Results 51 to 60 of about 2,657 (262)
Anomalous Subduction Initiation: Young Under Old Oceanic Lithosphere
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 +1 more source
Subduction initiation at the corner of small oceanic basin
Geophysical Research Letters, 2023 In 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. To investigate the influence of a triangular indenter on subduction initiation, we performed a series of three-dimensional numerical simulations with varying indenter angles and ...
Miao Dong +4 more
openaire +2 more sources
A Miocene onset of the modern extensional regime in the Isparta Angle: constraints from the Yalvaç Basin (southwest Turkey) [PDF]
, 2016 The pre-Neogene Tauride fold-and-thrust belt, comprising Cretaceous ophiolites and metamorphic rocks and non-metamorphic carbonate thrust slices in southern Turkey, is flanked and overlain by Neogene sedimentary basins. These include poorly studied intra-
Vissers, Reinoud L. M. +9 more
core +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
Subduction Initiation Simulation Results [PDF]
, 2017 How subduction initiates with mechanically unfavorable lithospheric heterogeneities is important and rarely studied. We investigate this with a geodynamic model for the Puysegur Incipient Subduction Zone (PISZ) south of New Zealand.
Mao, Xiaolin, May, Dave, Gurnis, Micheal
core +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
Recognizing detachment-mode seafloor spreading in the deep geological past [PDF]
, 2013 Large-offset oceanic detachment faults are a characteristic of slow- and ultraslow-spreading ridges, leading to the formation of oceanic core complexes (OCCs) that expose upper mantle and lower crustal rocks on the seafloor.
Anderson, M.W. +7 more
core +2 more sources
Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT We perform probabilistic seismic hazard analysis (PSHA) in the Shillong Plateau by clubbing the up‐to‐date earthquake data and seismotectonic properties of the study area. Twenty‐one areal seismic sources are delineated based on the updated earthquake catalog, tectonic, and fault plane solutions.
Mohd Shahabuddin +2 more
wiley +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