Tag Archive for Mantle

Ancient Earth crust stored in deep mantle

April 25, 2013 / dgcrenshaw / One comment

Featured Image: Cut-a-Way diagram of the Earth’s Interior. SOURCE Wikipedia (Public Domain) 

From Terra Daily by Staff Writers
Washington DC (SPX) Apr 25, 2013

Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials from the early Earth’s crust. But decisive evidence for this phenomenon has proven elusive.

New research from a team including Carnegie’s Erik Hauri demonstrates that oceanic volcanic rocks contain samples of recycled crust dating back to the Archean era 2.5 billion years ago. Their work is published in Nature. . . . Read Complete Report

Category: Hollow Earth/ Subterranean Worlds / Tags: , , , , ,

Scientists Discover Layer of Liquified Molten Rock in Earth’s Mantle

March 28, 2013 / dgcrenshaw / No comments

Photo: Orange-colored area enclosed by dashed line denotes recently discovered magma layer. Credit: Scripps Institution of Oceanography. SOURCE Terra Daily.

From Terra Daily

by Staff Writers
Arlington VA (SPX) Mar 27, 2013

Scientists have discovered a layer of liquified molten rock in Earth’s mantle that may be responsible for the sliding motions of the planet’s massive tectonic plates. The finding may carry far-reaching implications, from understanding basic geologic functions of the planet to new insights into volcanism and earthquakes.

The research was funded by the National Science Foundation (NSF), and is reported in this week’s issue of the journal Nature by Samer Naif, Kerry Key, and Steven Constable of the Scripps Institution of Oceanography (SIO), and Rob Evans of the Woods Hole Oceanographic Institution. . . . Read Complete Report

Category: Hollow Earth/ Subterranean Worlds / Tags: , , , , , , ,
 
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