematite interlayers. The less radiogenic Nd of iron-containing layers compared to that of the quartz component may be considered as an indication of the formation mechanism of the treated banded iron formations. Thus, silicon-containing layers are related to submarine volcanism and iron was supplied to the sedimentation zone from other sources.

Keywords

Magnetite Isotope Composition Neodymium DOKLADY Earth Science Kola Peninsula 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  • S. B. Felitsyn
    • 1
  • E. S. Bogomolov
    • 1
  • N. A. Alfimova
    • 1
    • 2
  1. 1.Institute of Precambrian Geology and GeochronologyRussian Academy of SciencesSt. PetersburgRussia
  2. 2.Saint-Petersburg State UniversitySt. PetersburgRussia

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