TY - JOUR
T1 - Magnitude and consequences of volatile release from the Siberian Traps
AU - Black, Benjamin A.
AU - Elkins-Tanton, Linda T.
AU - Rowe, Michael C.
AU - Peate, Ingrid Ukstins
N1 - Funding Information:
This study was funded by grant EAR-0807585 from NSF Continental Dynamics, and supplemented by the MIT Wade Fund. The American Museum of Natural History graciously provided maymechite samples collected by Valeri Fedorenko. NSF grant EAR-0439888 supported the digital imaging lab, melt inclusion preparation supplies and salary of Ingrid Ukstins Peate. The gas-mixing furnace lab at University of Iowa was established through funds from National Science Foundation grant EAR-0609652 and University of Iowa start-up funds to Ingrid Ukstins Peate. Roman Veselovskiy, Vladimir Pavlov, and Seth Burgess were valued collaborators during field work. The authors gratefully thank Tim Grove, Nilanjan Chatterjee, Nobumichi Shimizu, Chien Wang, and Jay Thompson. Paul Wallace, Stephen Self, Thorvaldur Thordarson, and an anonymous reviewer provided thoughtful comments that greatly improved the quality of this manuscript.
PY - 2012/2/1
Y1 - 2012/2/1
N2 - The eruption of the Siberian Traps flood basalts has been invoked as a trigger for the catastrophic end-Permian mass extinction. Quantitative constraints on volatile degassing are critical to understanding the environmental consequences of volcanism. We measured sulfur, chlorine, and fluorine in melt inclusions from the Siberian Traps and found that concentrations of these volatiles in some magmas were anomalously high compared to other continental flood basalts. For the ten samples for which we present data, volatile concentrations in individual melt inclusions range from less than the detection limit to 0.51. wt.% S, 0.94. wt.% Cl, and 1.95. wt.% F. Degassing from the Siberian Traps released approximately ~6300-7800. Gt S, ~3400-8700. Gt Cl, and ~7100-13,600. Gt F. These large volatile loads, if injected into the stratosphere, may have contributed to a drastic deterioration in global environmental conditions during the end-Permian.
AB - The eruption of the Siberian Traps flood basalts has been invoked as a trigger for the catastrophic end-Permian mass extinction. Quantitative constraints on volatile degassing are critical to understanding the environmental consequences of volcanism. We measured sulfur, chlorine, and fluorine in melt inclusions from the Siberian Traps and found that concentrations of these volatiles in some magmas were anomalously high compared to other continental flood basalts. For the ten samples for which we present data, volatile concentrations in individual melt inclusions range from less than the detection limit to 0.51. wt.% S, 0.94. wt.% Cl, and 1.95. wt.% F. Degassing from the Siberian Traps released approximately ~6300-7800. Gt S, ~3400-8700. Gt Cl, and ~7100-13,600. Gt F. These large volatile loads, if injected into the stratosphere, may have contributed to a drastic deterioration in global environmental conditions during the end-Permian.
KW - End-Permian
KW - Large igneous provinces
KW - Mass extinction
KW - Siberian Traps
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U2 - 10.1016/j.epsl.2011.12.001
DO - 10.1016/j.epsl.2011.12.001
M3 - Article
AN - SCOPUS:84856619517
VL - 317-318
SP - 363
EP - 373
JO - Earth and Planetary Sciences Letters
JF - Earth and Planetary Sciences Letters
SN - 0012-821X
ER -