dc.contributor.author | Llana Fúnez, Sergio | |
dc.contributor.author | Marcos Vallaure, Alberto | |
dc.contributor.author | Galán, Gumer | |
dc.contributor.author | Fernández Rodríguez, Francisco José | |
dc.date.accessioned | 2024-07-29T10:42:35Z | |
dc.date.available | 2024-07-29T10:42:35Z | |
dc.date.issued | 2004-05 | |
dc.identifier.citation | Geology, 32(5), p. 453–456 (2004); doi:10.1130/G20280.1 | |
dc.identifier.uri | https://hdl.handle.net/10651/73962 | |
dc.description.abstract | The upper tectonic unit of the Cabo Ortegal Complex (northwest Spain) comprises an
ordered rock sequence of ultramafic and mafic rocks and quartzofeldspathic gneisses. The
entire assembly forms part of a transitional mafic crust. In an early Paleozoic subduction
episode, most of this crust was metamorphosed at eclogite facies and high-pressure granulite
facies conditions. Field and microstructural observations suggest that this metamorphism
occurred simultaneously with deformation, producing a pervasive tectonic fabric
that developed under a strain regime of bulk coaxial deformation. Downdip extension of
the crust in the subduction zone is inferred to have thinned the rock sequence. The relatively
high pressures and high temperatures (770–900 8C and .1.2–1.7 GPa) during
deformation at peak conditions, in addition to the significant thinning of the units, suggest
a tectonic setting of ductile slab breakoff as the cause of the intense and widespread
deformation. | spa |
dc.description.sponsorship | Llana-Fu´nez was supported by a postdoctoral fel-
lowship at the University of Manchester funded by
the European Commission under the Marie Curie
Fellowship Program. Field expenses were funded
from research project DGE95-PB1052 of the Direc-
ción General de Investigación Científica y Técnica,
Spain. | spa |
dc.format.extent | p. 453-456 | spa |
dc.language.iso | eng | spa |
dc.relation.ispartof | Geology, 32(5) | spa |
dc.rights | © Geological Society of America | |
dc.subject | slab breakoff, eclogite facies deformation, subduction, high pressure, Cabo Ortegal | spa |
dc.title | Tectonic thinning of a crust slice at high pressure and high temperature by ductile-slab breakoff (Cabo Ortegal Complex, northwest Spain) | spa |
dc.type | journal article | spa |
dc.identifier.doi | 10.1130/G20280.1 | |
dc.relation.projectID | DGE95-PB1052 | |
dc.relation.publisherversion | https://doi.org/10.1130/G20280.1 | |