Results 281 to 290 of about 29,724 (300)
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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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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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2017
International audience; Subduction zones are characterized by multiple behaviors, dynamics, or geometries. Most of them results from the complex interplay between various parameters. In this article, we define the most common parameters used by scientists and then mention the studies where (set of) parameters are tested empirically, or experimentally ...
Lallemand, Serge, Heuret, Arnauld
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International audience; Subduction zones are characterized by multiple behaviors, dynamics, or geometries. Most of them results from the complex interplay between various parameters. In this article, we define the most common parameters used by scientists and then mention the studies where (set of) parameters are tested empirically, or experimentally ...
Lallemand, Serge, Heuret, Arnauld
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Stress orientations in subduction zones and the strength of subduction megathrust faults [PDF]
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 role of subducting oceanic plateaus in the development of shallow flat subduction
Tectonophysics, 2002Abstract Oceanic plateaus, aseismic ridges or seamount chains all have a thickened crust and their subduction has been proposed as a possible mechanism to explain the occurrence of flat subduction and related absence of arc magmatism below Peru, Central Chile and at the Nankai Trough (Japan). Their extra compositional buoyancy could prohibit the slab
van Hunen , J. +2 more
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2009
Morphologically, mid-ocean ridges are the most complex and geologically active terrains on the seabed. They are now recognized as the places where the Earth’s oceanic crust is constructed (starting with the seminal paper of Vine and Matthews, 1963). Characterized by high topographic relief, the mid-ocean ridges are dominated by volcanic and tectonic ...
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Morphologically, mid-ocean ridges are the most complex and geologically active terrains on the seabed. They are now recognized as the places where the Earth’s oceanic crust is constructed (starting with the seminal paper of Vine and Matthews, 1963). Characterized by high topographic relief, the mid-ocean ridges are dominated by volcanic and tectonic ...
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Nature Geoscience, 2010
Eastern Indonesia hosts one of the most complex and fascinating tectonic systems on the planet. Palaeogeographical reconstructions indicate that subduction and deformation of a single slab of oceanic crust created the complicated configuration.
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Eastern Indonesia hosts one of the most complex and fascinating tectonic systems on the planet. Palaeogeographical reconstructions indicate that subduction and deformation of a single slab of oceanic crust created the complicated configuration.
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Nature, 2017
Rocks are subjected to increased pressure as they are buried during subduction. Contrary to general belief, a study suggests that peak pressures recorded in subducted rocks might not reflect their maximum burial depths.
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Rocks are subjected to increased pressure as they are buried during subduction. Contrary to general belief, a study suggests that peak pressures recorded in subducted rocks might not reflect their maximum burial depths.
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Nature Geoscience, 2007
A unique plate interaction under eastern Japan poses an additional seismic risk for Tokyo and the surrounding region.
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A unique plate interaction under eastern Japan poses an additional seismic risk for Tokyo and the surrounding region.
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2016
I live above a “failed” slab of the Earths crust. The Farallon Plate slid under the North American Plate over a period of many millions of years. The process of subduction seems nearly complete now, and so we have some idea of how it all worked out over time.
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I live above a “failed” slab of the Earths crust. The Farallon Plate slid under the North American Plate over a period of many millions of years. The process of subduction seems nearly complete now, and so we have some idea of how it all worked out over time.
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Age-Dependent Subduction of Oceanic Lithosphere and the Rheology of Subducted Slabs
1983ABSTRACT 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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