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

