Early Earth’s belly held onto its water #worldresearchawards #researchawards
Early Earth got much of its water from relentless bombardment by water-rich asteroids and icy comets. Now, scientists say the young planet had a way to hold onto much more of that water than once thought: Rocks deep in Earth’s belly may have contained up to 100 times more water than previously estimated , researchers report December 11 in Science . That adds up to perhaps a whole ocean’s worth of water once stowed away in the ancient mantle rocks. Using laboratory experiments that re-created the extreme conditions of Earth’s deep mantle, geochemist Wenhua Lu of the Chinese Academy of Sciences in Guangzhou and colleagues investigated how much water bridgmanite, one of Earth’s first minerals, could actually hold. As the heat increased, the bridgmanite was able to incorporate more and more water into its crystal structure. “The findings … add another vital piece to an intricate and multifaceted puzzle,” writes petrologist Michael Walter of Carnegie Science ...