Thursday, April 15, 2021
plate tectonics

plate tectonics

Latest
New Curtin University research on the remixing of Earth's stratified deep interior suggests that global plate tectonic processes, which played a pivotal role in the existence of life on Earth, started to operate at least 3.2 billion years ago. Credit: Professor Zheng-Xiang Li
plate tectonics

Remixed mantle suggests early start of plate tectonics

Geology Page -
0
Proposed model for deep-carbon transport along a cratonic boundary in the EARS study region.
plate tectonics

Scientists decipher the role of carbon and the break-up of continents

Geology Page -
0
This artist’s impression shows a view of the surface of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the Solar System. The double star Alpha Centauri AB also appears in the image to the upper-right of Proxima itself. Proxima b is a little more massive than the Earth and orbits in the habitable zone around Proxima Centauri, where the temperature is suitable for liquid water to exist on its surface. (Illustration by ESO/M. Kornmesser)
plate tectonics

Study finds a (much) earlier birth date for tectonic plates

Geology Page -
0
Subduction zones occur where one tectonic plate dives under another. New computer modeling by Magali Billen, professor of earth and planetary sciences at UC Davis, shows why earthquakes on these sinking plates cluster at certain depths and could give insight into processes deep in the Earth. (U.S. Geological Survey)
plate tectonics

New clues to deep earthquake mystery

Geology Page -
0
Researchers developed a technique that allows them to study the atomic arrangements of liquid silicates at the extreme conditions found in the core-mantle boundary. This could lead to a better understanding of the Earth's early molten days, which could even extend to other rocky planets. Credit: Greg Stewart/SLAC National Accelerator Laboratory
plate tectonics

Earth’s evolutionary tale, researchers probe materials at deep-Earth conditions

Geology Page -
0
Francis Macdonald walks along a road near Manitou Springs, Colorado, where an exposed outcrop shows a feature known as the "Great Unconformity."
plate tectonics

The Great Unconformity : A billion years is missing from the...

Geology Page -
0
An artistic cross-section through forming crust approximately 3-4 billion years ago. The presence or absence of plate tectonics during this time is a topic of vigorous scientific debate. A study led by Harvard geologists has found evidence that the crust moved quickly over Earth's surface in the deep past, a hallmark of modern plate tectonics. This suggests that plate motion could have been a meaningful process in early Earth history. Credit: Alec Brenner, Harvard University
plate tectonics

Tectonic plates started shifting earlier than previously thought

Geology Page -
0
Geologists studying rock samples from Baffin Island find lost fragment of continent. Credit: istock
plate tectonics

Geologists find lost fragment of ancient continent in Canada’s North

Geology Page -
0
The rocks the team analysed are the oldest preserved mantle rocks. They allow us to see into the early history of the Earth as if through a window. Credit: UNSW
plate tectonics

Building blocks for life on Earth arrived much later than we...

Geology Page -
0
Benjamin Johnson of Iowa State University woks at an outcrop in remote Western Australia where geologists are studying 3.2-billion-year-old ocean crust. Photo by Jana Meixnerova. Photos provided by Benjamin Johnson.
plate tectonics

Geologists determine early Earth was a ‘water world’ by studying exposed...

Geology Page -
0
Isobath map of the eastern Alborán basin with the volcanic edifice location. Orange lines show the main flood paths. (Image: García-Castellanos et al, 2020, Earth-Sciences Reviews)
plate tectonics

New pieces of evidence found in the Alborán Sea possibly related...

Geology Page -
0
Calculated lattice thermal conductivity of MgSiO3 postperovskite (PPv) and bridgmanite (Brg) under the Earth’s lowermost mantle conditions. Credit: Ehime University
plate tectonics

Heat transport property at the lowermost part of the Earth’s mantle

Geology Page -
0
Horseshoe Bend, Arizona
plate tectonics

As groundwater depletes, arid American West is moving east

Geology Page -
0
Credit: University of St Andrews
plate tectonics

Hidden past of Earth’s oldest continents unearthed

Geology Page -
0
Satellite image of the Gibraltar Arc. Credit: NASA
plate tectonics

Lithospheric thickening beneath the Betics and Rif mountains pulls down the...

Geology Page -
0
Earth's layers
plate tectonics

New insights into the formation of Earth’s crust

Geology Page -
0
A schematic summary of the effect of the convergence rate. Upper image shows a slow convergence rate allows thermal difussion and a derived reduction of slab's density (positive buoyancy). Lower image shows how a faster convergence rate increases the slab's density promoting the negative buoyancy. Credit: Kittiphon Boonma, Scientific Reports
plate tectonics

Study explores the density of the tectonic plates and why they...

Geology Page -
0
The deep structure of the continent Antarctica. Credit: Planetary Visions (credit: ESA/Planetary Visions)
plate tectonics

The Antarctic: Data about the structure of the icy continent

Geology Page -
0
This figure illustrates how inorganic carbon cycles through the mantle more quickly than organic carbon, which contains very little of the isotope carbon-13. Both inorganic and organic carbon are drawn into Earth's mantle at subduction zones (top left).
plate tectonics

Study points to one cause for several mysteries linked to breathable...

Geology Page -
0
Spherules in the Barberton greenstone belt in the Kaapvaal craton, South Africa. Credit: Lowe et al., 2014.
plate tectonics

Extra-terrestrial impacts may have triggered ‘bursts’ of plate tectonics

Geology Page -
0
123...15Page 2 of 15

MOST POPULAR

Load more

MORE ARTICLES

facebook googleplus instagram linkedin pinterest tumblr twitter vk youtube
© 2011-2020. All Rights Reserved.