Comparison of Supercontinent Cycles in the Metallogeny of Rare Earth Elements

The distribution of integrated resources of large and superlarge deposits (LSLDs) of rare earth elements (REEs) is compared to the current model of supercontinent cyclicity during Earth’s evolution. It is found that REE LSLDs are related predominantly to igneous complexes (carbonatite, nepheline sye...

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Published inDoklady earth sciences Vol. 480; no. 2; pp. 730 - 734
Main Authors Tkachev, A. V., Rundqvist, D. V., Vishnevskaya, N. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.06.2018
Springer
Springer Nature B.V
Subjects
Analysis
Clay
Earth
Earth and Environmental Science
Earth Sciences
Geology
Granite
Metallogenesis
Nepheline
Placers
Planetary evolution
Rare earth elements
Rare earth metals
Resources
Syenite
Trace elements
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Summary:The distribution of integrated resources of large and superlarge deposits (LSLDs) of rare earth elements (REEs) is compared to the current model of supercontinent cyclicity during Earth’s evolution. It is found that REE LSLDs are related predominantly to igneous complexes (carbonatite, nepheline syenites, syenite-alkaline granites, subalkaline granites), which are often additionally enriched in the hypergenic zone. A certain part of the resources is concentrated in independent hypergenic formations represented by placers and ion-adsorbed clays. Each supercontinent cycle—Kenoran, Columbian, Rodinian, Pangean, and Amasian—is expressed in the REE metallogeny in particular way: we revealed significant intercycle variations in the amount of REE LSLDs, the variety of their types, total accumulated resources, and some other characteristics.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X18060302