In 1869, John Wesley Powell was studying layers of rock in the Grand Canyon when he noticed an unconformity in the layers. Around a billion years were missing, and the problem turned out to be global.

Sedimentary rocks have unveiled a fascinating chapter in Earth’s geological history, revealing ancient ocean floor cooling. This discovery sheds light on previously unknown changes in ocean ...

Researchers have detected a previously unknown layer of partially molten rock beneath Earth's crust. The discovery could help scientists learn more about the movements of Earth's tectonic plates, ...

A group of scientists has discovered a hidden layer of molten rock under the Earth's surface. The new layer is located around 100 miles beneath the surface and appears to extend below much of the ...

A layer of rock just 520 million years old sat directly on top of ancient rock dating back 1.4 to 1.8 billion years.

The Earth with the upper mantle revealed. Researchers at The University of Texas at Austin have discovered a previously unknown layer of partly molten rock in a key region just below the tectonic ...

Researchers have detected a previously unknown layer of partially molten rock beneath Earth’s crust. The discovery could help scientists learn more about the movements of Earth’s tectonic plates, ...