These ancient buried "super-continents"—known to scientists as large low-seismic-velocity provinces (LLSVPs)—were found lurking below Africa and the Pacific Ocean, entombed some 1,200 miles below the ...

A team of geologists and mineral physicists at Harvard University, the University of California, Argonne National Laboratory ...

Nobody knew what they are, and whether they are only a temporary phenomenon, or if they have been sitting there for millions ...

This is a 3D view of the top 1,000 kilometers of the earth's mantle beneath the central Pacific showing the relationship between seismically-slow "plumes" and channels imaged in the study.

Here’s how it works. 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 ...

Over 25 years ago, researchers discovered that some of these deep Earth reverberations pointed to the existence of two underground “super-continents” hundreds of miles beneath Africa and the Pacific ...

The 3-D illustration shows the so-called mantle plume feeding the super volcano which forced the plates apart. The arrows indicate the different movements. Disclaimer: AAAS and EurekAlert!

"The Earth's mantle is the engine that drives all these phenomena. Take, for example, mantle plumes, which are large bubbles of hot material that rise from the Earth's deep interior as in a lava ...

Using a nearly 200-year record of lava chemistry from Kīlauea and Maunaloa, earth scientists from the University of Hawaiʻi at Mānoa and colleagues revealed that Hawaiʻi’s two most active volcanoes ...