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A close-up image of bladed barite crystals in the Mapepe Formation in the Barberton Greenstone Belt of South Africa. Credit: Desiree Roerdink

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

Schematic diagram showing the geometry of a typical subduction zone and the production of arc volcanoes. Credit: Xiaotao Yang

Piecing together the Alaska coastline’s fractured volcanic activity

Final model for the East African Rift System. Hashed lines indicate newly discovered broad deforming zone. Arrows represent predicted tectonic plate motions. ABFZ—Andrew Bain Fracture Zone; IFZ—Indomed Fracture Zone; RSZ—Ranotsara shear zone. Figure created by D.S. Stamps.

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

Central Alps of Switzerland

Formation of the Alps: Detaching and uplifting, not bulldozing

Proposed model for deep-carbon transport along a cratonic boundary in the EARS study region.

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

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)

New clues to deep earthquake mystery

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

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

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

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

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.

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

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)

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

Credit: University of St Andrews

Hidden past of Earth’s oldest continents unearthed

Satellite image of the Gibraltar Arc. Credit: NASA

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

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

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

The deep structure of the continent Antarctica. Credit: Planetary Visions (credit: ESA/Planetary Visions)

The Antarctic: Data about the structure of the icy continent

Spherules in the Barberton greenstone belt in the Kaapvaal craton, South Africa. Credit: Lowe et al., 2014.

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

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

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

Earth

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

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

What makes the Earth’s surface move?

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)

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

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

Unusual fault rupture during Kaikōura quake

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