Results 21 to 30 of about 30,329 (274)
Plume‐Induced Subduction Initiation: Single‐Slab or Multi‐Slab Subduction? [PDF]
Geochemistry, Geophysics, Geosystems, 2020 AbstractInitiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. Here, we investigate factors controlling the number and shape of retreating subducting slabs formed by plume‐lithosphere ...
Marzieh Baes +3 more
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Ocean-continent subduction cannot be initiated without preceding intra-oceanic subduction!
Frontiers in Earth Science, 2022 The formation of new subduction zones is a key element of plate tectonics and the Wilson cycle, and many different controlling mechanisms have been proposed to initiate subduction.
Alexander Koptev +4 more
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Granite subduction: Arc subduction, tectonic erosion and sediment subduction
Gondwana Research, 2009 Abstract Continental growth has been episodic, reflecting the episodic nature of mantle dynamics as well as surface dynamics of the Earth, the net result of which is exhibited by the present mantle with two huge reservoirs of TTG rocks, one on the surface continents and the other on the D″ layer on the Core-Mantle Boundary (CMB).
H. Senshu +5 more
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Aseismic ridge subduction and flat subduction: Insights from three-dimensional numerical models
Earth and Planetary Physics, 2023 Flat subduction can significantly influence the distribution of volcanism, stress state, and surface topography of the overriding plate. However, the mechanisms for inducing flat subduction remain controversial.
Hui Zhao, Wei Leng
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Nature, 2019 A hidden carbon cycle exists inside Earth. Every year, megatons of carbon disappear into subduction zones, affecting atmospheric carbon dioxide and oxygen over Earth’s history. Here we discuss the processes that move carbon towards subduction zones and transform it into fluids, magmas, volcanic gases and diamonds.
Plank, Terry A., Manning, Craig
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Kinematics of subduction and subduction‐induced flow in the upper mantle [PDF]
Journal of Geophysical Research: Solid Earth, 2004 Results of fluid dynamical experiments are presented to model the kinematics of lithospheric subduction in the upper mantle. The experiments model a dense high‐viscosity plate (subducting lithosphere) overlying a less dense low‐viscosity layer (upper mantle). The overriding lithosphere is not incorporated.
Wouter P. Schellart, Wouter P. Schellart
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Geosystems 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
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Wet subduction versus cold subduction
Geophysical Research Letters, 2005 In situ X‐ray diffraction study of post‐spinel transformation in hydrous peridotite (2 wt.% H2O) indicates that the phase boundary is shifted to higher pressures by 0.6 GPa relative to anhydrous peridotite at 1473 K, whereas, it shows no obvious shift at high temperature around 1873 K. A linear equation for the boundary is P (GPa) = −0.002 T (K) + 26.3,
Akio Suzuki +4 more
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On the Thermodynamics of Subduction
Journal of Physical Oceanography, 1995 Abstract The thermodynamic processes attendant on the transfer of fluid between a surface mixed layer and a stratified thermocline beneath are discussed. For a parcel of fluid in the mixed layer to pass into the stratified thermocline—to subduct—it must be stratified by buoyancy input; this buoyancy can be supplied by local air–sea exchange and/or by ...
Marshall, D, Marshall, J
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On the initiation of subduction zones
pure and applied geophysics, 1989 Analysis of the relation between intraplate stress fields and lithospheric rheology leads to greater insight into the role that initiation of subduction plays in the tectonic evolution of the lithosphere. Numerical model studies show that if after a short evolution of a passive margin (time span a few tens of million years) subduction has not yet ...
Cloetingh, S.A.P.L. +3 more
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