News tagged with mantle

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Deep Earth heat surprise

The key to understanding Earth's evolution is to look at how heat is conducted in the deep lower mantle—a region some 400 to 1,800 miles (660 to 2,900 kilometers) below the surface. Researchers at the Carnegie ...

Aug 09, 2013
4.3 / 5 (11) 0 | with audio podcast

'Highway from hell' fueled Costa Rican volcano

If some volcanoes operate on geologic timescales, Costa Rica's Irazú had something of a short fuse. In a new study in the journal Nature, scientists suggest that the 1960s eruption of Costa Rica's larges ...

Jul 31, 2013
4.7 / 5 (9) 0 | with audio podcast

Strong earthquake at exceptional depth

This morning at 05:45 CEST, the earth trembled beneath the Okhotsk Sea in the Pacific Northwest. The quake, with a magnitude of 8.2, took place at an exceptional depth of 605 kilometers. Because of the great ...

May 24, 2013
4.3 / 5 (8) 2