Earth's Crust

Never-Before-Seen Mineral Found Inside a Diamond

The diamond acted as a container, keeping a piece of calcium silicate perovskite stable as it moved towards the Earth’s surface

Clues for Earthquake Prediction May Be Hiding in Earth's Molten Core

Researchers propose that irregularities in the core's rotation could spawn clusters of major quakes

Rescue workers search for survivors among the rubble of a collapsed building in Mexico City. Structures throughout the capital were devastated during yesterday's earthquake.

How Mexico City’s Unique Geology Makes Deadly Earthquakes Even Worse

The entire country—but especially the capital—has all the ingredients for seismic catastrophe

Researchers studying stalagmite formations in the Wabash Valley fault system have found that stalagmites can yield clues to the timing of ancient earthquakes.

Cave Formations Carry Clues About Ancient Earthquakes

Researchers have found that stalagmites can help determine if and when a region was struck by an earthquake.

The magnitude 5.8 earthquake that struck Pawnee, Oklahoma, on Sept. 3 is officially the state's largest on record. Geologists believe that activities related to oil and gas extraction in the state have triggered a quake swarm in the seismically active region.

Oklahoma Just Had Its Biggest Quake Ever, and There May Be More to Come

Oklahoma's recent string of earthquakes are something new for the state

A beach in Juneau, Alaska. Sea levels in Alaska are not rising, but dropping precipitously due to a phenomenon known as glacial isostatic adjustment.

Melting Glaciers Are Wreaking Havoc on Earth's Crust

Sea levels are dropping, earthquakes and volcanoes are waking up, and even the earth's axis is moving—all because of melting ice

The Cascadia Subduction Zone could unleash "the big one" soon, causing havoc in Seattle.

Slow Earthquakes Are a Thing

Slow earthquakes regularly move more earth than deadly fast quakes, but no one feels a thing

Rescuers search for survivors following the earthquake that struck central Italy early this morning.

The Geology Behind Italy’s Catastrophic Quake

A magnitude 6.2 earthquake shook the Apennine Mountains—and given the region’s geology, that’s no surprise

This 340-Million-Year-Old Ocean Crust Could Date Back to Pangaea

Researchers believe they've found the world's oldest ocean crust

"HEY! DID YOU KNOW THAT MACQUARIE ISLAND IS HOME TO SOME OF THE WORLD'S OLDEST ROCKS?" "I DID NOT! WHY ARE WE YELLING?" "I DON'T KNOW, WE'RE SEALS"

Go Deep: 5 Places on Earth to See Seriously Old Rocks

See geology "in action"—or at least as action-packed as rocks can be—at these five spots

An artist's rendering of Chicxulub, the asteroid believed to have wiped out large dinosaurs and reshaped parts of the world.

What Happened in the Seconds, Hours, Weeks After the Dino-Killing Asteroid Hit Earth?

The Cretaceous forecast: Tsunamis, a deadly heat pulse, and massive cooling.

The San Andreas Fault, cause of countless big quakes.

Seismic Slowdowns Could Warn of Impending Earthquakes

An "earthquake machine" in the lab is helping scientists understand what goes on just before a quake

Paleontologist Paul Olsen of Lamont-Doherty Earth Observatory is co-leading a project in Arizona's Petrified Forest National Park to drill deep into rocks dating back more than 200 million years.

Defying Critics, Paleontologist Paul Olsen Looks for Hidden Answers Behind Mass Extinctions

From a childhood spent discovering fossils to tangling over questions of ancient life and death, this scientist constantly pushes the boundaries.

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

A map of gravity variations on the Earth's seafloor, which mostly correspond to underwater ridges and the edges of Earth's tectonic plates.

Study Says Earth's Plate Tectonics May Be Just a Phase

New models suggest that earth's plates could grind to a halt in about five billion years.

The scalding solution that pipes from the vents does not boil because of the mass of water pushing down from above.

Scientists Explore Breathtaking Hydrothermal Vents in Virtual Reality

With a high-tech remotely operated vehicle, a team is able to map a dark, hot and toxic vent field on the ocean floor

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

A woman sits amid the ruins of the Great Stone Church, which collapsed in an 1812 earthquake, at Mission San Juan Capistrano.

San Andreas May Have Had Help Triggering a Historic Earthquake

New evidence about a devastating quake in 1812 hints that the San Jacinto fault may be a bigger seismic risk than anyone thought

Ellis Emmett, diving between two continents in Silfra.

Dive Between Two Continents in This Frigid Fissure in Iceland

Filled with pure glacier water, Silfra is the only place on Earth where divers can touch two continental plates at once

Nematodes (blue) wiggle inside a stalactite from a South African gold mine in this image taken with a microscope.

Inner Earth Is Teeming With Exotic Forms of Life

More than a mile below the surface, our planet supports diverse creatures that could give us clues about life across the solar system

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