| Título: | Fabric Development in a Middle Devonian Intraoceanic SubductionRegime: The Careón Ophiolite (Northwest Spain) |
| Autores: | Gómez Barreiro, Juan ; Martínez Catalán, José Ramón ; Prior, D. ; Wenk, H.-R. ; Vogel, S. ; Díaz García, Florentino ; Arenas Martín, Ricardo ; Sánchez Martínez, Sonia ; Lonardelli, I. |
| Tipo de documento: | texto impreso |
| Editorial: | University of Chigaco Press, 2010 |
| Dimensiones: | application/pdf |
| Nota general: | info:eu-repo/semantics/openAccess |
| Idiomas: | |
| Palabras clave: | Estado = Publicado , Materia = Ciencias: Geología: Petrología , Tipo = Artículo |
| Resumen: |
A Middle Devonian suprasubduction zone ophiolite, the Careo´n Unit (northwest Spain), displays amphibolite-facies ductile deformation fabrics related to the onset of the Rheic Ocean closure. Two different fabrics, an early high-T foliation and a subsequent lower-T foliation, each of which characterized by distinct deformation mechanisms, have been identified in two distinct crustal-scale shear zones of the same ophiolitic thrust sheet. Combined quantitative texture analysis by electron backscattered diffraction and time-of-flight neutron diffraction, were carried out on the shear zones and correlated with micro- and macrostructural data. The results indicate that the regional lineation and shear zone kinematics (east-west, top-to-the-east) represent fabrics developed essentially during the intraoceanic subduction of the Rheic Ocean, and their orientation may be considered a reference vector for convergence models in this part of the Variscan belt. |
| En línea: | https://eprints.ucm.es/id/eprint/17407/1/649816.pdf |
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