Tags Plate tectonics

Tag: plate tectonics

Supervolcano fed from Earth’s mantle caused crustal plates to rotate

The plates of the Earth's crust perform complicated movements that can be attributed to quite simple mechanisms. That is the short version of the...

Earth’s oldest minerals date onset of plate tectonics to 3.6 billion...

Scientists led by Michael Ackerson, a research geologist at the Smithsonian's National Museum of Natural History, provide new evidence that modern plate tectonics, a...

Discovery of new geologic process calls for changes to plate tectonic...

Geoscientists at the University of Toronto (U of T) and Istanbul Technical University have discovered a new process in plate tectonics which shows that...

New research uncovers continental crust emerged 500 million years earlier than...

The first emergence and persistence of continental crust on Earth during the Archaean (4 billion to 2.5 billion years ago) has important implications for...

Red Sea is no longer a baby ocean

The Red Sea is a fascinating and still puzzling area of investigation for geoscientists. Controversial questions include its age and whether it represents a...

Scientists probe mysterious melting of Earth’s crust in western North America

A group of University of Wyoming professors and students has identified an unusual belt of igneous rocks that stretches for over 2,000 miles from...

A new view on plate tectonics

Forces acting inside the Earth have been constantly reshaping the continents and ocean basins over millions of years. What Alfred Wegener published as an...

Geologists discover powerful ‘river of rocks’ below Caribbean

Geologists have long thought tectonic plates move because they are pulled by the weight of their sinking portions and that an underlying, hot, softer...

Making sense of commotion under the ocean to locate tremors near...

Researchers from Japan and Indonesia have pioneered a new method for more accurately estimating the source of weak ground vibrations in areas where one...

Subduction may recycle less water than thought

When one tectonic plate dives beneath another at a subduction zone, it recycles huge amounts of water and other chemicals into Earth's mantle. The...

Going with the grains to explain a fundamental tectonic force

A new study suggests that tiny, mineral grains—squeezed and mixed over millions of years—set in motion the chain of events that plunge massive tectonic...

Geological phenomenon widening the Atlantic Ocean

An upsurge of matter from deep beneath the Earth's crust could be pushing the continents of North and South America further apart from Europe...

Slow start of plate tectonics despite a hot early Earth

Writing in PNAS, scientists from Cologne university present important new constraints showing that plate tectonics started relatively slow, although the early Earth's interior was...

Seismic activity of New Zealand’s alpine fault more complex than suspected

A rupture along the full length of the fast-slipping Alpine Fault on New Zealand's South Island poses the largest potential seismic threat to the...

Continents prone to destruction in their infancy, study finds

Monash University geologists have shed new light on the early history of the Earth through their discovery that continents were weak and prone to...

What will the climate be like when Earth’s next supercontinent forms?

Long ago, all the continents were crammed together into one large land mass called Pangea. Pangea broke apart about 200 million years ago, its...

Piecing together the Alaska coastline’s fractured volcanic activity

Among seismologists, the geology of Alaska's earthquake- and volcano-rich coast from the Aleutian Islands to the southeast is fascinating, but not well understood. Now,...

Former piece of Pacific Ocean floor imaged deep beneath China

In a study that gives new meaning to the term "rock bottom," seismic researchers have discovered the underside of a rocky slab of Earth's...

East African Rift System is slowly breaking away, with Madagascar splitting...

The African continent is slowly separating into several large and small tectonic blocks along the diverging East African Rift System, continuing to Madagascar --...

Researchers discover ‘missing’ piece of Hawaii’s formation

An oceanic plateau has been observed for the first time in the Earth's lower mantle, 800 kilometers deep underneath Eastern Siberia, pushing Hawaii's birthplace...

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