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Tag: Continents

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....

The strains of a continental breakup

Every now and then in Earth's history, a pair of continents draws close enough to form one. There comes a time, however, when they...

Plate tectonics without jerking

The earthquake distribution on ultraslow mid-ocean ridges differs fundamentally from other spreading zones. Water circulating at a depth of up to 15 kilometres leads...

Why do intracontinental basins subside longer?

Intracontinental basins like the North German Basin, the West Siberian Basin, the Barents Sea or the Congo Basin are large depressions of the Earth’s...

Oxygen atmosphere recipe = tectonics + continents + life

Earth scientists from Rice University, Yale University and the University of Tokyo are offering a new answer to the long-standing question of how our...

Continental drift created biologically diverse coral reefs

Nowhere today is the biodiversity of corals and reef-inhabiting fish higher than in the tropical waters around Indonesia and its neighbouring countries in Southeast...

Supercontinent rift formed bizarre Bunbury rocks

Bunbury beachgoers may be unsettled to learn that the refreshing, blue stretch of water off the port city was preceded by a huge lava...

Researchers define links within two supercontinents

A University of Wyoming researcher contributed to a paper that has apparently solved an age-old riddle of how constituent continents were arranged in two...

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