Results 31 to 40 of about 2,100,958 (324)

Barium content of Archaean continental crust reveals the onset of subduction was not global

Nature Communications, 2022
Only subduction zone can produce Ba-rich TTG, representing a proxy for the onset of subduction. Statistical increases in Ba contents of Archaean TTGs reveal the diachronous onset of subduction from regional at 4 Ga to globally complete after 2.7 ...
Guangyu Huang, Ross N. Mitchell, Richard M. Palin, Christopher J. Spencer, Jinghui Guo   +4 more
doaj   +1 more source

Juan de Fuca subduction zone from a mixture of tomography and waveform modeling [PDF]

, 2012
Seismic tomography images of the upper mantle structures beneath the Pacific Northwestern United States display a maze of high-velocity anomalies, many of which produce distorted waveforms evident in the USArray observations indicative of the Juan de ...
Chu, Risheng, Helmberger, Don V., Schmandt, Brandon   +2 more
core   +1 more source

Numerical models of slab migration in continental collision zones [PDF]

Solid Earth, 2012
Continental collision is an intrinsic feature of plate tectonics. The closure of an oceanic basin leads to the onset of subduction of buoyant continental material, which slows down and eventually stops the subduction process.
V. Magni, J. van Hunen, F. Funiciello, C. Faccenna   +3 more
doaj   +1 more source

Neoproterozoic subduction along the Ailaoshan zone, South China : geochronological and geochemical evidence from amphibolite [PDF]

, 2014
This study was supported by China Natural Science Foundation (41190073 and 41372198), National Basic Research Program of China (2014CB440901) and Natural Environment Research Council (grant NE/J021822/1).Lenses of amphibolites occur along the Ailaoshan ...
Cai, Yongfeng, Cawood, Peter A., Fan, Weiming, Liu, Huichuan, Wang, Yuejun, Xing, Xiaowan, Zhang, Yuzhi   +6 more
core   +1 more source

What Controls Maximum Magnitudes of Giant Subduction Earthquakes?

Geochemistry, 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, Stephan V. Sobolev   +1 more
doaj   +1 more source

Thermal structure of continental subduction zone: high temperature caused by the removal of the preceding oceanic slab

Earth and Planetary Physics, 2021
The thermal structure of the continental subduction zone can be deduced from high-pressure and ultra-high-pressure rock samples or numerical simulation. However, petrological data indicate that the temperature of subducted continental plates is generally
Ting Luo, Wei Leng
doaj   +1 more source

Heterogeneous coupling of the Sumatran megathrust constrained by geodetic and paleogeodetic measurements [PDF]

, 2008
Geodetic and paleogeodetic measurements of interseismic strain above the Sumatran portion of the Sunda subduction zone reveal a heterogeneous pattern of coupling.
Abercrombie, Altamimi, Ammon, Aoki, Banerjee, Bassin, Bellier, Blanpied, Blanpied, Bock, Briggs, Bürgmann, Cande, Cazenave, Chlieh, Chlieh, Church, Cross, D. H. Natawidjaja, Diament, Dmowska, Dmowska, Dragert, Dragert, Engdahl, Fauzi, Fitch, Fletcher, Fournier, Freymueller, Genrich, Gradstein, Grevemeyer, Gudmundsson, Heki, Herring, Hirose, Hsu, Hutton, Hyndman, Hyndman, J. P. Avouac, Ji, John Galetzka, K. Sieh, Kanamori, Kanamori, King, Konca, Kositsky, Lay, Lowry, M. Chlieh, Mazzotti, McCaffrey, McCaffrey, Michel, Natawidjaja, Natawidjaja, Natawidjaja, Newcomb, Nikolaidis, Okada, Oleskevich, Pacheco, Park, Prawirodirdjo, Prawirodirdjo, Pritchard, Reinen, Rhie, Rivera, Royden, Ruff, Savage, Shimazaki, Sieh, Sieh, Simoes, Simons, Simons, Socquet, Song, Subarya, Thatcher, Tichelaar, Turcotte, Vergne, Vigny, Wallace, Wallace, Wang, Wang, Wells, Wesnousky, Yamanaka, Zachariasen, Zachariasen, Zweck   +98 more
core   +3 more sources

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

Sporadic low-velocity volumes spatially correlate with shallow very low frequency earthquake clusters

Nature Communications, 2017
In the Nankai subduction zone a low-velocity zone (LVZ) has been detected. Here, the authors present shear wave velocity profiles to show that low frequency earthquakes correlate with the distribution of the LVZ in the Nankai subduction zone.
Takashi Tonegawa, Eiichiro Araki, Toshinori Kimura, Takeshi Nakamura, Masaru Nakano, Kensuke Suzuki   +5 more
doaj   +1 more source

A Comparative Study of the Sumatran Subduction-Zone Earthquakes of 1935 and 1984 [PDF]

, 2002
A M_s 7.7 earthquake struck the western, equatorial coast of Sumatra in December 1935. It was the largest event in the region since the two devastating giant earthquakes of 1833 and 1861.
Helmberger, Don, Natawidjaja, Danny, Rivera, Luis, Sieh, Kerry   +3 more
core   +1 more source