Frontier beneath our feet: Seismic study aims to map Earth’s interior in 3-D

tromp_20152214112010862-2015-03SightingsFA_575 copyPrinceton geosciences professor Jeroen Tromp and his team have embarked on an ambitious project to use earthquakes to map the Earth’s entire mantle, the semisolid rock that stretches to a depth of 1,800 miles, about halfway down to the planet’s center and about 300 times deeper than humans have drilled.

Read more about the seismic study