Under the ground, water is a compound of the hydroxyl group of oxygen and hydrogen atoms. It is in a petrified state, but earlier the Earth's mantle could not store such a large amount of water as it does now.
Experts from Harvard University were able to find out that billions of years ago, the mantle of our planet was much hotter than it is now. This suggests that she could not hold the current amount of water in herself. This suggests that even before the emergence of life, our planet was completely covered with water.
< p>Science reports this.
that the early Earth was covered in water has long been debated by scientists. As for the new study, the mantle, which the experts studied, retains water in a “petrified” state in two types of the olivine volcanic mineral: wadsleyite and ringwoodite.
Scientists have found that when the temperature of the mantle was much higher, these compounds had less ability to retain water. Water must have been on the surface for millions of years. At the same time, the planet cools down over time, and therefore the minerals underground can hold more water.