Ancient Water Fueled Earth's First Volcanoes

A groundbreaking study indicates that water recycling between Earth's mantle and surface began as early as three billion years ago. This process generated magma, fueling volcanoes that were instrumental in building the planet's initial continents, a finding published in Nature Communications. Researchers analyzed the oldest volcanic rocks from Western Australia's Pilbara Craton, providing a rare glimpse into Earth's distant past.

The research suggests that water significantly influenced the planet's interior and catalyzed volcanic activity during its early stages. This ancient phenomenon, termed 'dripduction,' involved water-saturated crust seeping into the hot mantle, releasing water, and creating magmas. While water recycling through plate tectonics continues today, this discovery shows a similar process was active much earlier in Earth's history, shaping its evolution and habitability.