News tagged with earths mantle

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

Mantle plumes crack continents

Using a simulation with an unprecedentedly high resolution, Earth scientists from University of Paris VI and ETH Zurich have shown that magma columns in the Earth's interior can cause continental breakup—but ...

Sep 04, 2014
4.5 / 5 (12) 1

A wet Moon

The Moon's status as a "dry" rock in space has long been questioned. Competing theories abound as to the source of the H20 in the lunar soil, including delivery of water to the Moon by comets.

Mar 26, 2014
5 / 5 (7) 1

Earth's mantle plasticity explained

Earth's mantle is a solid layer that undergoes slow, continuous convective motion. But how do these rocks deform, thus making such motion possible, given that minerals such as olivine (the main constituent ...

Mar 07, 2014
5 / 5 (6) 0

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

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.

Jan 27, 2014
4.6 / 5 (15) 4 | with audio podcast