Results 31 to 40 of about 22,424 (265)

Simple Kinematics of Subduction Zones [PDF]

open access: yesInternational Geology Review, 2006
Two main types of subduction zones can be distinguished: (1) those where the subduction hinge migrates away from the upper plate; and (2) those in which the subduction hinge migrates toward the upper plate. Apart from a few exceptions, this distinction seems to apply particularly for W-directed subduction zones and E- or NE-directed subduction zones ...
DOGLIONI, Carlo   +2 more
openaire   +3 more sources

The link between great earthquakes and the subduction of oceanic fracture zones [PDF]

open access: yesSolid Earth, 2012
Giant subduction earthquakes are known to occur in areas not previously identified as prone to high seismic risk. This highlights the need to better identify subduction zone segments potentially dominated by relatively long (up to 1000 yr and more ...
R. D. Müller, T. C. W. Landgrebe
doaj   +1 more source

(I) A Coupled Geochemical and Geodynamical Approach to Subduction Zone Modeling and (II) Development of Color in Greenish Quartz [PDF]

open access: yes, 2008
(I) We couple a petrological model with a 2D thermal and variable viscosity flow model to describe and compare fundamental processes occurring within subduction zones.
Hebert, Laura Baker
core   +1 more source

Barium content of Archaean continental crust reveals the onset of subduction was not global

open access: yesNature Communications, 2022
Only subduction zone can produce Ba-rich TTG, representing a proxy for the onset of subduction. Statistical increases in Ba contents of Archaean TTGs reveal the diachronous onset of subduction from regional at 4 Ga to globally complete after 2.7 ...
Guangyu Huang   +4 more
doaj   +1 more source

Slab pull, slab weakening, and their relation to deep intra-slab seismicity [PDF]

open access: yes, 2005
Subduction zone seismicity is highly variable. Great earthquakes occur at few subduction zones around the world, with significant variation in size and frequency of deep events. Interactions between overriding and subducting plates and slab pull strength
Lithgow‐bertelloni, Carolina   +8 more
core   +1 more source

Recent Crustal Deformation in West-Central South America [PDF]

open access: yes, 2003
I use interferometric synthetic aperture radar (InSAR) to create maps of crustal deformation along the coast and within the volcanic arc of central South America. I image deformation associated with six subduction zone earthquakes, four volcanic centers,
Pritchard, Matthew Earl
core   +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

Influence of magma-poor versus magma-rich passive margins on subduction initiation [PDF]

open access: yes, 2022
International audienceWe present a new numerical modelling study of subduction initiation at (hyper-extended) magma-poor and magma-rich continental passive margins.
Auzemery, Antoine   +8 more
core   +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

Numerical models of slab migration in continental collision zones [PDF]

open access: yesSolid Earth, 2012
Continental collision is an intrinsic feature of plate tectonics. The closure of an oceanic basin leads to the onset of subduction of buoyant continental material, which slows down and eventually stops the subduction process.
V. Magni   +3 more
doaj   +1 more source

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