What is the structure of the Earth? For starters, it consists of several layers: the crust, the upper and lower mantle, and the core. The mantle makes up most of our planet's volume—84%. The lower mantle represents 55% ...
Earth Sciences
Oct 20, 2022
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474
The transition zone between the Earth's upper and lower mantle contains considerable quantities of water, according to an international study involving the Institute for Geosciences at Goethe University in Frankfurt. The ...
Earth Sciences
Sep 27, 2022
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The rapid development of fauna 540 million years ago has permanently changed the Earth—deep into its lower mantle. A team led by ETH researcher Andrea Giuliani found traces of this development in rocks from this zone.
Earth Sciences
Mar 7, 2022
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The high temperatures and pressures of the Earth's mantle forge carbon-rich minerals known as carbonates into diamond. But less is known about the fate of carbonates that travel even deeper underground—depths from which ...
Earth Sciences
Mar 24, 2021
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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 ...
Earth Sciences
Oct 21, 2020
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If we took a journey from Earth's surface to the center, the midway point is roughly at 1900 km depth in the lower mantle. The lower mantle ranges from 660 to 2900 km depth and occupies 55% of our planet by volume. The chemical ...
Earth Sciences
May 22, 2020
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Earth's molten core may be leaking iron, according to researchers who analyzed how iron behaves inside our planet.
Earth Sciences
Apr 13, 2020
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Simulating the conditions 2,700 kilometers deep underground, scientists have studied an important transformation of the most abundant mineral on Earth, bridgmanite. The results from the Extreme Conditions Beamline at DESY's ...
Earth Sciences
Dec 17, 2019
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124
Every school child learns about the water cycle—evaporation, condensation, precipitation, and collection. But what if there were a deep Earth component of this process happening on geologic timescales that makes our planet ...
Earth Sciences
Dec 17, 2019
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151
Professor Eiji Ohtani from Tohoku University, Japan, summarized the content, distribution and effect of water in the Earth's mantle, published in National Science Review.
Earth Sciences
Jul 10, 2019
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