News tagged with mantle

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Solution to ancient rock puzzle posited

A superplume, or massive episode of volcanic eruptions that related to extensive melting of the Earth's mantle, could explain the puzzling reappearance of major iron formations long after the rise in atmospheric ...

Apr 27, 2012 5 / 5 (2) 0

Looking inside the Earth

(Phys.org) -- Defects found in rocks below the Earth’s surface have a major impact on the transmission of seismic waves, such as those caused by earthquakes, researchers at The Australian National University ...

Apr 23, 2012 4.5 / 5 (4) 0 | with audio podcast

Mapping the Moho with GOCE

The first global high-resolution map of the boundary between Earth's crust and mantle – the Moho – has been produced based on data from ESA's GOCE gravity satellite. Understanding the Moho will offer new clues into ...

Mar 09, 2012 5 / 5 (2) 2

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. ...

Feb 26, 2012 4.2 / 5 (5) 5 | with audio podcast

Plate tectonics modelled realistically

Swiss scientists have for the first time succeeded in realistically simulating how an oceanic plate sinks of its own accord under an adjacent plate. At the same time they showed why only one of the plates ...

Feb 23, 2012 3.9 / 5 (7) 0