Isotope composition of neodymium in neo-Archean banded iron formations of Karelia and Kola Peninsula
- 39 Downloads
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.
KeywordsMagnetite Isotope Composition Neodymium DOKLADY Earth Science Kola Peninsula
Unable to display preview. Download preview PDF.
- 2.T. B. Bayanova and D. G. Egorov, in Geology and Mineral Resources of the Northwest and Central Russia, Apatity, 1999, pp. 19–24 [in Russian].Google Scholar
- 3.S. B. Lobach-Zhuchenko, N. A. Arestova, A. V. Kovalenko, et al., in Early Precambrian of the Baltic Shield, St. Petersburg: Nauka, 2005, pp. 345–363 [in Russian].Google Scholar