News tagged with mantle

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Textbook theory behind volcanoes may be wrong

In the typical textbook picture, volcanoes, such as those that are forming the Hawaiian islands, erupt when magma gushes out as narrow jets from deep inside Earth. But that picture is wrong, according to ...

Sep 08, 2014
4.9 / 5 (58) 14

Earth's center is out of sync

(Phys.org) —We all know that the Earth rotates beneath our feet, but new research from ANU has revealed that the center of the Earth is out of sync with the rest of the planet, frequently speeding up and ...

May 13, 2013
4.8 / 5 (59) 37 | with audio podcast

A new kind of metal in the deep Earth

(PhysOrg.com) -- The crushing pressures and intense temperatures in Earth's deep interior squeeze atoms and electrons so closely together that they interact very differently. With depth materials change. New ...

Dec 19, 2011
4.7 / 5 (25) 16 | with audio podcast

New study reveals insights on plate tectonics

(Phys.org) —The Earth's outer layer is made up of a series of moving, interacting plates whose motion at the surface generates earthquakes, creates volcanoes and builds mountains. Geoscientists have long ...

Mar 04, 2014
4.9 / 5 (24) 167

What keeps the Earth cooking?

What spreads the sea floors and moves the continents? What melts iron in the outer core and enables the Earth's magnetic field? Heat. Geologists have used temperature measurements from more than 20,000 boreholes ...

Jul 17, 2011
4.6 / 5 (24) 50 | with audio podcast

Arctic rocks offer new glimpse of primitive Earth

Scientists have discovered a new window into the Earth's violent past. Geochemical evidence from volcanic rocks collected on Baffin Island in the Canadian Arctic suggests that beneath it lies a region of the Earth's mantle ...

Aug 11, 2010
3.4 / 5 (26) 6 | with audio podcast