AI Insight
Ancient rocks from Western Australia, dating back over 3 billion years, provide evidence that water was penetrating deep into Earth's interior before modern plate tectonics fully developed. Researchers propose a process called "dripduction" in which water-rich segments of the early crust periodically sank into the mantle. This submerged water subsequently contributed to magma formation and triggered volcanic activity on the early Earth.
Why it matters
This finding challenges previous assumptions about when and how water cycling between Earth's surface and interior began, suggesting deep water recycling occurred much earlier than the establishment of modern plate tectonics. Understanding these ancient processes helps explain how early Earth's geology and potentially its atmosphere evolved, which has implications for theories about the development of habitable conditions on our planet.
Understand the Science
Ancient rocks from Western Australia suggest water was reaching deep inside Earth more than three billion years ago, long before modern plate tectonics may have fully developed. Researchers propose that water-rich pieces of crust periodically sank into the mantle through a process they call “dripduction.” The buried water then helped produce magma and volcanic eruptions.
Source: Scientists find water was fueling volcanoes 3 billion years ago