Meet 'The Blobs': Two Continent-Size Mountains in Earth's Deep Mantle That Nobody Understands | WHAT REALLY HAPPENED


Meet 'The Blobs': Two Continent-Size Mountains in Earth's Deep Mantle That Nobody Understands

About halfway between your feet and the center of Earth, two continent-size mountains of hot, compressed rock pierce the gut of the planet — and scientists know almost nothing about them.

Technically, these mysterious hunks of rock are called "large low-shear-velocity provinces" (LLSVPs), because seismic waves shuddering through Earth always slow down when passing through these structures.

A mesmerizing image, featured in an article on Eos (the official news site of the American Geophysical Union, or AGU), gives us one of the most detailed views yet of these rocky anomalies — which most scientists simply call "the blobs." [Earth's 8 Biggest Mysteries]

Geophysicists have known about the blobs since the 1970s but aren't much closer to understanding them today.

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