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 massive meteorite strike 3.5 billion years ago left behind the world’s oldest known impact crater, challenging previous ...

Add Yahoo as a preferred source to see more of our stories on Google. The view from the Nuvvuagittuq greenstone belt, Nunavik, Quebec, Canada. - Jonathan O’Neil A rocky outcrop in a remote corner of ...

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, ...

Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than previously thought — and may be a big reason that our planet harbors life. When you ...

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. Analyzing rocks in thin ...