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Abstract— <p>Patterns of the chemical composition of accessory chrome spinels in Mg-high volcanic rocks penetrated by the Vostochno-Askinskaya 1 deep well were studied to determine their original nature. A comparison with published data made it possible to reconstruct their complex formation history. At the first stage, a komatiitic magma crystallized, followed by the formation of picrites, and finally by aqueous-carbonate metamorphism leading to chrysotile + tremolite + magnetite + calcite paragenesis.</p>

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On Komatiite-Like Volcanics on the Eastern Margin of the East European Platform: Inferences from Chrome Spinel Compositions

  • 期刊论文

  • 发表日期：

    2026年3月1日

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  • I. S. Chashchukhin,
  • A. Yu. Kissin

摘要

Abstract—

Patterns of the chemical composition of accessory chrome spinels in Mg-high volcanic rocks penetrated by the Vostochno-Askinskaya 1 deep well were studied to determine their original nature. A comparison with published data made it possible to reconstruct their complex formation history. At the first stage, a komatiitic magma crystallized, followed by the formation of picrites, and finally by aqueous-carbonate metamorphism leading to chrysotile + tremolite + magnetite + calcite paragenesis.