Erik H. Hauri
Diamonds, on the other hand, are highly valued gemstones composed of carbon atoms arranged in a crystal lattice structure. They form under extreme pressure and high temperatures deep within the Earth's mantle and are known for their exceptional hardness and brilliance. 5 Coal is predominantly used...
The composition of the upper mantle bounded by the Canaries, Eastern Anatolia, Libya and Poland is indirectly investigated by means of the chemical composition of igneous rocks with 'anorogenic' geochemical characteristics emplaced during the Cenozoic. The relatively homogeneous composition of these ...