Wednesday, May 18, 2022
Continents

Continents

Latest
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)
Continents

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
Continents

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."
Continents

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

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.
Continents

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)
Continents

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

Geology Page -
0
Credit: University of St Andrews
Continents

Hidden past of Earth’s oldest continents unearthed

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

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

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
Continents

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)
Continents

The Antarctic: Data about the structure of the icy continent

Geology Page -
0
Reconstructed paleo-elevation in southwestern North America at the Late Eocene (36 million years ago). Credit: Bahadori and Holt
Continents

New geologic modeling method explains collapse of ancient mountains in American...

Geology Page -
0
Earth
Continents

Telescopes and satellites combine to map entire planet’s ground movement

Geology Page -
0
Images of the numerical solution at the moment when a supercontinent (left, in purplish grey) begins to break up. In the image on the left, the modelled fictional planet looks much like the Earth: its surface and mantle move spontaneously, at speeds close to those observed on Earth. The distribution of the plates (some of which are large, while many are small) is also similar, as is the topography: red hues represent shallow regions of the ocean (ridges), while blue indicates the deep seafloor. The deepest blue areas correspond to subduction trenches (where a plate is sinking into the mantle). The continents are shown in translucent white (and therefore appear purplish grey).The image on the right shows warm currents (plumes) rising from the bottom of the mantle. Credit: Nicolas Coltice
Continents

What makes the Earth’s surface move?

Geology Page -
0
A detail of the southern wall of the Las Cañadas caldera de . It is the best exposed sector of this volcanic structure. (Imagen: Joan Martí)
Continents

Study provides new insight into the origin of Las Cañadas caldera...

Geology Page -
0
Fig. 1 Map of the 2016 Kaikōura earthquake and surrounding area. (A) Transpressional tectonic setting of the northeastern South Island of New Zealand. (B) Map of surface ruptures from the 2016 Mw 7.8 Kaikōura earthquake, shown in bold black lines with the Papatea fault in red (8, 28). Dots represent scaled relative energy release from back-projection results (15) and are colored by time since rupture onset. Mapped active faults that did not rupture during the Kaikōura event are indicated by thin black lines (28). Credit: Science Advances 02 Oct 2019: Vol. 5, no. 10, eaax5703, DOI: 10.1126/sciadv.aax5703
Continents

Unusual fault rupture during Kaikōura quake

Geology Page -
0
Photographs of alkaline magmatic intrusions in Greenland. The region was volcanically and tectonically active around 1.2 billion years ago. Although no longer active, it is of major interest to geologists because the subsequent uplift and glacial erosion have cut deep into the rift and exposed the magma chambers that once lay well below the surface. Greenland’s magmas were sourced from a mantle that was enriched and contaminated by ancient crustal materials. Credit: University of St Andrews
Continents

Ancient volcanoes reveal Earth’s recycled crust

Geology Page -
0
Continents breaking up and getting back together. Image credit: Naeblys / Getty Images
Continents

Researchers uncover 2.5 billion years of Earth’s continents breaking up and...

Geology Page -
0
India , Asia
Continents

When India Slammed Into Asia

Geology Page -
0
Explosive volcanic crater (maar) with small lake at the bottom close to Dilo
Continents

New light into the recent evolution of the African rift valley

Geology Page -
0
The central Andes Mountains and surrounding landscape, as seen in this true-color image from NASA’s Terra spacecraft, formed over the past 170 million years as the Nazca Plate lying under the Pacific Ocean has forced its way under the South American Plate. Credit: NASA
Continents

Earth’s continental nurseries discovered beneath mountains

Geology Page -
0
Earth
Continents

Scientists propose solution to ‘Gaia puzzle’

Geology Page -
0
1234Page 1 of 4

MOST POPULAR

Load more

MORE ARTICLES

facebook instagram linkedin pinterest tumblr twitter vk youtube
© 2011-2022. All Rights Reserved.