The paper considers the age, composition, and genesis of granitoids of the Soktui massif, a petrotype of the Kukul’bei Complex of Mesozoic rare-metal granites in Transbaikalia. The Soktui massif is heterogeneous; it comprises several petrographic varieties: monzogranite–monzoleucogranites and microleucogranites of the major intrusive phase and alaskites, alkali–feldspathic granite porphyry, granodiorites, and quartz syenites of the phase of additional intrusions. According to the obtained U–Pb geochronological data, the ages of all varieties are the same within the analytical error and correspond to the Early Cretaceous. The granitoids are diverse in geochemical characteristics: The monzogranite–monzoleucogranites of the major intrusive phase belong to the rare-metal plumasite type, and the rocks of the phase of additional intrusions show signs of A-type granitoids. The geochemical and isotope characteristics of the rocks confirm the contribution of both continental crustal substrates and deep-seated mantle-derived magmas to their formation. The contents of volatiles in micas and the composition of fluid and melt inclusions indicate the involvement of two types of fluids in the magma generation: reduced chloride (probably mantle) and more oxidized fluoride (presumably of lower-crust origin). All melts were generated at depths of no more than 30 km, and the depth of the massif formation was shallower than 8 km. Based on the obtained data, we propose a model for the formation of the massif rocks.
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May 01, 2025
EARLY CRETACEOUS GRANITOIDS OF THE SOKTUI MASSIF: COMPOSITION AND PETROGENESIS (eastern Transbaikalia) Available to Purchase
A.V. Naryzhnova;
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia2
Novosibirsk State University, ul. Pirogova 1, Novosibirsk, 630090, Russia✉
E-mail: [email protected]
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N.N. Kruk;
N.N. Kruk
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia2
Novosibirsk State University, ul. Pirogova 1, Novosibirsk, 630090, Russia
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S.Z. Smirnov;
S.Z. Smirnov
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia2
Novosibirsk State University, ul. Pirogova 1, Novosibirsk, 630090, Russia3
Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia
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P.D. Kotler;
P.D. Kotler
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia4
Kazan Federal University, ul. Kremlyovskaya 18, korp. 1, Kazan, 420008, Russia
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A.V. Kulikova;
A.V. Kulikova
4
Kazan Federal University, ul. Kremlyovskaya 18, korp. 1, Kazan, 420008, Russia
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N.S. Bortnikov;
N.S. Bortnikov
5
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017, Russia
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V.S. Antipin;
V.S. Antipin
6
A.P. Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences, ul. Favorskogo 1a, Irkutsk, 664033, Russia
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E.N. Moroz;
E.N. Moroz
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia
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A.S. Volosov;
A.S. Volosov
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia
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A.S. Borisenko
A.S. Borisenko
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia
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1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia2
Novosibirsk State University, ul. Pirogova 1, Novosibirsk, 630090, Russia
N.N. Kruk
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia2
Novosibirsk State University, ul. Pirogova 1, Novosibirsk, 630090, Russia
S.Z. Smirnov
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia2
Novosibirsk State University, ul. Pirogova 1, Novosibirsk, 630090, Russia3
Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia
P.D. Kotler
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia4
Kazan Federal University, ul. Kremlyovskaya 18, korp. 1, Kazan, 420008, Russia
A.V. Kulikova
4
Kazan Federal University, ul. Kremlyovskaya 18, korp. 1, Kazan, 420008, Russia
N.S. Bortnikov
5
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017, Russia
V.S. Antipin
6
A.P. Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences, ul. Favorskogo 1a, Irkutsk, 664033, Russia
E.N. Moroz
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia
A.S. Volosov
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia
A.S. Borisenko
1
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia✉
E-mail: [email protected]
Publisher: Novovsibirsk State University
Received:
08 Oct 2024
Accepted:
26 Dec 2024
First Online:
21 Mar 2025
Online ISSN: 1878-030X
Print ISSN: 1068-7971
© 2025, Novosibirsk State University
Novosibirsk State University
Russ. Geol. Geophys. (2025) 66 (5): 570–592.
Article history
Received:
08 Oct 2024
Accepted:
26 Dec 2024
First Online:
21 Mar 2025
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CitationA.V. Naryzhnova, N.N. Kruk, S.Z. Smirnov, P.D. Kotler, A.V. Kulikova, N.S. Bortnikov, V.S. Antipin, E.N. Moroz, A.S. Volosov, A.S. Borisenko; EARLY CRETACEOUS GRANITOIDS OF THE SOKTUI MASSIF: COMPOSITION AND PETROGENESIS (eastern Transbaikalia). Russ. Geol. Geophys. 2025;; 66 (5): 570–592. doi: https://doi.org/10.2113/RGG20244823
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Index Terms/Descriptors
- absolute age
- alaskite
- Asia
- chemical composition
- Commonwealth of Independent States
- Cretaceous
- dates
- fluid inclusions
- fluorine
- geochemistry
- granite porphyry
- granites
- granodiorites
- halogens
- igneous rocks
- inclusions
- isotope ratios
- isotopes
- lithium ores
- lithogeochemistry
- Lower Cretaceous
- melt inclusions
- Mesozoic
- metal ores
- metallogeny
- metals
- mineral composition
- monzogranite
- Nd-144/Nd-143
- neodymium
- niobium ores
- O-18/O-16
- oxygen
- plutonic rocks
- quartz syenite
- rare earths
- Russian Federation
- stable isotopes
- syenites
- tantalum ores
- trace elements
- Transbaikalia
- tungsten ores
- U/Pb
- volatile elements
- Zabaykalskiy Russian Federation
- Kukul'bei Complex
- Soktui Massif
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