Results 91 to 100 of about 1,920 (208)

Deformation processes and petrophysical properties of subduction channel rocks from the Eclogite Zone of the Tauern Window, Austria [PDF]

, 2015
The exhumation of high pressure metamorphic rocks at convergent plate margins can be explained by the existence of a so-called subduction channel, a shear zone of a few kilometer thickness above the downgoing lithospheric plate, in which material is ...
Keppler, Ruth
core  

Interplate patchiness and subduction-erosion mechanisms: Evidence from depth-migrated seismic images at the central Ecuador convergent margin

, 2015
4 pages, 4 figuresPrestack depth-migrated seismic lines provide accurate images of the convergent Ecuadorian margin, where the southern flank of the Carnegie Ridge subducts. The margin is fronted by a 5-7-km-wide compressional sediment prism. Beneath the
Ranero, César R., Sage, Françoise, Collot, Jean-Yves   +2 more
core   +1 more source

Trace-element geochemistry of transform-fault serpentinite in high-pressure subduction mélanges (eastern Cuba):implications for subduction initiation

, 2017
The Sierra del Convento and La Corea mélanges (eastern Cuba) are vestiges of a Cretaceous subduction channel in the Caribbean realm. Both mélanges contain blocks of oceanic crust and serpentinite subducted to high pressure within a serpentinite matrix ...
Lázaro, C., García-Casco, A., Proenza, J. A., A. García-Casco, J. Cárdenas-Párraga, Villanova-de-Benavent, Cristina, Harlow, G. E., Cárdenas-Párraga, J., Núñez Cambra, K., Cristina Villanova-de-Benavent, Blanco-Quintero, I. F., K. Núñez Cambra, J. A. Proenza, G. E. Harlow, C. Lázaro, I. F. Blanco-Quintero   +15 more
core   +1 more source

Toward a dynamic concept of the subduction channel at erosive convergent margins with implications for interplate material transfer

, 2012
Convergent plate boundaries accommodate intraplate displacement within a similar to 100-1000 m thick shear zone. Marine geophysicists typically define this zone, the subduction channel (SC), as the sedimentary layer between the downgoing oceanic crust ...
Vannucchi, P., Morgan, J.M., P. Vannucchi, J. Phipps Morgan, Morgan, J.P., REMITTI, Francesca, F. Sage, J. Y. Collot, Sage, F., Remitti, F., Collot, J.Y., Collot, Jean-Yves   +11 more
core   +1 more source

Fluid escape from subduction zones controlled by channel-forming reactive porosity

, 2017
Water within the oceanic lithosphere is returned to Earth's surface at subduction zones. Observations of metamorphosed veins preserved in exhumed slabs suggest that fluid can escape via channel networks.
Marco Scambelluri, Johannes C. Vrijmoed, Podladchikov, Yuri Y., John, Timm, Vrijmoed, Johannes C., Timm John, Plümper, Oliver, Yuri Y. Podladchikov, SCAMBELLURI, MARCO, Oliver Plümper   +9 more
core   +1 more source

The Role of Upper Mantle Forces in Post‐Subduction Tectonics: Plumelet and Active Rifting in the East Anatolian Plateau

Geochemistry, Geophysics, Geosystems
The spatiotemporal interaction of large‐ and regional‐scale upper mantle forces can prevail in collisional settings. To better understand the role of these forces on post‐subduction tectonics, we focus on mantle dynamics in the East Anatolian Plateau, a ...
Ebru Şengül Uluocak, Russell N. Pysklywec, Andrea Sembroni, Sascha Brune, Claudio Faccenna   +4 more
doaj   +1 more source

Dynamics in the Sesia HP terrane: Combined petrochronological and structural analysis [PDF]

, 2011
HP terranes dominated by continental crust represent the end result of a sequence of processes that operate at lithosphere scale, i.e. rifting, subduction/accretion, return flow/exhumation. To under¬stand the dynamics of the subduction channel in complex
M. Zucali, D. Regis, M. Engi, B. Cenki Tok, D. Rubatto, R. Compagnoni, J. Darling   +6 more
core  

The Slab‐Mantle Interaction in Continental Subduction Channels [PDF]

Acta Geologica Sinica - English Edition, 2015
openaire   +1 more source

The Protracted Evolution of a Plate Boundary: Eastern Cuba Block and Old Bahamas Channel

Geochemistry, Geophysics, Geosystems
The Eastern Cuban block has experienced a complex tectonic history characterized by plate interactions, resulting in a diverse array of geological features observable in the offshore sedimentary record.
A. Oliviera de Sá, S. Leroy, E. d’Acremont, S. Lafuerza, J.‐L. Granja‐Bruña, B. Moreno, V. Cabiativa Pico, J. Letouzey   +7 more
doaj   +1 more source

Tectono-metamorphic evolution of subduction channel serpentinites from South-Central Chile

, 2019
International audienceThis work provides the first comprehensive petrological and multi-scale structural investigation of a suite of ultramafic bodies and enclosing metasediments from the Late Paleozoic accretionary prism of South-Central Chile.
Garrido, Leonardo N.F., González Jiménez, José M., Monnier, Christophe, Padron Navarta, Jose Alberto, González-Jiménez, José, Garrido, Leonardo, Plissart, Gaelle, Diot, Hervé, Berger, Julien, Colas, Vanessa   +9 more
core   +1 more source