Doklady Earth Sciences

, Volume 472, Issue 1, pp 11–15 | Cite as

The first Sm–Nd isotope–geochemical data on the Paleoproterozoic age of metamorphic rocks from the crystalline basement of the Yurovsk rise (Okhotsk massif)

  • V. K. Kuzmin
  • E. S. Bogomolov
  • V. A. Glebovitsky


Rocks with Paleoproterozoic Sm–Nd model ages (T Nd(DM) = 2096–2350 Ma) are the sources of protoliths with gneiss, amphibolite, marble, and calciphyre of Yurovsk rise. This fact makes possible estimation of the lower age boundary of the formation of the crystalline basement of Yurovsk rise as Paleoproterozoic. According to the results of Sm–Nd, U–Pb (SHRIMP), and Pb–Pb geochronological studies, two isotope provinces are distinguished within the crystalline basement of the Okhotsk massif. The Paleoarchean province occupies the territory of Kukhtui rise, in which crust-forming processes played a key role (3250–3650 Ma). The Paleoproterozoic province includes Yurovsk rise, in which the major stages of crust formation have an age of 1900–2350 Ma.


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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • V. K. Kuzmin
    • 1
  • E. S. Bogomolov
    • 1
    • 2
  • V. A. Glebovitsky
    • 2
    • 3
  1. 1.Karpinskii Russian Geological Research InstituteSt. PetersburgRussia
  2. 2.Institute of Precambrian Geology and Geochronology, Russian Academy of SciencesSt. PetersburgRussia
  3. 3.St. Petersburg State UniversitySt. PetersburgRussia

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