Giant “stealth” magma surge triggered thousands of earthquakes beneath Atlantic island

In March 2022, thousands of earthquakes rattled São Jorge Island in Portugal's Azores archipelago after a huge body of magma (molten rock) surged upward from deep underground, according to a new study led by researchers at UCL (University College London). The magma traveled from more than 20 kilometers beneath Earth's surface before stopping just 1.6 kilometers below the island, narrowly avoiding an eruption.

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