Tectonic evolution of the upper allochthon of the Órdenes complex (northwestern Iberian Massif): Structural constraints to a polyorogenic peri-Gondwanan terrane

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dc.book.titleThe Evolution of the Rheic Ocean: From Avalonian-Cadomian Active Margin to Alleghenian-Variscan Collision
dc.contributor.authorGómez Barreiro, Juan
dc.contributor.authorMartínez Catalán, José Ramón
dc.contributor.authorArenas Martín, Ricardo
dc.contributor.authorCastiñeiras García, Pedro
dc.contributor.authorAbati Gómez, Jacobo
dc.contributor.authorDíaz García, Florentino
dc.contributor.authorWijbrans, Jan R.
dc.contributor.editorLinnemann, Ulf
dc.contributor.editorNance, R. Damian
dc.contributor.editorKraft, Petr
dc.contributor.editorZulaud, Gernold
dc.date.accessioned2023-06-20T13:49:30Z
dc.date.available2023-06-20T13:49:30Z
dc.date.issued2007-01-01
dc.description.abstractThe upper allochthon of northwest Iberia represents the most exotic terrane of this part of the European Variscan belt. Recent advances in the metamorphic petrology, structural geology, and geochronology of the upper allochthon in the Órdenes complex are integrated into a synthesis of its tectonic evolution, constraining the main tectonothermal events. Important aspects of this synthesis are (1) the interpretation of Cambro-Ordovician magmatism and earliest metamorphic event, as the result of drifting of a peri-Gondwanan terrane; (2) the subsequent shortening and crustal thickening of the terrane related to its subduction and accretion to Laurussia; (3) a younger cycle of shortening and extension resulting from convergence between Laurussia and Gondwana; and (4) the emplacement of this exotic terrane as the upper allochthon, together with underlying ophiolitic and basal allochthons, during the Laurussia-Gondwana collision. Implications derived from the well-established tectonothermal sequence are discussed in the context of Paleozoic paleogeography and geodynamics. The evolution of this part of the belt is related first to the closure of the Tornquist Ocean, and later to that of the eastern branch of the Rheic Ocean. Furthermore, the relative paleopositions of the upper allochthon and the Iberian autochthon in northern Gondwana are discussed.
dc.description.departmentDepto. de Mineralogía y Petrología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipDirección General de Investigación Científica y Técnica
dc.description.sponsorshipDirección General de Educacion Superior e Investigación Científica
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/69951
dc.identifier.doi10.1130/SPE423
dc.identifier.isbn9780813724232
dc.identifier.officialurlhttps://pubs.geoscienceworld.org/gsa/books/book/591/The-Evolution-of-the-Rheic-Ocean-From-Avalonian
dc.identifier.urihttps://hdl.handle.net/20.500.14352/53786
dc.issue.number423
dc.language.isoeng
dc.page.final332
dc.page.initial315
dc.publisherGeological Society of America
dc.relation.ispartofseriesSpecial paper - Geological Society of America
dc.relation.projectIDPB97-0234-C02
dc.relation.projectIDBTE2001- 0963-C02
dc.relation.projectIDCGL2004-04306-CO2/BTE
dc.rights.accessRightsopen access
dc.subject.cdu551.4
dc.subject.cdu551.2
dc.subject.keywordTectonics
dc.subject.keywordPolyorogenic terrane
dc.subject.keywordVariscan orogeny
dc.subject.keywordGondwana
dc.subject.ucmGeodinámica
dc.subject.unesco2507 Geofísica
dc.titleTectonic evolution of the upper allochthon of the Órdenes complex (northwestern Iberian Massif): Structural constraints to a polyorogenic peri-Gondwanan terrane
dc.typebook part
dspace.entity.typePublication
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relation.isAuthorOfPublication590ee677-786b-4d34-b10b-30b65d1a8d35
relation.isAuthorOfPublicationb2d76e4a-9656-45d4-883f-6027fdd52d29
relation.isAuthorOfPublication6cb07e41-d685-424f-9bd7-48e62c3dc87f
relation.isAuthorOfPublication.latestForDiscoverya1923245-aea2-4606-b726-d329291980fc
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