New mystery layer lies under Earth's tectonic plates

Wednesday, March 20, 2013 - 17:30 in Earth & Climate

By Becky OskinLiveScienceA mysterious layer lies beneath Earth's massive tectonic plates.Sandwiched between two rock layers — the rigid lithosphere and the more pliable asthenosphere— this thin boundary is like the jelly in a peanut butter sandwich. Scientists think it could be very wet rock, or even partially melted rock, but no one knows for sure."There have been a lot on conflicting studies," s...

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