Ancient Earth may have made its own water: Rock circulating in mantle feeds world's oceans even today, evidence suggests
Wednesday, December 17, 2014 - 17:31
in Earth & Climate
In a finding that meshes well with recent discoveries from the Rosetta mission, researchers have discovered a geochemical pathway by which Earth makes it own water through plate tectonics. This finding extends the planet's water cycle to billions of years—and suggests that enough water is buried in the deep earth right now to fill the Pacific Ocean.