Results 101 to 110 of about 120,399 (317)

Ophiolites in the Central Asian Orogenic Belt record Cambrian subduction initiation processes

open access: yesCommunications Earth & Environment
Subduction 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

3D Quantification of Subsidence During Pyrenean Retro‐Wedge Initiation: Role of Structural and Thermal Inheritance on Hyperextended Margin Inversion (Aquitaine Basin)

open access: yesTerra Nova, EarlyView.
ABSTRACT We present novel 3D subsidence data enabling vertical movements' quantification during the early formation of the Pyrenean retro‐wedge. From Cenomanian to Turonian times, subsidence is relatively low (~26 ± 10 m/Myr), corresponding to a brief 10 Myr thermal re‐equilibration of the European lithosphere following the hyperextended rift episode ...
Benoit Issautier   +5 more
wiley   +1 more source

Neogene plate tectonic reconstructions and geodynamics of North Island sedimentary basins: Implications for the petroleum systems [PDF]

open access: yes, 2006
Although the modern Australia-Pacific plate boundary through New Zealand is relatively straight, there have been significant changes in its geometry during the Neogene. Within the North Island sector there has been a fundamental transition from an Alpine
Furlong, Kevin P., Kamp, Peter J.J.
core   +1 more source

Effects of Topography on Seismic-Wave Propagation: An Example from Northern Taiwan [PDF]

open access: yes, 2009
Topography influences ground motion and, in general, increases the amplitude of shaking at mountain tops and ridges, whereas valleys have reduced ground motions, as is observed from data recorded during and after real earthquakes and from numerical ...
Huang, Bor-Shouh   +3 more
core   +3 more sources

Tomographic Imaging of Slab Segmentation and Deformation in the Greater Antilles

open access: yesGeochemistry, Geophysics, Geosystems, 2018
We present a new tomographic P wave model of the upper mantle in the east Caribbean region. The model was built using 3‐D finite frequency sensitivity kernels and ~20,000 teleseismic P and PP traveltime residuals from 535 events recorded across 130 ...
Cooper W. Harris   +2 more
doaj   +1 more source

Basin formation, magmatism, and exhumation document southward migrating flat-slab subduction in the central Andes

open access: hybrid, 2023
Joel E. Saylor   +9 more
openalex   +1 more source

Persistent elastic behavior above a megathrust rupture patch: Nias island, West Sumatra [PDF]

open access: yes, 2008
We quantify fore-arc deformation using fossil reefs to test the assumption commonly made in seismic cycle models that anelastic deformation of the fore arc is negligible.
Adams   +103 more
core   +1 more source

Rheological control of Wadati-Benioff zone seismicity [PDF]

open access: yes, 1988
Intermediate and deep focus earthquakes in Wadati-Benioff zones are thought to occur in the cold interiors of downgoing slabs which are significantly stronger than the warmer mantle.
Brodholt, J, Stein, S
core   +1 more source

Terrane Collision‐Induced Subduction Initiation: Mode Selection and Implications for Western Pacific Subduction System

open access: yesGeochemistry, Geophysics, Geosystems
In the regime of plate tectonics, the subduction of an oceanic plate generally terminates with the collision and accretion of continental terranes. Then, a new subduction zone may form in the neighboring oceanic plates, which is defined as the terrane ...
Fengyuan Cui, Zhong‐Hai Li
doaj   +1 more source

Mass wasting at the base of the South central Chilean continental margin: the Reloca Slide [PDF]

open access: yes, 2009
Offshore south central Chile (35° S–42° S), the morphology of the lowermost continental slope and trench floor witnesses a voluminous submarine mass-wasting event.
Behrmann, Jan Hinrich   +4 more
core   +1 more source

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