Results 41 to 50 of about 116,619 (259)

Plume‐Induced Subduction Initiation: Single‐Slab or Multi‐Slab Subduction? [PDF]

Geochemistry, Geophysics, Geosystems, 2020
AbstractInitiation of subduction following the impingement of a hot buoyant mantle plume is one of the few scenarios that allow breaking the lithosphere and recycling a stagnant lid without requiring any preexisting weak zones. Here, we investigate factors controlling the number and shape of retreating subducting slabs formed by plume‐lithosphere ...
Marzieh Baes, Stephan Sobolev, Taras Gerya, Sascha Brune   +3 more
openaire   +7 more sources

Complex anisotropy beneath the Peruvian flat slab from frequency-dependent, multiple-phase shear wave splitting analysis [PDF]

, 2013
Flat or shallow subduction is a relatively widespread global occurrence, but the dynamics remain poorly understood. In particular, the interaction between flat slabs and the surrounding mantle flow has yet to be studied in detail.
Long, Maureen D., Eakin, Caroline M.
core   +1 more source

Forearc ages reveal extensive short-lived and rapid seafloor spreading following subduction initiation

Earth and Planetary Science Letters, 2019
The Izu–Bonin–Mariana (IBM) forearc contains a record of a widespread and short-lived subduction initiation event in the early Eocene. We present new high-precision ages to determine the rates and length scales of ocean crust production following ...
M. Reagan, D. Heaton, M. Schmitz, J. Pearce, J. Shervais, A. Koppers   +5 more
semanticscholar   +1 more source

Melting of subducted sediments reconciles geophysical images of subduction zones

Nature Communications, 2021
AbstractSediments play a key role in subduction. They help control the chemistry of arc volcanoes and the location of seismic hazards. Here, we present a new model describing the fate of subducted sediments that explains magnetotelluric models of subduction zones, which commonly show an enigmatic conductive anomaly at the trenchward side of volcanic ...
M. W. Förster, K. Selway
openaire   +3 more sources

Slab pull, slab weakening, and their relation to deep intra-slab seismicity [PDF]

, 2005
Subduction zone seismicity is highly variable. Great earthquakes occur at few subduction zones around the world, with significant variation in size and frequency of deep events. Interactions between overriding and subducting plates and slab pull strength
Lithgow‐bertelloni, Carolina, Carolina Lithgow-bertelloni, Bilek, Susan L., Bilek, SL, Conrad, CP, Susan L. Bilek, Clinton P. Conrad, Lithgow-Bertelloni, C, Conrad, Clinton P.   +8 more
core   +1 more source

A record of spontaneous subduction initiation in the Izu–Bonin–Mariana arc [PDF]

, 2015
The initiation of tectonic plate subduction into the mantle is poorly understood. If subduction is induced by the push of a distant mid-ocean ridge or subducted slab pull, we expect compression and uplift of the overriding plate. In contrast, spontaneous
Arculus, Richard J., Sena, Clara, Gurnis, M., Ivan P. Savov, Loudin, L.C., Kusano, Y., van der Land, C., Bogus, K.A., Jiang, F, Gene M. Yogodzinski, Hamada, Morihisa, Li, He, Loudin, LC, Kender, Sev, Drab, Laureen, Marco Maffione, Meffre, Sebastién, Savov, Ivan P., Hickey-Vargas, Rosemary, Yuki Kusano, do Monte Guerra, R, Neuhaus, Martin, Guerra, RDM, Alexandre N. Bandini-Maeder, Ishizuka, Osamu, Richard J. Arculus, Mohammed H. Aljahdali, Maffione, M, Barth, A.P., Aljahdali, MH, Rosemary Hickey-Vargas, Bandini, A.N., Savov, IP, Hickey-Vargas, R, Marsaglia, K.M., Guerra, Rodrigo do Monte, McCarthy, A., Rodrigo do Monte Guerra, Kanayama, K, van der Land, C, Jiang, F., Maffione, M., Kender, S., Hickey-Vargas, R., Morihisa Hamada, Kara A. Bogus, Bogus, Kara A., Meffre, S., Zhang, Z., Zhang, Z, Zhang, Zhaohui, Tepley, Frank J., III, TFJ, Ishizuka, O, Kusano, Yuki, Anders McCarthy, Andrew P. Barth, Tepley III, F.J., Gurnis, M, Bogus, KA, Hamada, N., Meffre, S, Aljahdali, Mohammed H., Arculus, RJ, Kusano, Y, Morris, A., Zhaohui Zhang, Philipp A. Brandl, do Monte Guerra, R., Maffione, Marco; id_orcid, Brandl, PA, Neuhaus, M, Ishizuka, O., do Monte Guerra, Rodrigo, Lorne C. Loudin, Drab, L, Clara Sena, Frank J. Tepley III, Osamu Ishizuka, Yogodzinski, G.M., Hamada, M, Kyoko Kanayama, Brandl, Philipp A., He Li, Sev Kender, Bandini-Maeder, Alexandre N., Tepley, FJ, McCarthy, A, Sena, C, McCarthy, Anders, Martin Neuhaus, Gurnis, Michael, Kanayama, Kyoko, Kanayama, K., Barth, Andrew P., Jiang, Fuqing, Tepley III, Frank J., Mantle dynamics & theoretical geophysics, ERC-SINK: Subduction Initiation reconstructed from Neotethyan Kinematics, Maffione, Marco, Savov, I.P., Li, H, Kathleen M. Marsaglia, Yogodzinski, GM, Bandini-Maeder, AN, Marsaglia, KM, Michael Gurnis, Kender, S, van der Land, Cees, Laureen Drab, Arculus, R., Sena Da Silva, C.E., Morris, A, Sebastién Meffre, van, der Land C, Ma ffione, M, Yogodzinski, Gene M., Fuqing Jiang, Loudin, Lorne C., Cees van der Land, Morris, Antony, Barth, AP, Tepley III, FJ, Brandl, P.A., Marsaglia, Kathleen M., Li, H., Aljahdali, M.H., Tepley, Frank J., III, Antony Morris   +128 more
core   +1 more source

TerraceM-2: A Matlab® Interface for Mapping and Modeling Marine and Lacustrine Terraces

Frontiers in Earth Science, 2019
The morphology of marine and lacustrine terraces has been largely used to measure past sea- and lake-level positions and estimate vertical deformation in a wealth of studies focused on climate and tectonic processes.
Julius Jara-Muñoz, Julius Jara-Muñoz, Daniel Melnick, Daniel Melnick, Kevin Pedoja, Manfred R. Strecker   +5 more
doaj   +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

Recent Crustal Deformation in West-Central South America [PDF]

, 2003
I use interferometric synthetic aperture radar (InSAR) to create maps of crustal deformation along the coast and within the volcanic arc of central South America. I image deformation associated with six subduction zone earthquakes, four volcanic centers,
Pritchard, Matthew Earl
core   +1 more source

From subduction to collision in the northern Tibetan plateau : evidence from the early Silurian clastic rocks, northwestern China [PDF]

, 2012
The Qilian Orogen records early Paleozoic collisional suturing of the Qaidam Block and the Central Qilian Block to the North China Craton. The composition and U-Pb age of detrital zircons and the composition of Cr-spinels from the Early Silurian ...
Jianghai Yang, Peter A. Cawood, Yuansheng Du, Yajun Xu, Yang, Jianghai, Xu, Yajun, Cawood, Peter A., Du, Yuansheng   +7 more
core   +1 more source