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Abstract <p>The results of the lithological and geochemical analysis of bottom sediments collected in the southwestern part of the Kara shelf in the area of development of gas-saturated deposits in a paleovalley at a depth of 112 m are presented. It has been established that the accumulation of the Holocene marine sediments occurred under conditions of fluid inflow as a result of degradation of permafrost and destruction of its gas hydrates, which are apparently suppliers of isotopically heavy waters to the studied strata.</p>

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Lithological Composition of Bottom Sediments in the Area of Fluid Discharge in the Kara Sea

  • 期刊论文

  • 发表日期：

    2025年7月4日

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  • E. A. Moroz,
  • E. A. Eremenko,
  • A. V. Ermakov,
  • A. P. Denisova,
  • A. V. Drazdova,
  • R. A. Ananiev,
  • V. V. Arkhipov,
  • S. V. Maznev

摘要

Abstract

The results of the lithological and geochemical analysis of bottom sediments collected in the southwestern part of the Kara shelf in the area of development of gas-saturated deposits in a paleovalley at a depth of 112 m are presented. It has been established that the accumulation of the Holocene marine sediments occurred under conditions of fluid inflow as a result of degradation of permafrost and destruction of its gas hydrates, which are apparently suppliers of isotopically heavy waters to the studied strata.