Linking mantle plumes, large igneous provinces and environmental catastrophes

Stephan V. Sobolev (), Alexander V. Sobolev (), Dmitry V. Kuzmin, Nadezhda A. Krivolutskaya, Alexey G. Petrunin, Nicholas T. Arndt, Viktor A. Radko and Yuri R. Vasiliev
Additional contact information
Stephan V. Sobolev: Deutsches GeoForschungsZentrum GFZ, Telegrafenberg
Alexander V. Sobolev: ISTerre, CNRS, University Joseph Fourier, Maison des Géosciences, 1381 rue de la Piscine, BP 53, 38041 Grenoble Cedex 9, France
Dmitry V. Kuzmin: Max Planck Institute for Chemistry, 27 J.-J.-Becher-Weg
Nadezhda A. Krivolutskaya: V. I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, 19 ul. Kosygina, Moscow, 119991, Russia
Alexey G. Petrunin: Deutsches GeoForschungsZentrum GFZ, Telegrafenberg
Nicholas T. Arndt: ISTerre, CNRS, University Joseph Fourier, Maison des Géosciences, 1381 rue de la Piscine, BP 53, 38041 Grenoble Cedex 9, France
Viktor A. Radko: Limited Liability Company ‘Norilskgeologiya’ Norilsk, PO Box 889, 663330, Russia
Yuri R. Vasiliev: V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences, 3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia

Nature, 2011, vol. 477, issue 7364, 312-316

Abstract: The geology of large-scale volcanism The Siberian Traps, a large region of volcanic rock produced more than 200 million years ago by a massive volcanic event, is a prime example of a large igneous province (LIP). Stephan Sobolev and colleagues present petrological evidence for a large amount of dense recycled oceanic crust in the head of the plume that was responsible for forming the Siberian Traps. Using this, they develop a thermomechanical model that predicts the observed lack of pre-magmatic uplift or lithospheric extension in the region. The model also indicates that massive degassing of carbon dioxide and hydrogen chloride from the plume could alone trigger a mass extinction, and predicts it happening before the main volcanic phase, in agreement with stratigraphic and geochronological data for the Siberian Traps and other LIPs.

Date: 2011
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DOI: 10.1038/nature10385

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