Results 21 to 30 of about 3,661 (237)

The influence of carbonate platform interactions with subduction zone volcanism on palaeo-atmospheric CO2 since the Devonian [PDF]

open access: yesClimate of the Past, 2018
The CO2 liberated along subduction zones through intrusive/extrusive magmatic activity and the resulting active and diffuse outgassing influences global atmospheric CO2.
J. Pall   +11 more
doaj   +1 more source

What Controls Maximum Magnitudes of Giant Subduction Earthquakes?

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Giant earthquakes with magnitudes above 8.5 occur only in subduction zones. Despite the developments made in observing large subduction zone earthquakes with geophysical instruments, the factors controlling the maximum size of these earthquakes are still
Iskander A. Muldashev   +1 more
doaj   +1 more source

A likely geological record of deep tremor and slow slip events from a subducted continental broken formation

open access: yesScientific Reports, 2022
Fluids in subduction zones play a key role in controlling seismic activity, drastically affecting the rheology of rocks, triggering mineral reactions, and lowering the effective stress.
Francesco Giuntoli, Giulio Viola
doaj   +1 more source

Subduction Zones: A Short Review

open access: yes, 2023
Subduction zones are locations on Earth where the oceanic material of one tectonic plate dives below the material (oceanic or continental) of another tectonic plate into the mantle. They are the most complex and dramatic tectonic features on our home planet and have been the subject of intense investigations, some of which pre-date the advent of the ...
openaire   +2 more sources

Back to full interseismic plate locking decades after the giant 1960 Chile earthquake

open access: yesNature Communications, 2018
Great megathrust earthquakes arise from the sudden release of strain accumulated during centuries of interseismic plate convergence. Here, the authors reconstruct interseismic strain accumulation since the 1960 Chile earthquake, finding a transient ...
Daniel Melnick   +8 more
doaj   +1 more source

Fluid‐Mediated Mass Transfer Between Mafic and Ultramafic Rocks in Subduction Zones

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Metasomatic reaction zones between mafic and ultramafic rocks exhumed from subduction zones provide a window into mass‐transfer processes at high pressure.
E. A. Codillo   +6 more
doaj   +1 more source

Subduction-zone parameters that control slab behavior at the 660-km discontinuity revealed by logistic regression analysis and model selection

open access: yesFrontiers in Earth Science, 2022
The potential mechanisms that drive the behavior of subducted oceanic plates at the 660-km discontinuity are subject to debate. Here we conduct logistic regression analysis and model selection to determine the key subduction-zone parameters in natural ...
Atsushi Nakao   +6 more
doaj   +1 more source

Features of the Largest Earthquake Seismic Cycles in the Western Part of the Aleutian Subduction Zone

open access: yesGeosciences, 2022
We discussed the peculiarities of the seismic cycle in Aleutian subduction zone, characterized by an oblique subduction setting. It was shown that the orientation of the plate convergence vector relative to the subduction zone axis can have a significant
Leopold I. Lobkovsky   +3 more
doaj   +1 more source

Differentiating induced versus spontaneous subduction initiation using thermomechanical models and metamorphic soles

open access: yesNature Communications, 2021
The mechanism of subduction initiation is a key to modern plate tectonics. Here, using numerical modeling and geological observations, the authors find that the majority of active and paleo subduction zones with metamorphic soles likely formed during ...
Xin Zhou, Ikuko Wada
doaj   +1 more source

Natural observations of subduction initiation: Implications for the geodynamic evolution of the Paleo-Asian Ocean

open access: yesGeosystems and Geoenvironment, 2022
Initiation of new subduction zones is an integral part of Earth's plate tectonics regime. It is generally accepted that the negative buoyancy of sufficiently old oceanic lithosphere provides the primary driving force for subduction initiation.
Gaoxue Yang   +6 more
doaj   +1 more source

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