Scholarlink

Abstract <p>This article describes the first findings of glendonites (pseudomorph after calcium carbonate hexahydrate ikaite, which crystallize at near-freezing temperatures) from the Bazhenovo Formation (West Siberia, Upper Jurassic–Lower Cretaceous). Glendonites originate from the depressed structures of the central part of the Frolovskaya Megadepression and the deepest areas of the West Siberian paleobasin. Glendonite findings have received a reliable stratigraphic reference and originate from the interval of the Ryazanian Regional Stage. Based on the stable isotopic composition, we propose ikaite crystallized and transformed during organoclastic sulfate-reduction in the bottom sediments. Ikaite crystallization might be caused by the penetration of bottom cold currents from the Paleoarctic basin due to sea level fluctuations during the Ryazanian Stage.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The First Finds of Glendonites in the Upper Jurassic–Lower Cretaceous Bazhenovo Formation (West Siberia, Frolovskaya Megadepression) and Their Paleogeographic Significance

  • 期刊论文

  • 发表日期：

    2025年2月1日

查看全文
  • K. Yu. Vasileva,
  • M. A. Rogov,
  • I. V. Panchenko,
  • V. A. Zakharov,
  • V. B. Ershova,
  • Yu. A. Gatovsky,
  • E. V. Mokrushina

摘要

Abstract

This article describes the first findings of glendonites (pseudomorph after calcium carbonate hexahydrate ikaite, which crystallize at near-freezing temperatures) from the Bazhenovo Formation (West Siberia, Upper Jurassic–Lower Cretaceous). Glendonites originate from the depressed structures of the central part of the Frolovskaya Megadepression and the deepest areas of the West Siberian paleobasin. Glendonite findings have received a reliable stratigraphic reference and originate from the interval of the Ryazanian Regional Stage. Based on the stable isotopic composition, we propose ikaite crystallized and transformed during organoclastic sulfate-reduction in the bottom sediments. Ikaite crystallization might be caused by the penetration of bottom cold currents from the Paleoarctic basin due to sea level fluctuations during the Ryazanian Stage.