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3-D thermo-mechanical modeling of plume-induced subduction initiation
Earth and Planetary Science Letters, 2016 Here, we study the 3-D subduction initiation process induced by the interaction between a hot thermochemical mantle plume and oceanic lithosphere using thermo-mechanical viscoplastic finite difference marker-in-cell models. Our numerical modeling results
Marzieh Baes +2 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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Catastrophic initiation of subduction following forced convergence across fracture zones
Earth and Planetary Science Letters, 2003 Although the formation of subduction zones plays a central role in plate evolution, the processes and geological settings that lead to the initiation of subduction are poorly understood.
Michael Gurnis +2 more
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Subduction initiation terranes exposed at the front of a 2 Ma volcanically-active subduction zone [PDF]
Earth and Planetary Science Letters, 2019 The development of ideas leading to a greater understanding of subduction initiation is limited by the scarcity of present-day examples. Furthermore, the few examples identified so far unfortunately provide few insights into the nature of magmatism at ...
Martin Patriat +2 more
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The Initiation of Subduction: Criticality by Addition of Water?
Science, 2001Subduction is a major process of plate tectonics; however, its initiation is not understood. We used high-resolution (less than 1 kilometer) finite-element models based on rheological data of the lithosphere to investigate the role played by water on initiating subduction. A solid-fluid thermomechanical instability is needed to drive a cold, stiff, and
Regenauer-Lieb K, Yuen DA, Branlund J
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Do microcontinents nucleate subduction initiation?
Geology, 2023Abstract Subduction initiation is a pivotal process in plate tectonics. Models of subduction initiation include the collapse of passive margins, oceanic transform faults, inversion of oceanic core complexes, and ridge failure but have ignored the potential effects of continental crust relicts within the oceanic crust.
Mingshuai Zhu +7 more
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Initiation of intracontinental subduction in the Himalaya
Journal of Geophysical Research: Solid Earth, 1978Independent arguments based on topographic stress and crustal strength give upper limits of 200 bars and 300 bars, respectively, for the average shear stress on the intracontinental thrust fault that formed the Himalaya. According to either a one‐dimensional or a two‐dimensional fault model, such stresses could not have produced the Himalayan granites ...
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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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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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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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