Results 81 to 90 of about 45,915 (265)

Nonvolcanic tremor observed in the Mexican subduction zone [PDF]

, 2008
Nonvolcanic tremor (NVT) activity is revealed as episodes of higher spectral amplitude at 1–8 Hz in daily spectrograms from the continuous seismological records in Guerrero, Mexico.
Clayton, Robert W., Iglesias, Arturo, Kostoglodov, Vladimir, Mikumo, Takeshi, Payero, Juan S., Pérez-Campos, Xyoli, Shapiro, Nikolai   +6 more
core   +3 more sources

Restoring the Missing Late Cretaceous Arc of Iran

Geochemistry, Geophysics, Geosystems
Persistent arc magmatism archives fluid transport and mantle partial melting in subduction zones. However, arc magmatism often exhibits different magmatic records along the strike, as seen in the Tethyan orogenic belt.
Yiyang Lei, Yang Chu, Mark B. Allen, Wei Lin, Bo Wan, Ling Chen, Morteza Talebian, Guangyao Xin, Tanjie Liu, Yilin Guo, Lin Guo   +10 more
doaj   +1 more source

Identification and tectonic implications of a tear in the South American plate at the southern end of the Lesser Antilles

Geochemistry, Geophysics, Geosystems, 2008
In the southeast corner of the Caribbean, westward subduction of (Atlantic) oceanic South America beneath the Lesser Antilles transitions to east‐west transform motion between continental South America and the Caribbean plate.
S. A. Clark, M. Sobiesiak, C. A. Zelt, M. B. Magnani, M. S. Miller, M. J. Bezada, A. Levander   +6 more
doaj   +1 more source

Breakup Without Borders: How Continents Speed Up and Slow Down During Rifting

Geophysical Research Letters, 2019
Relative plate motions during continental rifting result from the interplay of local with far‐field forces. Here we study the dynamics of rifting and breakup using large‐scale numerical simulations of mantle convection with self‐consistent evolution of ...
Martina M. Ulvrova, Sascha Brune, Simon Williams   +2 more
doaj   +1 more source

Wedge‐Shaped Southern Indian Continental Margin Without Proper Weakness Hinders Subduction Initiation

Geochemistry, Geophysics, Geosystems, 2022
The closure of a subduction zone with continental terrane collision and accretion is generally thought to be followed by the initiation of a new subduction zone in the neighboring oceanic plate, which is suggested to happen repeatedly during the ...
Xinyi Zhong, Zhong‐Hai Li
doaj   +1 more source

Emergence of modern-style continental subduction modulated by rifted margin-subduction feedback

, 2023
Abstract Modern-style continental subduction is the main carrier of rifted margins to mantle depths (> 90 km) where ultra-high pressure (UHP) metamorphism above coesite stability is attained[1,2]. An open question is why exhumed UHP rocks, a key feature of modern-style continental orogens, only appeared and became common late in Earth’s ...
Carlos Ganade, Nicolas Riel, Gianreto Manatschal, Lucas Tesser, Daniela Rubatto, Joerg Hermann, Roberto Weinberg, Pierre Lanari, Boris Kaus   +8 more
openaire   +1 more source

The consequences of crustal melting in continental subduction [PDF]

Lithosphere, 2009
Orogens grow in part by thrusting and burial of continental crust, in some cases, into the mantle by continental subduction. Deeply buried continental crust may partially melt during ascent, adding magma to the overlying continental crust, creating a continental plateau, and accounting for the large melt volumes observed in modern and ancient orogens ...
Donna L. Whitney, Christian Teyssier, Patrice F. Rey   +2 more
openaire   +1 more source

Mesozoic-Cenozoic mafic magmatism in Sanandaj-Sirjan Zone, Zagros Orogen (Western Iran): geochemical and isotopic inferences from Middle Jurassic and Late Eocene gabbros [PDF]

, 2017
One of the consequences of Neo-Tethys ocean subduction beneath the Central Iranian Micro-continent (CIMC) is the development of rare gabbroic intrusions in the Malayer-Boroujerd Plutonic Complex (MBPC) located in the Sanandaj-Sirjan Zone (SaSZ) of the ...
Deevsalar, Reza, Ghaderi, Majid, Hoskin, P.W.O., Lee, Hao Yang, Murata, Mamoru, Neill, Iain, Oshiro, Shoma, Shinjo, Ryuichi, Wang, Kuo-Lung   +8 more
core   +1 more source

A multiphase seismic investigation of the shallow subduction zone, southern North Island, New Zealand [PDF]

, 2001
The shallow structure of the Hikurangi margin, in particular the interface between the Australian Plate and the subducting Pacific Plate, is investigated using the traveltimes of direct and converted seismic phases from local earthquakes.
Aki, Ansell, Ansell, Anya M. Reading, Bannister, Barnes, Barnes, Bradshaw, Brisbourne, Chanier, David Gubbins, Davy, de Boor, Eberhart-Phillips, Eberhart-Phillips, Franklin, Gledhill, Gubbins, Helffrich, Helffrich, Iidaka, Lancaster, Lodge, Luyendyk, Mao, Marson-Pidgeon, Powell, Reading, Robinson, Samson, Smith, Smith, Smith, Spencer, Stuart, Walcott, Weijian Mao, Wessel, Wood   +38 more
core   +1 more source

Sulfur loss from subducted altered oceanic crust and implications for mantle oxidation [PDF]

, 2020
© The Author(s), [year]. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Walters, J. B., Cruz-Uribe, A. M., & Marschall, H. R.
Cruz‐Uribe, Alicia M., Marschall, Horst R., Walters, Jesse B.   +2 more
core   +1 more source