Abstract
The geological structure, age, and genesis of sedimentary—volcanogenic, metamorphic, and metasomatic rocks from the Terskii greenstone belt fringing the southern Imandra—Varzuga structure in the southeastern Kola Peninsula are discussed with defining main stages in endogenic activity of the region in the Late Archean and Early Proterozoic. The U-Pb method (SHRIMP-II, ID-TIMS, and Pb-LS techniques) was used to determine the age of volcano-sedimentary rocks of the Imandra Group as well as that of magmatic and superimposed metamorphic and metasomatic processes. The basic—intermediate metavolcanics of the Imandra Group are dated at 2.67 Ga, which corresponds to the Lopingian Gimol’skii Superhorizon (Late Archean). The Archean metavolcanics were subjected to Early Proterozoic regional metamorphism 2.1 Ga ago and metasomatic processes in the period of 1.85 to 1.77 Ga ago. The obtained data indicate multistage evolution of rock formation in the Terskii greenstone belt located in the southern flank of the Imandra—Varzuga structure in the Kola Peninsula.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
B. Yu. Astaf’ev, O. A. Voinova, A S. Voinov, and D. I. Matukov, “Geological Structure, Petrological Properties, and Age of the Upper Archean Imandra Group (Kola Peninsula). Archean Geology and Geodynamics,” in Materials of the 1st Russian Conference on Problems of Precambrian Geology and Geodynamics (Center of the Information Culture, St. Petersburg, 2005) [in Russian].
T. B. Bayanova, Age of Reference Geological Complexes in the Kola Region and Duration of Magmatism (Nauka, St. Petersburg, 2004) [in Russian].
R. G. Berman and L. Y. Aranovich., “Optimized Standard State and Solution Properties of Minerals,” Contrib. Mineral. Petrol. 126(1–2), 1–24 (1996).
L. P Black, S. L. Kamo, C. M. Allen, et al., “TEMORA 1: A New Zircon Standard for U—Pb Geochronology,” Chem. Geol. 200, 155–170 (2003).
J. S. Daly, V V Balaganskii, M. Ya, Timmerman, et al., “First Isotopic Data on Early Proterozoic Supracrustal Rocks of the Terskii Area, Kola Peninsula,” in Abstracts of the 3 rd All-Russian Meeting “General Problems of Precambrian Subdivision” (KNTs RAN, Apatity, 2000), pp. 86–89 [in Russian].
J. S. Daly, V V Balaganskii, M. Ya, Timmerman, et al., “Ion Microprobe U—Pb Zircon Geochronology and Isotopic Evidence Supporting a Tanscrustal Suture in the Lapland—Kola Orogen, Northern Fennoscandian Shield,” Precambr. Res. 105(2–4), 289–314 (2001).
V I. Fonarev, A. A. Grafchikov, and A. N. Konilov, “The system of Concordant Mineralogical Thermometers for Metamorphic Complexes,” in Physicochemical Analysis of Mineral Formation (Nauka, Moscow, 1989), pp. 96—126 [in Russian].
R. Frei and B. S. Kamber, “Single Mineral Pb-Pb Dating,” Earth Planet. Sci. Lett. 129, 261–268 (1995).
Geology of Ore Areas of the Murmansk Region. Appendix 3. Catalog of Geochronologic Data on the Northeastern Baltic Shield, Ed. By F.P. Mitrofanov (KNTs RAN, Apatity, 2002), pp. 16–52 [in Russian].
T. E. Krogh, “A Low-contamination Method for Hydrothermal Decomposition of Zircon and Extraction of U and Pb for Isotopic Age Determinations,” Geochim. Cosmochim Acta 37, 485–494 (1973).
V. K. Kuz’min, M. N. Naumov, N. G. Berezhnaya, and E. N. Lepikhina, “Geological Structure, Composition, and Age of the Ondomozero Massif, Northeastern Baltic Shield,” Dokl. Akad. Nauk 401(6) 1–5 (2005) [Doklady Earth Sciences 401, 386–390 (2005).
K. R. Ludwig, “PbDat for MS-DOS. Version 1.21,” Geol. Survey Open-File Rept. 8-542 1–35 (1991).
K. R. Ludwig, “User’s Manual for Isoplo/Ex, Version 2.10. A Geochronological Toolkit for Microsoft Excel,” Berkeley Geochronology Center Spec. Publ., No. la, 1–120 (1999a).
K. R. Ludwig, “ISOPLOT/Ex. Version 2.06. A Geochronological Toolkit for Microsoft Excel,” Berkeley Geochronology Center Spec. Publ., No. la, 1–49 (1999b).
K. R. Ludwig, “SQUID 1.00, A User’s Manual,” Berkeley Geochronology Center Spec. Publ., No. 2, 1–120 (2000).
Precambrian Geology of the USSR, Ed. by D.V Rundquist and F.P. Mitrofanov (Nauka, Leningrad, 1988) [in Russian].
The Early Precambrian of the Baltic Shield, Ed. by V. A. Glebovitskii Nauka, St. Petersburg, 2005) [in Russian].
The State Geological Map of the Russian Federation. Scale 1: 1000000 (New Series). Sheet Q-(35)-37 (“Kirovsk”+. Explanatory Notes and Set of Maps, Ed. by Yu.B. Bogdanov (VSEGEI, St. Petersburg, 2004) [in Russian].
I. S. Williams, U—Th—Pb Geochronology by Ionic Microprobe,” Rev. Econ Geol., No. 7, 1–35 (1998).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © B.Yu. Astaf’ev, O.A. Levchenkov, N.G. Rizvanova, O.A. Voinova, A.S. Voinov, L.K. Levskii, A.F. Makeev, K.I. Lokhov, 2010, published in Stratigrafiya. Geologicheskaya Korrelyatsiya, 2010, Vol. 18, No. 1, pp. 3–17.
Rights and permissions
About this article
Cite this article
Astaf’ev, B.Y., Levchenkov, O.A., Rizvanova, N.G. et al. Geological structure and isotopic—geochronologic study of rocks from the Strel’na segment of the Terskii Greenstone belt, Kola Peninsula. Stratigr. Geol. Correl. 18, 1–15 (2010). https://doi.org/10.1134/S0869593810010016
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0869593810010016