Nitrogen makes up approximately 78% of the air we breathe. But scientists have never fully understood how it came to be present in the atmospheres around Earth and other planets.
Earth Sciences
Apr 21, 2020
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Ancient volcanoes dating back billions of years could provide new insights into how the Earth's surface is recycled, according to scientists at the University of St Andrews.
Earth Sciences
Sep 17, 2019
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Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials from the early Earth's crust. But decisive evidence for this phenomenon has proven elusive. New research from a team including ...
Earth Sciences
Apr 24, 2013
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New research on oxygen and iron chemistry under the extreme conditions found deep inside the Earth could explain a longstanding seismic mystery called ultralow velocity zones. Published in Nature, the findings could have ...
Earth Sciences
Nov 22, 2017
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Convection in Earth's mantle is the "engine" driving plate tectonics. Hot material rises to the Earth's surface from the boundary between the planet's core and mantle, at a depth of about 3000 kilometers. Cold material then ...
Earth Sciences
Sep 9, 2019
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Earth's mantle is the thick layer of silicate rock between Earth's crust and its molten core, making up about 84% of our planet's volume. The mantle is predominantly solid but, on geologic time scales, it behaves as a viscous ...
Earth Sciences
Jul 11, 2022
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The journey for volcanic rocks found on many volcanic islands began deep within the Earth.
Earth Sciences
Nov 24, 2015
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Compass readings that do not show the direction of true north and interference with the operations of satellites are a few of the problems caused by peculiarities of the Earth's magnetic field.
Earth Sciences
Mar 16, 2023
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471
(PhysOrg.com) -- The Banda arc - a gigantic 1,000km long, 180-degree curve in eastern Indonesia - has puzzled geologists for many years, with much debate and controversy surrounding its complex origin and evolution. A solution ...
Earth Sciences
Jul 26, 2010
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(PhysOrg.com) -- Nyiragongo, an active African volcano, possesses lava unlike any other in the world, which may point toward its source being a new mantle plume says a University of Rochester geochemist. The lava composition ...
Earth Sciences
Mar 13, 2009
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