Ocean-continent subduction cannot be initiated without preceding intra-oceanic subduction! [PDF]
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 +8 more sources
Boron isotopes in boninites document rapid changes in slab inputs during subduction initiation [PDF]
Nature Communications, 2022 The geochemical record of subduction initiation is still not well understood, despite >50 years of study. Here, the authors use boron isotopes in Izu-Bonin boninites to document rapid changes in slab inputs to melting at the start of subduction, related ...
Hong-Yan Li +4 more
doaj +2 more sources
Rapid shear zone weakening during subduction initiation. [PDF]
Proc Natl Acad Sci U S ASubduction zones play a pivotal role in the mechanics of plate tectonics by providing the driving force through slab pull and weak megathrusts that facilitate the relative motion between tectonic plates. The initiation of subduction zones is intricately linked to the accumulation of slab pull and development of weakness at plate boundaries
Li Y, Gurnis M.
europepmc +3 more sources
Anomalous Subduction Initiation: Young Under Old Oceanic Lithosphere [PDF]
Geochemistry, Geophysics, Geosystems, 2021 When subduction initiates along a transform fault, it is often interpreted that the older and therefore denser oceanic lithosphere should evolve into the downgoing plate.
Lulu Zhang +2 more
doaj +4 more sources
Geophysical 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
Subduction Initiation by Plume‐Plateau Interaction: Insights From Numerical Models
Geochemistry, Geophysics, Geosystems, 2020 It has recently been demonstrated that the interaction of a mantle plume with sufficiently old oceanic lithosphere can initiate subduction. However, the existence of large lithospheric heterogeneities, such as a buoyant plateau, in proximity to a rising ...
Marzieh Baes +3 more
doaj +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
Communications 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
Strike slip motion and the triggering of subduction initiation
Frontiers in Earth Science, 2023 Plate tectonic reconstructions of three of the best-defined Cenozoic subduction initiation (SI) events in the western Pacific, Izu-Bonin-Mariana, Vanuatu, and Puysegur subduction zones, show substantial components of strike-slip motion before and during ...
Yida Li, Michael Gurnis
doaj +1 more source