Results 31 to 40 of about 13,955 (253)
Geochemistry, 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
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Frontiers in Earth Science, 2021 We perform numerical modelling to simulate the shortening of an oceanic basin and the adjacent continental margins in order to discuss the relationship between compressional stresses acting on the lithosphere and the time dependent strength of the mid ...
A. Auzemery +7 more
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Effects of rheological stratification and elasticity of lithosphere on subduction initiation
Frontiers in Earth Science, 2022 The breaking and bending of rigid and elastic lithosphere was probably essential for the initiation of plate subduction, although how this occurred is still poorly understood.
Ikuo Katayama +2 more
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Can subduction initiation at a transform fault be spontaneous? [PDF]
Solid Earth, 2020 We present an extensive parametric exploration of the feasibility of “spontaneous” subduction initiation, i.e., lithospheric gravitational collapse without any external forcing, at a transform fault (TF).
D. Arcay +3 more
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Evolving force balance during incipient subduction [PDF]
, 2004 Nearly half of all active subduction zones initiated during the Cenozoic. All subduction zones associated with active back arc extension have initiated since the Eocene, hinting that back arc extension may be intimately associated with an interval ...
Gurnis, Michael, Hall, Chad, Lavier, Luc
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A transdisciplinary and community-driven database to unravel subduction zone initiation
Nature Communications, 2020 Despite numerous advances in our understanding of subduction since the theory of plate tectonics was established, the mechanisms of subduction zone initiation remain highly controversial.
Fabio Crameri +13 more
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Impact of upper mantle convection on lithosphere hyperextension and subsequent horizontally forced subduction initiation [PDF]
Solid Earth, 2020 Many plate tectonic processes, such as subduction initiation, are embedded in long-term (>100 Myr) geodynamic cycles often involving subsequent phases of extension, cooling without plate deformation and convergence. However, the impact of upper mantle
L. G. Candioti +3 more
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Timescales of subduction initiation and evolution of subduction thermal regimes
Earth and Planetary Science Letters, 2022 Subduction zones are first-order features of plate tectonics on Earth, yet the mechanisms by which subduction initiates remain enigmatic and controversial. Here, we reappraise the timing of metamorphism of the rock units first detached from the leading edge of the downgoing slab during initiation of the Neotethys subduction, now preserved in the ...
Soret, Mathieu +8 more
openaire +3 more sources
Boninite and Harzburgite from Leg 125 (Bonin-Mariana Forearc): A Case Study of Magma Genesis during the Initial Stages of Subduction [PDF]
, 1992 Holes drilled into the volcanic and ultrabasic basement of the Izu-Ogasawara and Mariana forearc terranes during Leg 125 provide data on some of the earliest lithosphere created after the start of Eocene subduction in the Western Pacific.
Arculus, Richard J. +6 more
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Subduction initiation at passive margins: Numerical modeling [PDF]
Journal of Geophysical Research: Solid Earth, 2010 Subduction 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.
K. Nikolaeva, T. V. Gerya, F. O. Marques
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