Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain)

Martínez Catalán, José Ramón; Arenas Martín, Ricardo; Díaz García, Florentino; Rubio Pascual, Francisco J.; Abati Gómez, Jacobo; Marquínez, Jorge

Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain)

According to their metamorphic evolution, the Basal Units of the Galician Allochthonous Complexes are thought to represent a part of the margin of the Paleozoic Gondwana, subducted at the onset of the Variscan Orogeny. Variations in the P-T conditions of the first HP metamorphic event along the unit...

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Detalles Bibliográficos
Autores:	Martínez Catalán, José Ramón, Arenas Martín, Ricardo, Díaz García, Florentino, Rubio Pascual, Francisco J., Abati Gómez, Jacobo, Marquínez, Jorge
Tipo de recurso:	artículo
Fecha de publicación:	1996
País:	España
Institución:	Universidad Complutense de Madrid (UCM)
Repositorio:	Docta Complutense
Idioma:	inglés
OAI Identifier:	oai:docta.ucm.es:20.500.14352/58124
Acceso en línea:	https://hdl.handle.net/20.500.14352/58124
Access Level:	acceso abierto
Palabra clave:	551.2 Continental subduction Syn-orogenic extension High-pressure metamorphism Geodinámica 2507 Geofísica

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spelling	Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain) Martínez Catalán, José Ramón Arenas Martín, Ricardo Díaz García, Florentino Rubio Pascual, Francisco J. Abati Gómez, Jacobo Marquínez, Jorge 551.2 Continental subduction Syn-orogenic extension High-pressure metamorphism Geodinámica 2507 Geofísica According to their metamorphic evolution, the Basal Units of the Galician Allochthonous Complexes are thought to represent a part of the margin of the Paleozoic Gondwana, subducted at the onset of the Variscan Orogeny. Variations in the P-T conditions of the first HP metamorphic event along the units suggest an important westward component for the direction of sucduction. Subsequent underthrusting of more continental material blocked the subduction and triggered the ascent and exhumation of the Basal Units whereas the convergence continued. Compressional and extensional structures were synchronous or alternated in time and, together, induced the thinning and tapering of the orogenic wedge. The unroofing took place locally under an inverted temperature gradient, caused by a detachment which carried a part of the hot mantle wedge, above the subduction zone, over the subducted units. Sociedad Geológica de España https://hdl.handle.net/20.500.14352/58124
title	Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain)
spellingShingle	Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain) Martínez Catalán, José Ramón 551.2 Continental subduction Syn-orogenic extension High-pressure metamorphism Geodinámica 2507 Geofísica
title_short	Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain)
title_full	Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain)
title_fullStr	Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain)
title_full_unstemmed	Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain)
title_sort	Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain)
author	Martínez Catalán, José Ramón
author_facet	Martínez Catalán, José Ramón Arenas Martín, Ricardo Díaz García, Florentino Rubio Pascual, Francisco J. Abati Gómez, Jacobo Marquínez, Jorge
author_role	author
author2	Arenas Martín, Ricardo Díaz García, Florentino Rubio Pascual, Francisco J. Abati Gómez, Jacobo Marquínez, Jorge
author2_role	author author author author author
topic	551.2 Continental subduction Syn-orogenic extension High-pressure metamorphism Geodinámica 2507 Geofísica
topic_facet	551.2 Continental subduction Syn-orogenic extension High-pressure metamorphism Geodinámica 2507 Geofísica
description	According to their metamorphic evolution, the Basal Units of the Galician Allochthonous Complexes are thought to represent a part of the margin of the Paleozoic Gondwana, subducted at the onset of the Variscan Orogeny. Variations in the P-T conditions of the first HP metamorphic event along the units suggest an important westward component for the direction of sucduction. Subsequent underthrusting of more continental material blocked the subduction and triggered the ascent and exhumation of the Basal Units whereas the convergence continued. Compressional and extensional structures were synchronous or alternated in time and, together, induced the thinning and tapering of the orogenic wedge. The unroofing took place locally under an inverted temperature gradient, caused by a detachment which carried a part of the hot mantle wedge, above the subduction zone, over the subducted units.
publishDate	1996
format	article
url	https://hdl.handle.net/20.500.14352/58124
language	eng
eu_rights_str_mv	openAccess
publisher	Sociedad Geológica de España
institution	Universidad Complutense de Madrid (UCM)
collection	Docta Complutense
reponame_str	Docta Complutense
instname_str	Universidad Complutense de Madrid (UCM)
_version_	1878735048226635776
publishDateSort	1996
author_browse	Abati Gómez, Jacobo Arenas Martín, Ricardo Díaz García, Florentino Marquínez, Jorge Martínez Catalán, José Ramón Rubio Pascual, Francisco J.
publisherStr	Sociedad Geológica de España
score	6,9008884

Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain)

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