Hidden magma discovered beneath dormant Cascade Range volcanoes

New research has found magma reservoirs beneath dormant volcanoes in the Cascade Range remain intact for thousands of years, challenging the long-standing belief that magma bodies dissipate over time after eruptions and reshaping understanding of volcanic activity. Previously, large magma bodies were thought to indicate an increased likelihood of eruption, but the study suggests they are a persistent feature of volcanic systems rather than a sign of imminent activity.

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