Results 71 to 80 of about 24,816 (230)

Penetration of Warm Slabs Across the 660 km Boundary: The Potential Role of Hydrous Stishovite

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract We investigate the phase boundary of hydrous/anhydrous post‐spinel transition at conditions relevant to the 660 km boundary. For the hydrous ringwoodite decomposition, the slope is found to range from negative to positive values depending on the distribution of water between the final products, namely, bridgmanite, periclase (mostly anhydrous)
Rabindranath Mondal, Swastika Chatterjee
wiley   +1 more source

Origin and thermal evolution of Mars [PDF]

The thermal evolution of Mars is governed by subsolidus mantle convection beneath a thick lithosphere. Models of the interior evolution are developed by parameterizing mantle convective heat transport in terms of mantle viscosity, the superadiabatic ...
Drake, M. J., Schubert, Gerald, Sleep, N. H., Soloman, S. C., Turcotte, D. L.   +4 more
core   +1 more source

Inferences of mantle viscosity based on ice age data sets: Radial structure [PDF]

, 2016
We perform joint nonlinear inversions of glacial isostatic adjustment (GIA) data, including the following: postglacial decay times in Canada and Scandinavia, the Fennoscandian relaxation spectrum (FRS), late-Holocene differential sea level (DSL ...

core   +2 more sources

Regional‐to‐Global Tectonic and Trench‐Morphology Effects of Oceanic Plateau Subduction

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Regional geodynamic modeling has shown that oceanic plateau subduction can modify the slab behavior. However, few studies have explored these interactions beyond 100 Myr in 3‐D spherical models. Using 3‐D spherical mantle convection models with self‐consistent plate‐like behavior, we investigate how the geometry and rheological properties of ...
Yang Liu, Nicolas Coltice, Laetitia Le Pourhiet, Ziyin Wu   +3 more
wiley   +1 more source

Mountain building and mantle dynamics [PDF]

, 2013
International audienceMountain building at convergent margins requires tectonic forces that can overcome frictional resistance along large-scale thrust faults and support the gravitational potential energy stored within the thickened crust of the orogen.
Becker, T. W., Conrad, Clinton, P., Faccenna, Claudio, Husson, Laurent   +3 more
core   +3 more sources

Is the Deep Martian Mantle Heterogeneous? A Reappraisal of Seismological Evidences

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract It has been proposed that the deep Martian mantle contains distributed heterogeneities preserved since the accretion of the planet. This result relies on a multiple‐scattering interpretation of frequency‐dependent arrival times of P $P$‐waves detected in the spectrograms of teleseismic Martian events.
L. Margerin
wiley   +1 more source

Northeastern Greenland Paleomagnetic Records Indicate the Influence of Geomagnetic Flux Lobe Intensity on Virtual Geomagnetic Pole Migration During the Holocene

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Paleomagnetic and rock magnetic analyses were conducted on sediment cores from the northeastern Greenland Shelf and Young Sound along the western edge of Fram Strait. The paleomagnetic signal in all three sediment cores is characterized by a strong and stable single component magnetization carried by low coercivity ferrimagnetic single domain ...
Juliette Girard, Guillaume St‐Onge, Christof Pearce, France Lagroix, Marit‐Solveig Seidenkrantz, Katrine Juul Andresen, Jean‐Carlos Montero‐Serrano, Pierre Francus   +7 more
wiley   +1 more source

Spatial distribution and possible origin of the high velocity lower crust in the northern margin of the South China Sea

Geoscience Letters
High-velocity lower crust (HVLC) near the continent–ocean transition zone is significant for recording magmatic activity and early rifting history and is likely to be sourced from various types of magma supplies, including passive decompression melting ...
Jih-Hsin Chang, Zih-Lin Hong, Arif Mirza, Liang-Fu Lin, Hsien-Hsiang Hsieh, Justin Yen-Ting Ko, Sung-Ping Chang, Chin-Yeh Chen, Ting-Yi Liu   +8 more
doaj   +1 more source

Driving forces: Slab subduction and mantle convection [PDF]

Mantle convection is the mechanism ultimately responsible for most geological activity at Earth's surface. To zeroth order, the lithosphere is the cold outer thermal boundary layer of the convecting mantle.
Hager, Bradford H.
core   +1 more source

East African topography and volcanism explained by a single, migrating plume [PDF]

, 2020
Anomalous topographic swells and Cenozoic volcanism in east Africa have been associated with mantle plumes. Several models involving one or more fixed plumes beneath the northeastward migrating African plate have been suggested to explain the space-time ...
Gurnis, Michael, Hassan, Rakib, Müller, Dietmar, Williams, Simon E.   +3 more
core   +1 more source