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New research published in 'Geology' by scientists from Utrecht University suggests that the formation of the supercontinent Pangea, which dominated Earth's geography around 335 million years ago, was driven by a massive mantle plume originating deep within the Earth's interior. This plume, estimated to be 1,000 kilometers in diameter, likely destabilized the overlying lithosphere, triggering the volcanic activity and tectonic shifts necessary for continental collision and assembly.
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Why It’s Fascinating
Understanding the precise mechanisms behind supercontinent cycles is fundamental to comprehending Earth's geological evolution. While the role of plate tectonics is well-established, this research highlights a potentially dominant internal driver. The sheer scale of the proposed mantle plume is astounding, implying that major continental configurations might be influenced by colossal, deep-Earth processes over immense timescales. This discovery prompts a re-evaluation of models for supercontinent formation, suggesting a more dynamic interplay between internal mantle dynamics and surface geological events. It also raises questions about the frequency and intensity of such mega-plumes throughout Earth's history and their potential impact on global climate and the development of life.
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