Geology

Structures that scatter seismic waves deep in Earth's mantle seem to be everywhere researchers look.

Geological evidence of the transition when Earth was plunged into a planetary-wide deep-freeze discovered in ancient Scottish rocks.

The Yarlung Tsangpo Grand Canyon is Earth's largest terrestrial canyon, stretching 314 miles long and almost 20,000 feet from top to bottom at its deepest point in the Tibet Autonomous Region.

Scientists just pulled the longest hunk of Earth's mantle from beneath the ocean.

Dramatic cliffs and high plateaus are caused by the same wave triggered in Earth's middle layer when continents pull apart, a new study finds.

Researchers have discovered the world's oldest known arc-slicing fault in Australia, intensifying the debate over the origins of plate tectonics.

A new study of sapphires found in volcanic fields in Germany reveals that these beautiful blue stones form where magma and rocks from Earth's crust mix.

The Salar de Uyuni desert is famous for its gleaming surface waters and hexagonal salt crust patterns, but below this otherworldly landscape lie about 11 million tons of highly sought-after lithium.

Huge iron ore deposits in Western Australia's Hamersley Province formed when major tectonic events led to the breakup of supercontinent Columbia and to the amalgamation of Australia.

Geologists have revealed new details about a recent geyser eruption at Yellowstone National Park, including the shallow depth of the explosion and staggering height of its plume.