TY - JOUR
T1 - Siberian Traps volcaniclastic rocks and the role of magma-water interactions
AU - Black, Benjamin A.
AU - Weiss, Benjamin P.
AU - Elkins-Tanton, Linda
AU - Veselovskiy, Roman V.
AU - Latyshev, Anton
N1 - Publisher Copyright:
© 2015 Geological Society of America.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
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U2 - 10.1130/B31108.1
DO - 10.1130/B31108.1
M3 - Article
AN - SCOPUS:84947792878
SN - 0016-7606
VL - 127
SP - 1437
EP - 1452
JO - Bulletin of the Geological Society of America
JF - Bulletin of the Geological Society of America
IS - 9-10
ER -