TEMPE, Ariz. – Deep within Earth, halfway to its center in an area where Earth's core meets its mantle, lies a massive folded slab of rock that once was the ocean floor, reports a team of ...

Deep within Earth, halfway to its center in an area where Earth's core meets its mantle, lies a massive folded slab of rock that once was the ocean floor, reports a team of researchers in the ...

Arizona State University. "Slab Of Sunken Ocean Floor Found Deep Within Earth." ScienceDaily. ScienceDaily, 3 June 2006. <www.sciencedaily.com / releases / 2006 / 06 / 060603092903.htm>.

Halfway to the center of the Earth, at the boundary between the core and the mantle, lies a massive folded slab of rock that once formed the ocean floor and sank beneath North America some 50 million ...