Writing in PNAS, scientists from Cologne university present important new constraints showing that plate tectonics started relatively slow, although the early Earth's interior was much hotter than today.
Earth Sciences
Dec 22, 2020
1
33
An oceanic plateau has been observed for the first time in the Earth's lower mantle, 800 kilometers deep underneath Eastern Siberia, pushing Hawaii's birthplace back to 100 million years, says a Michigan State University ...
Earth Sciences
Nov 20, 2020
1
120
The oceanic lithosphere descends into Earth's mantle as subducting slabs. Boundaries between the subducting slab and the surrounding mantle are defined as slab interfaces, whose seismic imaging is the key to understanding ...
Earth Sciences
Nov 9, 2020
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27
The existence of a tectonic plate called Resurrection has long been a topic of debate among geologists, with some arguing it was never real. Others say it subducted—moved sideways and downward—into the earth's mantle ...
Earth Sciences
Oct 20, 2020
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1668
The composition of Earth's mantle was more shaped by interactions with the oceanic crust than previously thought, according to work from Carnegie's Jonathan Tucker and Peter van Keken along with colleagues from Oxford that ...
Earth Sciences
Sep 1, 2020
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94
Geologists from Florida State University's Department of Earth, Ocean and Atmospheric Science have discovered how carbon-rich molten rock in the Earth's upper mantle might affect the movement of seismic waves.
Earth Sciences
Aug 4, 2020
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155
A new study by University of Alberta physicists provides an explanation for why changes to Earth's magnetic field over time are weaker over the Pacific region—a mystery scientists have been trying to solve for nearly a ...
Earth Sciences
Jun 30, 2020
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495
New Curtin University-led research has uncovered how rocks sourced from the Earth's mantle are linked to the formation and breakup of supercontinents and super oceans over the past 700 million years, suggesting that the Earth ...
Earth Sciences
Jun 30, 2020
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48
Scientists estimate that the Earth's mantle holds as much water as all the oceans on the planet, but understanding how this water behaves is difficult. Water in the mantle exists under high pressure and at elevated temperatures, ...
Earth Sciences
Jun 24, 2020
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83
New Curtin University research on the remixing of Earth's stratified deep interior suggests that global plate tectonic processes, which played a pivotal role in the existence of life on Earth, started to operate at least ...
Earth Sciences
Jun 12, 2020
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183
