Results 101 to 110 of about 24,816 (230)

Mercury's Tectonic and Geodynamic History: 2. Contribution of Membrane–Flexural Strains to the Tectonic Record

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Previous analyses of Mercury's tectonic record have arrived at widely varying amounts of global contraction. Contraction also varies spatially, with some regions displaying a near‐zero record of contraction. Here, we investigate the contribution of membrane–flexural strain from lithosphere loading to the tectonic record.
A. Broquet, J. C. Andrews‐Hanna
wiley   +1 more source

Secular Variation in the North American Kimberlite Formation: The Variable Connection to LLSVPs

Geochemistry, Geophysics, Geosystems
Kimberlites are rare and perplexing igneous rocks that may represent the deepest‐sourced melt type extracted from within the Earth's mantle, and their origin may be associated with Large Low Shear Velocity Provinces (LLSVPs) along the core‐mantle ...
C. Adam, P. D. Kempton
doaj   +1 more source

PROBLEMS OF NUMERICAL MODELING OF LARGE-SCALE MANTLE CONVECTION IN THE SUBDUCTION ZONE

Геодинамика и тектонофизика
The article provides a review of modern models of large-scale mantle convection in the zone of a heavy cold oceanic plate (slab) subduction into the upper mantle.
A. N. Chetyrbotsky
doaj   +1 more source

Reproducing past subduction and mantle flow using high-resolution global convection models

Earth and Planetary Physics, 2018
Plate subduction drives both the internal convection and the surface geology of the solid Earth. Despite the rapid increase of computational power, it remains challenging for geodynamic models to reproduce the history of Earth-like subduction and ...
JiaShun Hu, LiJun Liu, Quan Zhou
doaj   +1 more source

Seeing Through Geomorphic Complexity to Recover Tectonics From Topography: Inverting Landscapes for Uplift Histories Using the Wasserstein Distance

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 4, April 2026.
Abstract An important problem in the Earth sciences is extracting information about tectonic and other processes from topography. A general challenge is that geomorphic activity that we typically have little information about during the lifetime of a landscape can introduce geomorphic “noise”.
M. J. Morris, G. G. Roberts, F. D. Richards, A. G. Lipp, E. R. Siddle   +4 more
wiley   +1 more source

Evidence from satellite altimetry for small-scale convection in the mantle [PDF]

Small scale convection can be defined as that part of the mantle circulation in which upwellings and downwellings can occur beneath the lithosphere within the interiors of plates, in contrast to the large scale flow associated with plate motions where ...
Haxby, W. F., Mckenzie, D. P., Parsons, B., Watts, A. B., Weissel, J. K.   +4 more
core   +1 more source

Reply to Comment by Hetényi and Cattin on: “Raising the Roof of the World: Intra‐Crustal Asian Mantle Supports the Himalayan‐Tibetan Orogen”

Tectonics, Volume 45, Issue 4, April 2026.
Abstract We welcome the critique of Hetényi and Cattin on Sternai et al. (2025, https://doi.org/10.1029/2025tc009057), as it brings to light evaluative issues that require clarification and offers an opportunity to articulate more clearly how our work advances understanding of Himalayan‐Tibetan geodynamics.
P. Sternai, S. Pilia, S. Ghelichkhan, P. Bouilhol, A. Menant, L. Ostorero, B. Vaes, R. Esposito, E. Garzanti, S. Cloetingh, D. R. Davies, T. Gerya   +11 more
wiley   +1 more source

The habitability of a stagnant-lid Earth

, 2017
Plate tectonics is a fundamental component for the habitability of the Earth. Yet whether it is a recurrent feature of terrestrial bodies orbiting other stars or unique to the Earth is unknown.
Breuer, D., Godolt, M., Grenfell, J. L., Höning, D., Nikolaou, A., Plesa, A. -C., Ruedas, T., Spohn, T., Stracke, B., Tosi, N.   +9 more
core   +1 more source

Core‐mantle boundary topography and whole‐mantle convection

Geophysical Research Letters, 1989
The seismically observed topography on the core‐mantle boundary (CMB) and the velocities of the surface tectonic plates together constitute important observational constraints on viscous flow models of the Earth's mantle. We show here that the CMB deflections inferred by Morelli and Dziewonski (1987) may be explained in terms of a simple model of whole‐
Alessandro M. Forte, W. Richard Peltier
openaire   +1 more source

Giant Porphyry Copper Deposits Caused by a Slab Jamming in the Mantle Transition Zone

Terra Nova, Volume 38, Issue 2, Page 106-115, April 2026.
ABSTRACT Two giant porphyry copper deposits in the Southern Central Andes formed during the Miocene–Pliocene transition when a bend in the subducting Juan de Fernández hotspot chain jammed in the mantle transition zone, causing mega‐scale slab‐kinking. This geometry implies mechanical resistance that caused East–West compression and eventually a thrust‐
Nipaporn Nakrong, Marnie Forster, Wim Spakman, Hielke Jelsma, Francois Gaboury, Gordon Lister   +5 more
wiley   +1 more source