Results 1 to 10 of about 497,770 (261)
Horizontally forced initiation of the Izu-Bonin-Mariana subduction zone
Communications Earth & EnvironmentThe sparsity of a direct record for the moment of subduction zone initiation has led to various models describing the infancy and evolution of modern oceanic subduction systems.
Liang Liu +6 more
doaj +2 more sources
Plume-Induced Subduction Initiation: Revisiting Models and Observations
Frontiers in Earth Science, 2021 Subduction 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.
Marzieh Baes +6 more
doaj +1 more source
Geophysical Research Letters, 2022 In this study, we for the first time applied a joint geodynamic‐geophysical inversion approach to oceanic plateau subduction models, and compared the subduction style and corresponding topography and Bouguer gravity of two representative subduction ...
Hao Dong +9 more
doaj +1 more source
Subduction Duration and Slab Dip
Geochemistry, Geophysics, Geosystems, 2020 The dip angles of slabs are among the clearest characteristics of subduction zones, but the factors that control them remain obscure. Here, slab dip angles and subduction parameters, including subduction duration, the nature of the overriding plate, slab
Jiashun Hu, Michael Gurnis
doaj +1 more source
Ophiolites in the Central Asian Orogenic Belt record Cambrian subduction initiation processes
Communications Earth & EnvironmentSubduction initiation remains elusive because no present example exists. Ophiolites formed over nascent subduction zones in the past provide the key to constraining the processes of subduction initiation.
Mingshuai Zhu +10 more
doaj +1 more source
Self-replicating subduction zone initiation by polarity reversal
Communications Earth & Environment, 2022 New subduction zones can form via a self-replicating process, without the need for external forcing, when buoyant blocks reach pre-existing subduction trenches and cause polarity reversals, according to 3D numerical ...
Jaime Almeida +4 more
doaj +1 more source
Subduction Initiation at the Corner of Small Oceanic Basins
Geophysical Research LettersIn Southeast Asia, emerging subduction zones often appear to begin at the corners of small oceanic basins, which have a triangular‐indenter continent–ocean boundary geometry.
Miao Dong +4 more
doaj +1 more source
Reaction-induced rheological weakening enables oceanic plate subduction
Nature Communications, 2016 Plate subduction initiation requires weak boundaries between tectonic plates, but how weaknesses develop is unclear. Here, using high-pressure friction experiments on peridotite gouge material, the authors show that hydration reactions contribute to the ...
Ken-ichi Hirauchi +4 more
doaj +1 more source
Subduction initiation along transform faults: The proto-Franciscan subduction zone [PDF]
Lithosphere, 2012 The initiation of subduction is a process that cannot be observed directly but must be inferred from the rock record after subduction is well established. There are many approaches possible to infer the origin of subduction zones that are still active, but paleosubduction zones present special challenges, since their geodynamic setting can no longer be
John W. Shervais, Sung Hi Choi
openaire +1 more source
Slab Temperature Evolution Over the Lifetime of a Subduction Zone
Geochemistry, Geophysics, Geosystems, 2021 The thermal evolution of subducting slabs controls a range of subduction processes, yet we lack a robust understanding of how thermal structure develops over a subduction zone's lifetime. We investigate the time‐dependence of slab thermal structure using
A. F. Holt, C. B. Condit
doaj +1 more source