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Plume-Induced subduction initiation
2021Subduction initiation induced by a hot and buoyant mantle plume head is unique among proposed subduction initiation mechanisms because it does not require pre-existing weak zones or other forces for lithospheric collapse. Since recognition of the first evidence of subduction nucleation induced by a mantle plume in the Late Cretaceous Caribbean realm ...
Baes, Marzieh +4 more
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On The initiation of subduction
Journal of Geophysical Research: Solid Earth, 1991Estimates 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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Subduction initiation at passive margins
2010Subduction is a key process for terrestrial plate tectonics, but its initiation is still not entirely understood. In particular, despite the abundance of both passive and active continental margins on Earth, no obvious cases of transition between them have been identified so far.
Nikolaeva, K. +2 more
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Contributions to Mineralogy and Petrology, 2011
We establish the ‘subduction initiation rule’ (SIR) which predicts that most ophiolites form during subduction initiation (SI) and that the diagnostic magmatic chemostratigraphic progression for SIR ophiolites is from less to more HFSE-depleted and LILE-enriched compositions.
Scott A. Whattam, Robert J. Stern
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We establish the ‘subduction initiation rule’ (SIR) which predicts that most ophiolites form during subduction initiation (SI) and that the diagnostic magmatic chemostratigraphic progression for SIR ophiolites is from less to more HFSE-depleted and LILE-enriched compositions.
Scott A. Whattam, Robert J. Stern
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Subduction initiation: spontaneous and induced
Earth and Planetary Science Letters, 2004Abstract The sinking of lithosphere at subduction zones couples Earth's exterior with its interior, spawns continental crust and powers a tectonic regime that is unique to our planet. In spite of its importance, it is unclear how subduction is initiated.
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Subduction initiation and igneous petrogenesis
2018<p>The impact of subduction initiation on regional to global tectonics and the compositions of major Earth reservoirs are topics of vigorous ongoing research. Here, pristine glasses extracted from ~51.9 Myr old basalts and younger boninites that erupted in the Izu-Bonin Mariana forearc immediately after subduction initiation were analyzed by ...
Daniel A. Coulthard +3 more
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Subduction initiates at straight passive margins
Geology, 2014Subduction initiation at straight passive margins can be investigated with two-dimensional (2-D) numerical models, because the geometry is purely cylindrical. However, on Earth, straight margins rarely occur. The construction of 3-D models is therefore critical in the modeling of spontaneous subduction initiation at realistic, curved passive margins ...
F.O. Marques +4 more
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Characterization of subduction initiation
Journal of Oceanology and Limnology, 2022Weidong Sun, Lipeng Zhang
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Self‐consistent subduction initiation induced by mantle flow
Terra Nova, 2015AbstractMantle circulation in planets with strongly temperature‐dependent viscosity results in stagnant‐lid convection. It is fundamental to understand how this stagnant‐lid regime can change into a plate‐like convection regime as on the present‐day Earth. Here, we use 2D numerical models to study subduction initiation from an initial stagnant lid with
Gang Lu +3 more
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Lithos, 2015
We herein reappraise the pressure–temperature (PT) evolution of the high-pressure and low-temperature (HP–LT) Tavsanli zone (western Turkey) in order to (i) better characterize rock units exhumed along a cooling subduction interface, from birth to steady state and (ii) constrain exhumation and detachment dynamics, as well as mechanical coupling between
Plunder, Alexis +4 more
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We herein reappraise the pressure–temperature (PT) evolution of the high-pressure and low-temperature (HP–LT) Tavsanli zone (western Turkey) in order to (i) better characterize rock units exhumed along a cooling subduction interface, from birth to steady state and (ii) constrain exhumation and detachment dynamics, as well as mechanical coupling between
Plunder, Alexis +4 more
openaire +4 more sources