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Doklady Earth Sciences

, Volume 482, Issue 1, pp 1168–1172 | Cite as

The Strontium Isotopic Composition in Glendonites of the Middle Jurassic in Northern Siberia

  • M. A. Rogov
  • A. B. Kuznetsov
  • G. V. Konstantinova
  • T. L. Turchenko
Geochemistry

Abstract

The Sr isotope composition in glendonites from two sections of the Middle Jurassic of Northern Siberia has been determined for the first time. Glendonite was formed by the replacement of icite by calcite during diagenesis. The 87Sr/86Sr in most of the samples of glendonites (0.70687–0.70715) is insignificantly lower than this ratio in the Late Bathonian–Early Bajocian ocean. This may indicate a contribution from the Callovian seawater in the formation of individual calcite generations or the influence of methanogenic fluid of deep origin.

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • M. A. Rogov
    • 1
    • 2
  • A. B. Kuznetsov
    • 2
    • 3
  • G. V. Konstantinova
    • 3
  • T. L. Turchenko
    • 3
  1. 1.Geological InstituteRussian Academy of SciencesMoscowRussia
  2. 2.St. Petersburg State UniversitySt. PetersburgRussia
  3. 3.Institute of Precambrian Geology and GeochronologyRussian Academy of SciencesSt. PetersburgRussia

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