News tagged with upper mantle

What is the temperature of the Earth's crust?

As you may recall learning in geology class, the Earth is made up of distinct layers. The further one goes towards the center of the planet, the more intense the heat and pressure becomes. Luckily, for those of us living ...

dateSep 19, 2016 in Earth Sciences
shares28 comments 0

Is old rock really as 'solid as a rock'?

In the course of billions of years continents break up, drift apart, and are pushed back together again. The cores of continents are, however, geologically extremely stable and have survived up to 3.8 billions of years. These ...

dateSep 08, 2015 in Earth Sciences
shares30 comments 0

Probing iron chemistry in the deep mantle

Carbonates are a group of minerals that contain the carbonate ion (CO32-) and a metal, such as iron or magnesium. Carbonates are important constituents of marine sediments and are heavily involved in the planet's deep carbon ...

dateMay 15, 2015 in Earth Sciences
shares1279 comments 0

Earth's mantle plasticity explained

Earth's mantle is a solid layer that undergoes slow, continuous convective motion. But how do these rocks deform, thus making such motion possible, given that minerals such as olivine (the main constituent of the upper mantle) ...

dateMar 07, 2014 in Earth Sciences
shares0 comments 0

Is there an ocean beneath our feet?

(Phys.org) —Scientists at the University of Liverpool have shown that deep sea fault zones could transport much larger amounts of water from the Earth's oceans to the upper mantle than previously thought.

dateJan 27, 2014 in Earth Sciences
shares0 comments 4