Results 51 to 60 of about 7,715 (221)

Plate coupling and strain in the far western Aleutian arc modeled from GPS data

open access: yesGeophysical Research Letters, 2017
The Aleutian and Kuril‐Kamchatka arcs meet at a triple junction of the Pacific (PAC), Bering (BER), and North American (NAM) plates. We invert GPS observations from the westernmost Aleutian (Komandorsky) Islands and Kamchatka for the fault locking depth ...
Mikhail G. Kogan   +7 more
doaj   +1 more source

The secret to starting subduction is ... subduction

open access: yes, 2020
Caroline Eakin, ANU The Earth's biggest earthquakes and most explosive volcanoes occur at subduction zones" where a tectonic plate (the seafloor itself) sinks bank into the Earth's interior. We've been able to compile 100 million years of existing evidence for Subduction Zone Initiation (SZI).
openaire   +1 more source

Onset of double subduction controls plate motion reorganisation

open access: yesNature Communications
Face-to-face double subduction systems, in which two oceanic plates subduct toward each other, are essential elements of plate tectonics. Two subduction zones in such systems are typically uneven in age and their spatially and temporally variable ...
Kuidi Zhang, Jie Liao, Taras Gerya
doaj   +1 more source

Do submesoscale frontal processes ventilate the oxygen minimum zone off Peru?

open access: yesGeophysical Research Letters, 2016
The Peruvian upwelling system encompasses the most intense and shallowest oxygen minimum zone (OMZ) in the ocean. This system shows pronounced submesoscale activity like filaments and fronts.
S. Thomsen   +5 more
doaj   +1 more source

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

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

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

Geochemical studies, magmatic evolution, microstructures and replacement mechanisms in Jebale-Barez granitoid Complex (East and Southeast Jiroft)

open access: yesJournal of Economic Geology, 2017
Introduction The Jebale-Barez Plutonic Complex (JBPC) is composed of many intrusive bodies and is located in the southeastern province of Kerman on the longitude of the 57◦ 45 ' east to 58◦ 00' and Northern latitudes 28◦ 30' to 29◦ 00'.
Jamal Rasouli   +2 more
doaj   +1 more source

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

open access: yesGeosciences, 2017
This paper gives an overview of the large-scale tectonic styles encountered in orogens worldwide. Thin-skinned and thick-skinned tectonics represent two end member styles recognized in mountain ranges.
O. Adrian Pfiffner
doaj   +1 more source

Multiple Slabs and Complex Mantle Flows in the Molucca Sea Subduction Zone

open access: yesGeochemistry, Geophysics, Geosystems
The Molucca Sea subduction zone is unique for its active divergent double‐subducted slab located in the north of the Java and Banda subduction zones. The spatial proximity of these subduction zones would cause a complex mantle flow field.
Tianmeng Yuan   +4 more
doaj   +1 more source

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