Current understanding is that the chemical composition of the Earth’s mantle is relatively homogeneous. But experiments conducted by ETH researchers now show that this view is too simplistic.
Current understanding is that the chemical composition of the Earth’s mantle is relatively homogeneous. But experiments conducted by ETH researchers now show that this view is too simplistic. Their results solve a key problem facing the geosciences – and raise some new questions.
There are places that will always be beyond our reach. The Earth’s interior is one of them. But we do have ways of gaining an understanding of this uncharted world. Seismic waves, for instance, allow us to put important constraints about the structure of our planet and the physical properties of the materials hidden deep within it. Then there are the volcanic rocks that emerge in some places on the Earth’s surface from deep within and provide important clues about the chemical composition of the mantle. And finally there are lab experiments that can simulate the conditions of the Earth’s interior on a small scale.
A new publication by Motohiko Murakami, Professor of Experimental Mineral Physics, and his team was featured recently in the journal PNAS and shows just how illuminating such experiments can be. The researchers’ findings suggest that many geoscientists’ understanding of the Earth’s interior may be too simplistic.
Read more at: ETH Zurich
