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 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 ...

What are some events that all of us have had in our lives? Ask the class "What are some events that all of us have had in our lives?" Make a list of 5 or 6 things on the board. Let’s organize these!

Ever wanted to know more about the ground beneath your feet? Well, thanks to a new geologic map of the lower 48 states of the USA, now you can – and in more detail than ever before. Geologic maps are ...

Continental clues: Modern continental rocks carry chemical signatures from the very start of our planet’s history, challenging current theories about plate tectonics. Researchers have made a new ...

The official timekeepers of Earth history are in an uproar after a key scientific panel decided this week that the planet’s geologic timeline should not include a radical new chapter defined by human ...