Colorized image of a zircon crystal under scanning electron micrograph – not the crystal studied. (Emmanuel ...

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 ...

A new analysis of rocks thought to be at least 2.5 billion years old helps clarify the chemical history of Earth's mantle -- the geologic layer beneath the planet's crust. The findings hone scientists ...

A top panel of geologists has decided not to grant the 'human age' its own distinct place in Earth's geological timeline after disagreeing over when exactly our era might have begun. After 15 years of ...

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.

Rocks collected from the Moon’s far side suggest the early Solar System endured a long decline in asteroid impacts rather ...

An illustration of Earth with a ring. Kevin M. Gill via Wikimedia Commons under CC BY 2.0 During a tumultuous period for our planet around 466 million years ago, Earth was pelted with meteorites and ...

Climate, tectonics and time combine to create powerful forces that craft the face of our planet. Add the gradual sculpting of the Earth’s surface by rivers and what to us seems solid as rock is ...

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The researchers studied fossilized trunks from the Kyffhäuser Mountains in northern Thuringia, Germany. Known since at least ...