Results 71 to 80 of about 1,920 (208)

Anomalous Sediment Consolidation and Alteration From Buried Incoming Plate Seamounts Along the Cascadia Margin

Geochemistry, Geophysics, Geosystems
Oceanic plate seamounts are believed to play an important role in megathrust rupture at subduction zones, although consistent relationships between subducting seamounts and plate interface seismicity patterns are not found.
Michelle K. Lee, Suzanne M. Carbotte, Shuoshuo Han, Brandon Shuck, Pinar Gurun, Brian Boston, Mladen Nedimovic, Harold Tobin, Ben Norvell, Glenn Spinelli   +9 more
doaj   +1 more source

Objective detection of long-term slow slip events along the Nankai Trough using GNSS data (1996–2016)

Earth, Planets and Space, 2017
This paper presents a method for objective detection of long-term slow slip events with durations on the order of years, on the plate boundary along the Nankai Trough, relying on global navigation satellite system daily coordinate data.
Akio Kobayashi
doaj   +1 more source

Deformation history of the eclogite- and jadeitite-bearing mélange from North Motagua Fault Zone, Guatemala: insights in the processes of a fossil subduction channel [PDF]

, 2009
In Guatemala, along the northern side of the Motagua Valley, a me ́lange consisting of blocks of eclogite and jadeitite set in a metaserpentinitic and metasedimentary matrix crops out.
PANDOLFI, LUCA, PRINCIPI G, MARRONI, MICHELE, MENEGHINI, FRANCESCA, MALASOMA A   +4 more
core   +1 more source

Long-term slow slip events along the Nankai trough subduction zone after the 2011 Tohoku earthquake in Japan

Earth, Planets and Space, 2017
The global navigation satellite system (GNSS) network in Japan has detected transient crustal deformation in regions along the Nankai trough subduction zone in southwest Japan from approximately 2013, after the 2011 Tohoku earthquake. Using the GNSS data,
Shinzaburo Ozawa
doaj   +1 more source

Tectonic evolution of a continental subduction‐exhumation channel: Variscan structure of the basal allochthonous units in NW Spain [PDF]

, 2011
A regional study starting from detailed geological mapping has been carried out in the Malpica-Tui Complex of Galicia in NW Spain. The complex is formed by two units representing pieces of the external edge of Gondwana, subducted and exhumed during the ...
Martínez Catalán, J. R., Díez Fernández, Rubén, Rubén Díez Fernández, Martínez Catalán, José Ramón, Abati Gómez, Jacobo, Arenas, Ricardo, Abati, Jacobo, Arenas Martín, Ricardo, Jacobo Abati Gómez, José Ramón Martínez Catalán, Ricardo Arenas Martín   +10 more
core   +1 more source

Deep subduction and rapid exhumation: role of crustal strength and strain weakening in continental subduction and ultrahigh-pressure rock exhumation

, 2008
The exhumation of crustal ultra-high-pressure (UHP) material depends on temporal and spatial variations in its detachment within the subduction channel.
Christopher Beaumont, Rebecca A. Jamieson, Warren, Clare J., Clare J. Warren, Jamieson, Rebecca A., Beaumont, Christopher   +5 more
core   +1 more source

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki, Michael E. Jackson, Glen S. Mattioli, David J. Mencin, Karl Feaux, Donna J. Charlevoix   +5 more
wiley   +1 more source

Geochemistry and Geochronology of the Guajira Eclogites, northern Colombia: evidence of a metamorphosed primitive Cretaceous Caribbean Island-arc

Geologica Acta, 2011
The chemical composition of eclogites, found as boulders in a Tertiary conglomerate from the Guajira Peninsula, Colombia suggests that these rocks are mainly metamorphosed basaltic andesites.
M. WEBER, A. CARDONA, V. VALENCIA, U. ALTENBERGER, M. LÓPEZ MARTÍNEZ, M. TOBÓN, S. ZAPATA, G. ZAPATA, A.E. CONCHA   +8 more
doaj  

Commentary: Intense Upper Mantle Hydration of the Pacific Plate Beneath the Southern Mariana Trench

Geophysical Research Letters
To date, estimates of mantle serpentinization in trench‐outer rise regions have largely relied on Vp models from controlled‐source seismic experiments. A recent study by He et al.
Eduardo Contreras‐Reyes
doaj   +1 more source

New thermal constraints on a shallow fossil subduction channel from the Northern Apennines of Italy

, 2009
Here we present new thermal constraints (with special regard to vitrinite reflectance, Illite percentage in Illite- Smectite mixed-layers and Kübler Index) derived from both XRD analysis of clay and optical analysis of organic matter dispersed in ...
Corrado S., Aldega L., Vannucchi P., CARLINI M, CORRADO S, REMITTI F, REMITTI, Francesca, BETTELLI, Giuseppe, BETTELLI G., ALDEGA, LUCA, VANNUCCHI P, Carlini M.   +11 more
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