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Numerical comparison of different convergent plate contacts: subduction channel and subduction fault [PDF]

open access: yesGeophysical Journal International, 2007
Summary At convergent plate boundaries, the properties of the actual plate contact are important for the overall dynamics. Convergent plate boundaries both mechanically decouple and link tectonic plates and accommodate large amounts of strain.
Rob Govers, Rinus Wortel
exaly   +3 more sources

Structural and rheological evolution of the Laramide subduction channel in southern California [PDF]

open access: yesSolid Earth, 2017
The Pelona Schist in the San Gabriel Mountains, southern California, formed in the Laramide subduction channel, exhibits multiple phases of deformation/metamorphism and provides valuable insights into the rheological properties of the subduction channel.
H. Xia, J. P. Platt
doaj   +4 more sources

Evidence for a serpentinized plate interface favouring continental subduction [PDF]

open access: yesNature Communications, 2020
The dynamics of continental subduction is largely controlled by the rheological properties of rocks involved along the subduction channel. Here, the authors reveal a prominent, yet previously undetected, low-velocity body beneath the Western Alps, along ...
Liang Zhao   +12 more
doaj   +2 more sources

Control of high oceanic features and subduction channel on earthquake ruptures along the Chile–Peru subduction zone

open access: yesPhysics of the Earth and Planetary Interiors, 2011
Abstract We discuss the earthquake rupture behavior along the Chile–Peru subduction zone in terms of the buoyancy of the subducting high oceanic features (HOF's), and the effect of the interplay between HOF and subduction channel thickness on the degree of interplate coupling.
Eduardo Contreras-Reyes, Carrizo D
exaly   +4 more sources

Carbonation and deformation of oceanic serpentinites in the Elba subduction channel: Evidence for fluid–rock interaction at seismogenic depth

open access: yesEarth and Planetary Science Letters
We present a multi-disciplinary investigation of the deformation and carbonation history of oceanic serpentinites involved in the plate interface of the Cretaceous-Eocene subduction complex exposed in the Elba Island —an exceptionally well-preserved example of oceanic subduction system.
Vanni Moggi-Cecchi   +2 more
exaly   +3 more sources

Transient Permeability of a Deep‐Seated Subduction Interface Shear Zone

open access: yesGeophysical Research Letters, 2023
Slow slip and tremor is observed along many subduction margins and is commonly linked to fluid pressure variations and migration. Accurate estimates of porosity and permeability around subduction megathrust shear zones are vital for understanding fluid ...
J. Muñoz‐Montecinos, W. M. Behr
doaj   +1 more source

Pre‐Subduction Architecture Controls Coherent Underplating During Subduction and Exhumation (Nevado‐Filábride Complex, Southern Spain)

open access: yesGeochemistry, Geophysics, Geosystems, 2023
The interplay between structural and metamorphic processes operating along the deep plate interface in subduction zones remains elusive as much of the geologic record is recycled into the mantle.
Eirini M. Poulaki   +2 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

Channel flow, tectonic overpressure, and exhumation of high-pressure rocks in the Greater Himalayas [PDF]

open access: yesSolid Earth, 2018
The Himalayas are the archetype of continental collision, where a number of long-standing fundamental problems persist in the Greater Himalayan Sequence (GHS): (1) contemporaneous reverse and normal faulting, (2) inversion of metamorphic grade, (3 ...
F. O. Marques   +4 more
doaj   +1 more source

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