Far below the Earth’s surface, about 1,800 miles deep, lies a roiling magmatic region sandwiched between the solid silicate-based mantle and molten iron-rich core: The core-mantle boundary. It’s a remnant of olden times, the primordial days about 4.5 billion years ago when the entire planet was molten, an endless sea of magma. Although the region’s extreme pressures and temperatures make it difficult to study, it contains clues about the mysterious origin story of the world as we know it.
Click here for original story, Probing materials at deep-Earth conditions to decipher Earth’s evolutionary tale
Source: Phys.org