Results 201 to 210 of about 8,127 (242)

Sediment subduction and frictional sliding in a subduction zone

Geology, 1980
New experimental data for the mechanical and thermodynamic properties of clays at high pressure and high temperature are applied to model the frictional sliding in a subduction zone. The model is believed applicable because of the large volume of pelagic sediments that appear to have been subducted with the oceanic plate along active Pacific margins ...
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Stress orientations in subduction zones and the strength of subduction megathrust faults

Science, 2015
Faults well oriented for failure A deck of cards will remain motionless while pressed on from above, but easily separates when sheared. Similarly, the ease by which geological faults rupture depends on the geometry of the fault relative to the size and direction of stress.
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On The initiation of subduction

Journal of Geophysical Research: Solid Earth, 1991
Estimates of shear resistance associated with lithospheric thrusting and convergence represent lower bounds on the force necessary to promote trench formation. Three environments proposed as preferential sites of incipient subduction are investigated: passive continental margins, transform faults/fracture zones, and extinct ridges.
Steve Mueller, Roger J. Phillips
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Age-Dependent Subduction of Oceanic Lithosphere and the Rheology of Subducted Slabs

1983
ABSTRACT On the basis of observational data and model calculations the temperature conditions at the depths of the deepest earthquake foci in subduction zones were determined. It is shown that a simple rheological model, in which the transition from elastic-brittle to plastic behaviour is temperature- and pressure-dependent, adequately explains the ...
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Subduction and orogeny

Journal of Geophysical Research, 1973
Conventional structure data from orogenic belts can be related to events of lithospheric plate subduction regardless of the great difference in depth range of the compared sets. Thrust fabrics and rotation zone fabrics are diagnostic of the two possible orientations of vergenz with respect to subduction and of events of flip, i.e., reversal in dip of ...
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The maximum depth of the subduction channel in modern subduction zones

2022
<p>The subduction channel is located directly above a downgoing oceanic plate and forms by dehydration of this plate. The ascending water-rich fluids react with the mantle to hydrous minerals such as chlorite and amphibole. This process rheologically weakens the mantle and reduces its density so that an upwards-directed mass flow is ...
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2D numerical analysis on microcontinents subductability: subduction or collision?

Oceanic domains can be characterised by lithological heterogeneities, such as microcontinents and continental ribbons, with dimensions vary from tens to hundreds of kilometres. In particular, microcontinents are completely detached from continental margins and isolated by oceanic lithosphere (Gaina & Whittaker, 2020).
Alessandro Regorda, Manuel Roda
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Aegean magmatism: Subduction or post-subduction?

Goldschmidt2022 abstracts, 2022
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Subduction initiation triggered by collision: A review based on examples and models

Earth-Science Reviews, 2022
Gaoxue Yang
exaly  

Subduction initiation from the earliest stages to self-sustained subduction: Insights from the analysis of 70 Cenozoic sites

Earth-Science Reviews, 2021
Serge Lallemand, Diane Arcay
exaly