They used a thick, gooey polymer to represent the middle mantle, and a mix of clay and the polymer for the more rigid upper mantle, topping it off with a silica-and-ceramic "crust." When left to ...

Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds. Known as large low-seismic-velocity provinces (LLSVPs), these blobs are both hotter and ...

The Earth’s mantle, a massive layer of rock beneath the ... is divided into large, rigid plates that float and move on the semi-fluid layer beneath, called the asthenosphere.