BackThe Yellowstone Hotspot's Mysterious Origin May Be Linked to a Lost Tectonic Plate

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Ars Technica4/13/2026ScienceUnited States

The Yellowstone Hotspot's Mysterious Origin May Be Linked to a Lost Tectonic Plate

yellowstone farallon plate tectonic plate

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A new study proposes that the Yellowstone hotspot, a major geological phenomenon in North America, may be powered not by a traditional mantle plume, but by stresses created by the ancient, largely vanished Farallon tectonic plate.
This plate's subduction under the continent is thought to have created pathways for molten rock to reach the surface, explaining the unique volcanic activity in the region.

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A new study proposes that the Yellowstone hotspot, a major geological phenomenon in North America, may be powered not by a traditional mantle plume, but by stresses created by the ancient, largely vanished Farallon tectonic plate. This plate's subduction under the continent is thought to have created pathways for molten rock to reach the surface, explaining the unique volcanic activity in the region.

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The Yellowstone Hotspot's Mysterious Origin May Be Linked to a Lost Tectonic Plate

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