News tagged with upper mantle

As the World Churns

(PhysOrg.com) -- "Terra firma." It's Latin for "solid Earth." Most of the time, at least from our perspective here on the ground, Earth seems to be just that: solid. Yet the Earth beneath our feet is actually ...

dateDec 28, 2009 in Earth Sciences
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Is there an ocean beneath our feet?

(Phys.org) —Scientists at the University of Liverpool have shown that deep sea fault zones could transport much larger amounts of water from the Earth's oceans to the upper mantle than previously thought.

dateJan 27, 2014 in Earth Sciences
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Volcanoes deliver two flavors of water

Seawater circulation pumps hydrogen and boron into the oceanic plates that make up the seafloor, and some of this seawater remains trapped as the plates descend into the mantle at areas called subduction zones. ...

dateFeb 26, 2012 in Earth Sciences
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Probing iron chemistry in the deep mantle

Carbonates are a group of minerals that contain the carbonate ion (CO32-) and a metal, such as iron or magnesium. Carbonates are important constituents of marine sediments and are heavily involved in the ...

dateMay 15, 2015 in Earth Sciences
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When continents formed

A new way to calculate the age of the Earth's crust has been developed by researchers from the University of Bristol and the University of St Andrews.

dateJan 13, 2011 in Earth Sciences
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