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Tag: Continents

Diamonds reveal how continents are stabilized, key to Earth’s habitability

The longevity of Earth's continents in the face of destructive tectonic activity is an essential geologic backdrop for the emergence of life on our...

When India Slammed Into Asia

When the landmass that is now the Indian subcontinent slammed into Asia about 50 million years ago, the collision changed the configuration of the...

New light into the recent evolution of the African rift valley

Continental rift valleys are huge fractures on the surface of our planet that progressively break continental plates with the eventual development of new oceans....

Scientists propose solution to ‘Gaia puzzle’

Scientists may have solved a long-standing puzzle over why conditions on Earth have remained stable enough for life to evolve over billions of years....

Earth could have supported continental crust, life earlier than thought

The early Earth might have been habitable much earlier than thought, according to new research from a group led by University of Chicago scientists. Counting...

Utah fossil reveals global exodus of mammals’ near relatives to major...

A nearly 130-million-year-old fossilized skull found in Utah is an Earth-shattering discovery in one respect. The small fossil is evidence that the super-continental split likely...

Formation of supercontinents and strength of ocean tides

The cyclic strengthening and weakening of ocean tides over tens of millions of years is likely linked to another, longer cycle: the formation of...

Continental interiors may not be as tectonically stable as geologists think

A University of Illinois-led team has identified unexpected geophysical signals underneath tectonically stable interiors of South America and Africa. The data suggest that geologic...

When continents break it gets warm on Earth

The concentration of carbon dioxide (CO2) in the atmosphere determines whether the Earth is in greenhouse or ice age state. Before humans began to...

Ancient Earth’s hot interior created ‘graveyard’ of continental slabs

Plate tectonics has shaped the Earth's surface for billions of years: Continents and oceanic crust have pushed and pulled on each other, continually rearranging...

How continents were recycled

Researchers from Germany and Switzerland have used computer simulations to analyse how plate tectonics have evolved on Earth over the last three billion years....

Scientists set sail to unlock secrets of ‘lost continent’ Zealandia

Scientists are attempting to unlock the secrets of the "lost continent" of Zealandia, setting sail Friday to investigate the huge underwater landmass east of...

Link identified between continental breakup, volcanic carbon emissions and evolution

Researchers have found that the formation and breakup of supercontinents over hundreds of millions of years controls volcanic carbon emissions. The results, reported in...

Geology and biology agree on Pangaea supercontinent breakup dates

Scientists at The Australian National University (ANU) have found that independent estimates from geology and biology agree on the timing of the breakup of...

As continents continue moving, study suggests effects on biodiversity

Continental drift and plate tectonics—the notion that large chunks of Earth's crust slowly but inexorably shift positions—was proposed in 1912 but not accepted until...

Continental crust thanks to the right mixture

For the first time, ETH scientists have successfully recreated the formation of continental crust in the Archean using a computer simulation. The model helps...

A new interpretation of petrogenesis of Earth’s early continental crust

The Earth's continental crust was mainly formed in the Archean period, ~2.5 to 4.0 billion years ago, and is chiefly composed of tonalite, trondhjemite...

“Lost continent” found under Mauritius

Scientists have confirmed the existence of a "lost continent" under the Indian Ocean island of Mauritius that was left-over by the break-up of the...

Where’s the center of North America? Geographer’s new method finds a...

Where is the geographic center of a state, country or a continent? It's a question fraught with uncertainty. Do you include water in your calculation?...

Geologists publish new details about evolution of East African Rift Valley

Researchers in the College of Arts and Sciences have published new details about the evolution of the East African Rift (EAR) Valley, one of...

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