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[1] Flood basalts [2] 
- When continental plates drift over mantle plumes and the earth melts and basalt lava floods out - E.g. Iceland lava flows out of the mantle and floods across the ocean floor or on land - Lava floods can be the size of continents and result in dust and debris that enter the atmosphere and cloud the sun - Causes a loss in primary productivity and an increase in carbon dioxide and sulphur dioxide
Carboniferous and Permian Foreign Language Flashcards - Cram.com