There's a billion-year gap in Earth's geological history. A new study seeks to explain the mystery.

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.

Much of our understanding of Earth's past is derived from stratigraphic records exposed in rock outcrops or recovered from drilled cores. These records span immense time intervals, from thousands to ...

Geological history of earth dates back to over four billion years but one of the greatest mysteries has perplexed scientists ...

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.

The discovery could usher in a wave of investigations into the evolution of Earth’s mantle, a layer of material about 1,800 miles deep that extends from just beneath the planet’s thin crust to its ...

A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Field width ~ 14mm. Analyzing rocks in thin ...

A new study traces a 120-million-year-old 'super-eruption' to its source, offering new insights into Earth's complex geological history. Geologists led by the University of Maryland and the University ...

Science in the silver age: Aetna, a classical theory of volcanic activity -- Some Neo-Platonic and Stoic influences on mineralogy in the sixteenth and seventeenth centuries -- Mechanical mineralogy -- ...

A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Field width ~ 14mm. Credit: E. Cottrell, ...