Earth's Mantle

San Andreas fault near Parkfield, California

Tides Trigger Tiny Earthquakes Along the San Andreas Fault

The spring tides trigger small tremors deep in the fault, revealing the fault's structure

Rough diamonds from the Juina region of Brazil.

Diamonds Illuminate the Origins of Earth's Deepest Oceans

Crystals could be the key to where our water came from, and what that means for finding life on other planets

What Caused the 2011 D.C. Earthquake?

A thinning mantle led to the 5.8 magnitude shake in the Southeast, and more may be in store

The drill bit that the Atlantis Bank expedition broke near the start of operations. Three of the four "cones" used to dig the hole have snapped off.

A Decades-Long Quest to Drill Into Earth's Mantle May Soon Hit Pay Dirt

Geologists have had to contend with bad luck, budget cuts and the race to the moon in their efforts to drill deep into our planet

An artist's rendition of an asteroid impact.

Largest Asteroid Crater Ever Discovered Underground in Australia

Deep in Earth’s mantle, scientists find evidence of a colossal impact that could reveal new information about Earth’s history

Earth's layers.

What We Can Learn by Digging Up the Secrets of Earth's Deep Carbon

Diamond computers and subsurface life are just some of the topics being investigated by scientists in the Deep Carbon Observatory network

There May Be a Second Massive Ocean Deep Beneath the Surface

Chemically bonded to minerals in the transition zone, Earth's mantle may be rather wet

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