Email this article U-Th-He system in ore and accessory minerals from metasomatic rocks: testing potential thermochronometers from the Salla-Kuolayarvi zone
- Authors: Gannibal M.A.1, Gannibal A.E.1, Gudkov A.V.1, Kalinin A.A.1, Kashuk M.O.1, Kolobov V.V.2
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Affiliations:
- Geological Institute of the Kola Scientific Center, Russian Academy of Sciences
- Center for Physical and Technical Problems of Northern Energy, Kola Scientific Center, Russian Academy of Sciences
- Issue: Vol 521, No 2 (2025)
- Pages: 265-271
- Section: MINERALOGY
- Submitted: 10.09.2025
- Published: 15.12.2025
- URL: https://bakhtiniada.ru/2686-7397/article/view/308638
- DOI: https://doi.org/10.31857/S2686739725040127
- EDN: https://elibrary.ru/qdtzgk
- ID: 308638
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Abstract
A new approach to obtaining U-Th-He thermochronologic information is proposed. The content and mobility of radiogenic helium in concentrates of pyrite, magnetite, hematite and amphibole from albitites and their host rocks from gold-bearing uranium ore occurrences in the Salla-Kuolayarvi belt (northern Karelia) were estimated based on the results of incremental heating of samples with simultaneous registration of helium flux. The values of apparent U-Th-He ages were calculated taking into account the contribution of the trapped component. Suitability of the mineral species for placing the age boundaries on the evolution of ore-bearing metasomatic rocks was considered on the basis of the calculated parameters of helium mobility in the lattice, as well as petrographic features of each individual sample.
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About the authors
M. A. Gannibal
Geological Institute of the Kola Scientific Center, Russian Academy of Sciences
Email: m.a.gannibal@gmail.com
Apatity, Russia
A. E. Gannibal
Geological Institute of the Kola Scientific Center, Russian Academy of Sciences
Email: m.a.gannibal@gmail.com
Apatity, Russia
A. V. Gudkov
Geological Institute of the Kola Scientific Center, Russian Academy of Sciences
Email: m.a.gannibal@gmail.com
Apatity, Russia
A. A. Kalinin
Geological Institute of the Kola Scientific Center, Russian Academy of Sciences
Email: m.a.gannibal@gmail.com
Apatity, Russia
M. O. Kashuk
Geological Institute of the Kola Scientific Center, Russian Academy of Sciences
Email: m.a.gannibal@gmail.com
Apatity, Russia
V. V. Kolobov
Center for Physical and Technical Problems of Northern Energy, Kola Scientific Center, Russian Academy of Sciences
Author for correspondence.
Email: m.a.gannibal@gmail.com
Apatity, Russia
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