Major volcanic events occurred millions of years ago that caused such climatic and biological upheaval that they drove some of the most devastating extinction events in Earth’s history. Now, scientists have shed new light on the timing and likely cause of these cataclysmic volcanic events. Surpri
New research suggests a slowing of continental plate movement was the critical event that enabled magma to rise to the Earth’s surface and deliver devastating knock-on impacts.
Surprisingly the new research suggests a slowing of continental plate movement was the critical event that enabled magma to rise to the Earth’s surface and deliver the devastating knock-on impacts. The study will be published today in leading international journalEarth’s history has been marked by major volcanic events, called Large Igneous Provinces .
The research team discovered that this time period, which was characterized by some of the most severe climatic and environmental changes ever, directly coincided with the occurrence of major volcanic activity and associated greenhouse gas release on the southern hemisphere, in what is currently known as southern Africa, Antarctica, and Australia.
“It seems it is only when the speed of continental plate movement slows down to near zero that magmas from mantle plumes can effectively make their way to the surface, causing major large igneous province volcanic eruptions and their associated climatic perturbations and mass extinctions.
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