Results 1 to 10 of about 65,247 (280)

Reawakening of large earthquakes in south central Chile: The 2016 Mw 7.6 Chiloé event

Geophysical Research Letters, 2017
On 25 December 2016, the Mw 7.6 Chiloé earthquake broke a plate boundary asperity in south central Chile near the center of the rupture zone of the Mw 9.5 Valdivia earthquake of 1960. To gain insight on decadal‐scale deformation trends and their relation
S. Ruiz, M. Moreno, D. Melnick, F. delCampo, P. Poli, J. C. Baez, F. Leyton, R. Madariaga   +7 more
doaj   +1 more source

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

Geophysical 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, Dmitry I. Frolov, Nikolay F. Vasilenko, Jeffrey T. Freymueller, Grigory M. Steblov, Göran Ekström, Nikolay N. Titkov, Alexandr S. Prytkov   +7 more
doaj   +1 more source

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

Geophysical 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, T. Kanzow, F. Colas, V. Echevin, G. Krahmann, A. Engel   +5 more
doaj   +1 more source

Onset of double subduction controls plate motion reorganisation

Nature 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

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

Communications 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, Daniel Pastor–Galán, Matthijs A. Smit, Laicheng Miao, Miao Dong, Fuqin Zhang, Dorjgochoo Sanchir, Ariuntsetseg Ganbat, Chenghao Liu, Ye Luo, Shun Li   +10 more
doaj   +1 more source

Tomographic Imaging of Slab Segmentation and Deformation in the Greater Antilles

Geochemistry, 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, Meghan S. Miller, Robert W. Porritt   +2 more
doaj   +1 more source

Deformation and Fault Propagation at the Lateral Termination of a Subduction Zone: The Alfeo Fault System in the Calabrian Arc, Southern Italy

Frontiers in Earth Science, 2020
The Calabrian Arc subduction, southern Italy, is a critical structural element in the geodynamic evolution of the central Mediterranean basin. It is a narrow, northwest-dipping slab bordered to the southwest by the Alfeo Fault System (AFS) and to the ...
Francesco Emanuele Maesano, Mara Monica Tiberti, Roberto Basili   +2 more
doaj   +1 more source

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

Geochemistry, 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)

Journal 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, Mansour Ghorbani, Vahid Ahadnejad   +2 more
doaj   +1 more source

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

Geosciences, 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