Results 31 to 40 of about 116,619 (259)
A transdisciplinary and community-driven database to unravel subduction zone initiation
Nature Communications, 2020 Subduction zones are pivotal for the recycling of Earth’s outer layer into its interior. However, the conditions under which new subduction zones initiate are enigmatic.
F. Crameri +13 more
semanticscholar +1 more source
Geosystems and Geoenvironment, 2023 The convergent subduction zones and the divergent spreading ridges are essential tectonic units that are widely distributed in the South China Sea and the surrounding regions, governing the regional tectonic evolution.
Jie Liao +5 more
doaj +1 more source
Kinematic Boundary Conditions Favouring Subduction Initiation at Passive Margins Over Subduction at Mid-oceanic Ridges [PDF]
, 2021 International audienceWe perform numerical modelling to simulate the shortening of an oceanic basin and the adjacent continental margins in order to discuss the relationship between compressional stresses acting on the lithosphere and the time dependent ...
Beekman, F. +8 more
core +1 more source
Seismological evidence for the earliest global subduction network at 2 Ga ago
Science Advances, 2020 Seismic imaging of Earth’s crust shows signs that subduction became a global phenomenon about 2 billion years ago. The earliest evidence for subduction, which could have been localized, does not signify when plate tectonics became a global phenomenon. To
B. Wan +5 more
semanticscholar +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
openaire +2 more sources
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
doaj +1 more source
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,
Konstantin D. Litasov +4 more
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Introduction to subduction zones [PDF]
pure and applied geophysics, 1988 Subduction zones present many facades to those that observe them. From obvious features to obscure yet important processes, there are many aspects of subduction zones to observe and explain. Notable examples of obvious features are volcanoes, earthquakes, mountain belts, and deep sea trenches; while on the other hand, the unseen process of sediment ...
Ruff, Larry J., Kanamori, Hiroo
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