Uranium isotopes reveal age and origin of volcanic rocks

From the beginning of time, uranium has been part of the Earth and, thanks to its long-lived radioactivity, it has proven ideal to date geological processes and deduce Earth's evolution. Natural uranium consists of two long-lived ...

Study hints that ancient Earth made its own water—geologically

A new study is helping to answer a longstanding question that has recently moved to the forefront of earth science: Did our planet make its own water through geologic processes, or did water come to us via icy comets from ...

Deep-earth carbon offers clues on origin of life on Earth

New findings by a Johns Hopkins University-led team reveal long unknown details about carbon deep beneath the Earth's surface and suggest ways this subterranean carbon might have influenced the history of life on the planet.

Mantle plumes crack continents

Using a simulation with an unprecedentedly high resolution, Earth scientists from University of Paris VI and ETH Zurich have shown that magma columns in the Earth's interior can cause continental breakup—but only if the ...

Our planet's most abundant mineral now has a name

Deep below the earth's surface lies a thick, rocky layer called the mantle, which makes up the majority of our planet's volume. For decades, scientists have known that most of the lower mantle is a silicate mineral with a ...

Scientists may have identified echoes of ancient Earth

A group of scientists believe that a previously unexplained isotopic ratio from deep within the Earth may be a signal from material from the time before the Earth collided with another planet-sized body, leading to the creation ...

Ancient rocks yield clues about Earth's earliest crust

(Phys.org) —It looks like just another rock, but what Jesse Reimink holds in his hands is a four-billion-year-old chunk of an ancient protocontinent that holds clues about how the Earth's first continents formed.

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