The basalt pipes of the Tunguska Basin (Siberia, Russia): High temperature processes and volatile degassing into the end-Permian atmosphere
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- 作者：Alexander G. Polozova ; b ; a.g.polozov@mail.ru" class="auth_mail" title="E-mail the corresponding author ; Henrik H. Svensenb ; Sverre Plankeb ; c ; Svetlana N. Grishinad ; Kirsten E. Fristade ; Dougal A. Jerramb ; f ; g
- 关键词：Tunguska Basin ; Magma&ndash ; brine interaction ; Diatreme ; End-Permian crisis ; Flood basalts ; Large igneous province
- 刊名：Palaeogeography, Palaeoclimatology, Palaeoecology
- 出版年：2016
- 出版时间：1 January 2016
- 年：2016
- 卷：441
- 期：part_P1
- 页码：51-64
- 全文大小：4035 K
文摘
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More than three hundreds of mineralized diatremes are found in the Tunguska Basin.
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We claim that studied Sholokhovsk diatreme has a phreatomagmatic origin.
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Halogen-enriched mineral assemblages originate from magma–brine interaction.
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Diatremes acted as degassing channels for halogen-rich volatiles.
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Gas venting throughout pipes in the Tunguska Basin triggered mass extinction.