Siberian Traps volcaniclastic rocks and the role of magma-water interactions

Benjamin A. Black, Benjamin P. Weiss, Linda Elkins-Tanton, Roman V. Veselovskiy, Anton Latyshev

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The Siberian Traps are one of the largest known continental flood basalt provinces and may be causally related to the end-Permian mass extinction. In some areas, a large fraction of the Siberian Traps volcanic sequence consists of mafic volcaniclastic rocks. Here, we synthesize paleomagnetic, petrographic, and field data to assess the likely origins of these volcaniclastic rocks and their significance for the overall environmental impact of the eruptions. We argue that magmawaterinteractions, including both lava-water interactions and phreatomagmatic explosions in vents, were important components of SiberianTraps magmatism. Phreatomagmatic episodes may have generated tall water-rich eruption columns, simultaneously promoting removal of highly soluble volcanic gases such as HCl and potentially delivering additional sulfur to the upper atmosphere.

Original languageEnglish (US)
Pages (from-to)1437-1452
Number of pages16
JournalBulletin of the Geological Society of America
Volume127
Issue number9-10
DOIs
StatePublished - 2015

ASJC Scopus subject areas

  • Geology

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