Results 21 to 30 of about 31,153 (271)

Natural observations of subduction initiation: Implications for the geodynamic evolution of the Paleo-Asian Ocean

open access: yesGeosystems 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

Control of Subduction Zone Age and Size on Flat Slab Subduction

open access: yesFrontiers in Earth Science, 2020
Flat slab subduction is an enigmatic style of subduction where the slab attains a horizontal orientation for up to several hundred kilometers below the base of the overriding plate.
Wouter Pieter Schellart
doaj   +1 more source

Subduction and Hydrogen Release: The Case of Bolivian Altiplano

open access: yesGeosciences, 2023
Natural hydrogen is known to be generated in the crust by water/rock interactions, especially the oxidation of iron-rich rock or radiolysis. However, other sources, especially deeper ones, exist. In the context of subduction, the dehydration of the slab,
Isabelle Moretti   +3 more
doaj   +1 more source

Subduction Duration and Slab Dip

open access: yesGeochemistry, 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

TerraceM-2: A Matlab® Interface for Mapping and Modeling Marine and Lacustrine Terraces

open access: yesFrontiers in Earth Science, 2019
The morphology of marine and lacustrine terraces has been largely used to measure past sea- and lake-level positions and estimate vertical deformation in a wealth of studies focused on climate and tectonic processes.
Julius Jara-Muñoz   +5 more
doaj   +1 more source

What Controls Maximum Magnitudes of Giant Subduction Earthquakes?

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Giant earthquakes with magnitudes above 8.5 occur only in subduction zones. Despite the developments made in observing large subduction zone earthquakes with geophysical instruments, the factors controlling the maximum size of these earthquakes are still
Iskander A. Muldashev   +1 more
doaj   +1 more source

Back to full interseismic plate locking decades after the giant 1960 Chile earthquake

open access: yesNature Communications, 2018
Great megathrust earthquakes arise from the sudden release of strain accumulated during centuries of interseismic plate convergence. Here, the authors reconstruct interseismic strain accumulation since the 1960 Chile earthquake, finding a transient ...
Daniel Melnick   +8 more
doaj   +1 more source

Transient Injection of Flow: How Torn and Bent Slabs Induce Unusual Mantle Circulation Patterns Near a Flat Slab

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Torn and bent slabs are usually associated with flat‐slab subduction where the descending plate develops a horizontal geometry beneath the overlying continent.
Xiaowen Liu, Russell Pysklywec
doaj   +1 more source

The Signature of Lithospheric Anisotropy at Post‐Subduction Continental Margins: New Insight From XKS Splitting Analysis in Northern Borneo

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The relative paucity of recent post‐subduction environments globally has meant that, so far, little is known about tectonic processes that occur during and after subduction termination, as previously convergent tectonic plates adjust to the new stress ...
C. A. Bacon   +6 more
doaj   +1 more source

Temporal Relationship of Slow Slip Events and Microearthquake Seismicity: Insights From Earthquake Automatic Detections in the Northern Hikurangi Margin, Aotearoa New Zealand

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Slow slip events in the northern Hikurangi margin of Aotearoa New Zealand occur every 18–24 months and last for several weeks before returning to average convergence rates of around 38 mm/yr.
Jefferson Yarce   +2 more
doaj   +1 more source

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