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Tag: Continents

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...

Plate tectonics shift?

Plate tectonics, the idea that the surface of the Earth is made up of plates that move apart and come back together, has been...

Breakup of supercontinent Pangea cooled mantle and thinned crust

The oceanic crust produced by the Earth today is significantly thinner than crust made 170 million years ago during the time of the supercontinent...

Why are there volcanoes on an island that isn’t near any...

Madagascar, the big island off the east coast of Africa with the lemurs and baobabs, is thought to be sitting in the middle of...

Modelling Gondwana break-up

Gondwana break-up changed the global continental configuration, leading to the opening of major oceanic gateways, shifts in the climate system and significant impacts on...

Australian continent shifts with the seasons, study finds

Australia shifts and tilts back and forth by several millimeters each year because of changes to Earth's center of mass, according to a new...

Earthquake series cause uplift variations at continental margins

A new mechanism may explain how great earthquakes with magnitudes larger than M7 are linked to coastal uplift in many regions worldwide. This has...

Case of Earth’s missing continental crust solved: It sank

How do you make half the mass of two continents disappear? To answer that question, you first need to discover that it's missing. That's what...

Revealing Earth’s early secrets

Addressing fundamental unknowns about the earliest history of Earth's crust, scientists have precisely dated the world's oldest rock unit at 4.02 billion years old....

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