Results 21 to 30 of about 2,652 (262)

The initiation of plate subduction

open access: yesSolid Earth Sciences, 2017
Weidong Sun
doaj   +2 more sources

Eocene initiation of the Cascadia subduction zone: A second example of plume-induced subduction initiation? [PDF]

open access: yesGeosphere, 2019
Includes supplementary material.The existing paradigm for the major ca. 56-48 Ma subduction zone reorganization in the Pacific Northwest of North America is that: (1) the Siletzia large igneous province erupted offshore to the west of North America ...
Robert J. Stern, Trevor A. Dumitru
openaire   +2 more sources

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+5 more sources

Formation of the Xigaze Metamorphic Sole under Tibetan continental lithosphere reveals generic characteristics of subduction initiation

open access: yesCommunications Earth & Environment, 2023
Metamorphic soles found under allochthonous oceanic lithosphere, or ophiolites, are interpreted as derived from lower plate oceanic crust material accreted to upper plate mantle during intraoceanic subduction initiation.
Carl Guilmette   +8 more
doaj   +1 more source

Influence of magma-poor versus magma-rich passive margins on subduction initiation [PDF]

open access: yes, 2022
International audienceWe present a new numerical modelling study of subduction initiation at (hyper-extended) magma-poor and magma-rich continental passive margins.
Auzemery, Antoine   +8 more
core   +1 more source

Ocean-continent subduction cannot be initiated without preceding intra-oceanic subduction!

open access: yesFrontiers 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

Plume‐Induced Sinking of Intracontinental Lithospheric Mantle: An Overlooked Mechanism of Subduction Initiation?

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Although many different mechanisms for subduction initiation have been proposed, only few of them are viable in terms of consistency with observations and reproducibility in numerical experiments.
Sierd Cloetingh   +11 more
doaj   +1 more source

Polarity-reversal subduction zone initiation triggered by buoyant plateau obstruction [PDF]

open access: yes, 2022
Oceanic lithosphere worldwide is younger than ca. 200 Myr, suggesting that it must have been globally recycled by the recurrent formation of new subduction zones since the existence of subduction on Earth.
Schellart, W. P.   +5 more
core   +1 more source

On the initiation of subduction zones

open access: yespure 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
openaire   +3 more sources

A record of spontaneous subduction initiation in the Izu–Bonin–Mariana arc [PDF]

open access: yes, 2015
The initiation of tectonic plate subduction into the mantle is poorly understood. If subduction is induced by the push of a distant mid-ocean ridge or subducted slab pull, we expect compression and uplift of the overriding plate. In contrast, spontaneous
Arculus, Richard J.   +128 more
core   +1 more source

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