posted on Sep, 21 2007 @ 07:14 PM
A first-time experimental recreation of the crushing, searing conditions within the Earth's lower mantle has led geophysicists to a surprising
proposal that there is a new zone of rock within the planet.
The research suggests that a section of the Earth's brittle mantle about 620 to 1,365 miles (1,000 to 2,200 kilometers) deep actually is a
"transitional zone" where the rock turns into a strange, incredibly dense state.
here is the link