Zirconium geochemistry in the late magmatic process in ultramafic-mafic intrusions on the example of the Kivakka layered massif (North Karelia)
https://doi.org/10.55959/MSU0579-9406-4-2025-64-2-57-64
Abstract
The zircon is an important mineral that preserves geochemical indicators of the magmatic process and is widely used for geochronology. Recently, in addition to zircon of magmatic origin, grains of hydrothermal origin have been isolated. However, a thermodynamic description of the behavior of zirconium in postmagmatic processes has not yet been obtained. In this work, using the example of the Kivakka layered massif, the behavior of zirconium in ultramafic-mafic intrusions is considered. Zirconium, as an incoherent element, accumulates in the melt during crystallization of the massif; it crystallizes in the upper contact part of the intrusion, and then undergoes hydrothermal transformation and re-deposition in the postmagmatic process.
About the Authors
E. P. Miklyaeva
Geological Institute, Russian Academy of Sciences
Russian Federation
Russian Federation
Elizaveta P. Miklyaeva
Moscow
A. Yu. Bychkov
Lomonosov Moscow State University
Russian Federation
Russian Federation
Andrey Yu. Bychkov
Moscow
I. Yu. Nikolayeva
Lomonosov Moscow State University
Russian Federation
Russian Federation
Irina Yu. Nikolayeva
Moscow
M. E. Tarnopolskaya
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry (IGEM RAS)
Russian Federation
Russian Federation
Mariya E. Tarnopolskaya
Moscow
E. A. Minervina
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry (IGEM RAS)
Russian Federation
Russian Federation
Elena A. Minervina
Moscow
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For citations:
Miklyaeva E.P., Bychkov A.Yu., Nikolayeva I.Yu., Tarnopolskaya M.E., Minervina E.A. Zirconium geochemistry in the late magmatic process in ultramafic-mafic intrusions on the example of the Kivakka layered massif (North Karelia). Moscow University Bulletin. Series 4. Geology. 2025;64(2):57-64. (In Russ.) https://doi.org/10.55959/MSU0579-9406-4-2025-64-2-57-64
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