On the age of the most ancient pegmatites of the Svecofennian block in the Northern Ladoga region (SE of the Fennoscandian shield)
Keywords:
U-Pb dating, monazite, pegmatite, granite, Svecofennian complex
Abstract
Introduction: In the Svecofennian block of the Northern Ladoga region, where the Early Proterozoic metamorphic complex is developed, U-Pb dating of monazite revealed the most ancient granite pegmatites for this region, marking the completion of the active phase of magmatic and metamorphic development of the structures of the region. Previous studies of the svecofennides of the Northern Ladoga region estimated the main phase of endogenic activity in the region at an age interval of 1881–1860 Ma. These estimates were based on U-Pb dating of zircon and monazite from various granitoids and associated pegmatitic veins. Methods: To determine the age of the pegmatite vein, a U-Pb geochronological study (ID-TIMS) was carried out. Results and discussion: The identified age of the pegmatitic vein we studied (1869 ± 5 Ma) turned out to be somewhat older than the previously known ages of pegmatites and granites (1858–1860 Ma), which further narrows the time range of intense plutono-metamorphic activities in the region. A similar very short duration of the active phase of plutono-metamorphic events (ca. 15 Ma) was previously revealed when dating syn- and post-kinematic granites from the Central Finnish granitoid complex, located northwest of the Northern Ladoga region. Conclusion: The coincidence of the duration of endogenous activity in the southern domain of the Ladoga region with the duration established for the Central Finnish granitoid complex makes it possible to make closer and more accurate correlations when analyzing scenarios for the tectonic development of Proterozoic rocks in these adjacent regions.
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References
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2. Baltybaev Sh. K., Levchenkov O. A., Berezhnaja N. G., Levskij L. K., Makeev A. F., Jakovleva S. Z. Vremja i dlitel'nost' svekofennskoj plutono-metamorficheskoj aktivnosti na jugovostoke Baltijskogo shhita, Priladozh'e [Age and duration of Svecofennian plutono-metamorphic activity in the Ladoga area, southeastern Baltic Shield]. Petrologija – Petrology, 2004a, vol. 12, no. 4, pp. 330–347 (In. Russ.)
3. Baltybaev Sh. K., Levchenkov O. A., Glebovickij V. A. Ocenka vremeni regional'noj postmigmatitovoj kalishpatizacii po dannym U-Pb datirovanija monacita (Metamorficheskij kompleks Severnogo Priladozh'ja, Rossija) [Timing of the regional postmigmatitic K-feldspar mineralization on the base of U-Pb dating of monazite (Metamorphic Complex of the Northern Ladoga Region)]. Doklady Akademii Nauk –Doklady Earth Sciences, 2010, vol. 430, no. 2, pp. 186–189 (In Russ.)
4. Baltybaev Sh. K., Glebovitsky V. A., Kozyreva I. V., Shuldiner V. I. Meierskii nadvig – glavnyi element stroeniya sutury na granitse Karel’skogo kratona i Svekofennskogo poyasa v Priladozh’e, Baltiiskii shchit [The Meyeri Thrust: The main element of the suture at the boundary between the Karelian Craton and the Svecofennian belt in the Ladoga region of the Baltic Shield]. Doklady Akademii Nauk – Doklady Earth Sciences, 1996, vol. 348, no. 3, pp. 353–356 (In Russ.)
5. Baltybaev Sh. K., Levchenkov O. A., Glebovitsky V. A., Levskii L. K., Matukov D. I., Berezhnaya N. G. U-Pb dating of zircon from the Svecofennian plagiogranite intrusion, Baltic Shield: Specific features of the Upper and Lower intercepts. Doklady Akademii Nauk –Doklady Earth Sciences, 2005a, vol. 403, no. 5, pp. 750–753 (In Russ.)
6. Konopelko D., Eklund O. Timing and geochemistry of potassic magmatism in the eastern part of the Svecofennian domain, NW Ladoga Lake Region, Russian Karelia. Precambrian Research, 2003, vol. 120, pp. 37–53. DOI
7. Baltybaev Sh. K., Rizvanova N. G., Kuznecov A. B., Petrakova M. E., Vivdich Je. S. Late Orogenic Granitoids of the Tervu Agmatitic Zone in the Southeastern Part of the Svecofennian Belt (Northern Ladoga Area, Russia). Doklady Earth Sciences, 2023, vol. 511, no. 2, pp. 685–691. (In Russ.) DOI
8. Baltybaev Sh. K., Levchenkov O. A. Vulkanity v svekofennidah Priladozh'ja i rezul'taty U-Pb, Pb-Pb datirovanija porod raznogo genezisa kak osnova dlja korreljacii svekofennskih sobytij [Volcanics in svecofennides of the Ladoga region and results of U-Pb and Pb-Pb dating of rocks and minerals as a basis for correlation of Svecofennian events]. Stratigrafija Geologicheskaja korreljacija – Stratigraphy and Geological correlation, 2005b, vol. 13, no. 2, pp. 119–133 (In Russ.)
9. Baltybaev Sh. K., Glebovitsky V. A., Kozyreva I. V., Konopelko D. L., Levchenkov O. A., Sedova I. S., Shuldiner V. I. Geologiya i petrologiya svekofennid Priladozh'ya [Geology and petrology of svecofennids in the Ladoga area]. Saint-Petersburg, University Press publ., 2000, 200 p. (In. Russ.)
10. Baltybaev Sh. K., Sal'nikova E. B., Glebovickij V. A., Berezhnaja N. G., Jakovleva S. Z., Kovach V. P. Kuznechenskij massiv kalievyh porfirovidnyh granitov: rezul'taty U-Pb datirovanija i obosnovanie tektonicheskoj pozicii [The Kuznechensky massif of potassic porphyritic granites: results of U-Pb dating and substantiation of the tectonic position (Baltic shield)]. Doklady Akademii Nauk –Doklady Earth Sciences, 2004b, vol. 398, no. 7, pp. 1024–1028 (In Russ.)
11. Middlemost E. A. K. Naming materials in the magma/igneous rock system. Earth-Science Reviews, 1994, vol. 37, pp. 215– 224. DOI
12. Frost B. R., Barnes C. G., Collins W. J., Arculus R. J., Ellis D. J., Frost C. D. A geochemical classification for granitic rocks. Journal of Petrology, 2001, vol. 42, pp. 2033–2048. DOI
13. Laurent O., Martin H., Moyen J. F., Doucelance R. The diversity and evolution of late-Archean granitoids: evidence for the onset of ’modern-style’ plate tectonics between 3.0 and 2.5 Ga. Lithos, 2014, vol. 205, pp. 208–235. DOI
14. Ludwig K. R. PbDat 1.21 for MS-dos: a computer program for IBM-PC compatibles for processing raw Pb-U-Th isotope data. Version 1.07. U.S. Geological Survey. Open File Report, 1991. 35 p.
15. Ludwig K. R. Isoplot/Ex rev. 2.49. A geochronological toolkit for Microsoft Excel. Berkeley Geochronology Center, Special Publication, 2001, no. 1a. 55 p.
16. Currie K. L., Whalen J. B., Davis W. J., Longstaffe F. J., Cousens B. L. Geochemical evolution of peraluminous plutons in southern Nova Scotia, Canada–a pegmatite-poor suite. Lithos, 1998, vol. 44, pp. 117–140.
17. Skytta P., Manttari I. Structural setting of late Svecofennian granites and pegmatites in Uusimaa Belt, SWFinland: Age constraints and implications for crustal evolution. Precambrian Research, 2008, vol. 164, pp. 86–109. DOI
18. Thomas R., Davidson P. The missing link between granites and granitic pegmatites. Journal of Geosciences, 2013, vol. 58, pp. 183–200. DOI
19. Xiong Y.-Q., Jiang Sh.-Y., Wen Ch.-H., Yu H.-Y. Granite– pegmatite connection and mineralization age of the giant Renli Ta-Nb deposit in South China: constraints from U–Th–Pb geochronology of coltan, monazite, and zircon. Lithos, 2020, pp. 358–359. DOI
20. Egorov A. V., Arzamastsev A. A. Ta-Nb mineralizaciya v keramicheskih pegmatitah Severnogo Priladozh'ya: sostav i usloviya obrazovaniya [Ta-Nb mineralization of ceramic pegmatites of the Northern Ladoga Region: composition and formation conditions]. Trudy Fersmanovskoi nauchnoi sessii Geologicheskij institut Kol'skogo nauchnogo centra RAN – Proceedings of the Fersman Scientific Session of Geological Institute of Kola Scientific Centre of RAS, 2018, vol. 15, pp. 136–139. DOI
21. Rosing-Schow N., Andersen T., Müller A. Lead isotopes and the sources of granitic magmas: The Sveconorwegian granite and pegmatite province of Southern Norway. Minerals, 2022, vol. 12, no. 7, pp. 878. DOI
22. Ripp, G. S., Doroshkevich, A. G., Lastochkin, E. I., Izbrodin, I. A. Isotope and geochemical characteristics of rocks from the Oshurkovo apatite-bearing massif, Western Transbaikalia. Geochemistry International, 2014, vol. 52, no. 4, pp. 271–286. DOI
23. Nironen M., Elliott B. A., Rämö O. T. 1.88-1.87 Ga postkinematic intrusions of the Central Finland Granitoid Complex: a shift from C-type to A-type magmatism during lithospheric convergence. Lithos, 2000, vol. 53, pp. 37–58. DOI
Published
2023-12-25
How to Cite
Baltybaev, S. K., Vivdich, E. S., Lezzhov, A. M., Petrakova, M. E., Rizvanova, N. G., & Yurchenko, A. V. (2023). On the age of the most ancient pegmatites of the Svecofennian block in the Northern Ladoga region (SE of the Fennoscandian shield). Proceedings of Voronezh State University. Series: Geology, (4), 36-46. https://doi.org/10.17308/geology/1609-0691/2023/4/36-46
Section
Petrology, Volcanology, Geochemistry
