Provenance analysis of the Paleozoic sequences of the northern Gondwana margin in NW Iberia: Passive margin to Variscan collision and orocline development

The Cantabrian Zone of NW Iberia preserves a voluminous, almost continuous, sedimentary sequence that ranges from Neoproterozoic to Early Permian in age. Its tectonic setting is controversial and recent hypotheses include (i) passive margin deposition along the northern margin of Gondwana or (ii) an...

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Autores: Pastor-Galán, Daniel, Gutiérrez-Alonso, Gabriel, Murphy, J. Brendan, Fernández-Suárez, Javier, Hofmann, Mandy, Linnemann, Ulf
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/345099
Acceso en línea:http://hdl.handle.net/10261/345099
https://api.elsevier.com/content/abstract/scopus_id/84873159702
Access Level:acceso abierto
Palabra clave:Detrital zircon geochronology | Lithospheric delamination | NW Iberia | Oroclinal buckling | Passive margin
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spelling Provenance analysis of the Paleozoic sequences of the northern Gondwana margin in NW Iberia: Passive margin to Variscan collision and orocline developmentPastor-Galán, DanielGutiérrez-Alonso, GabrielMurphy, J. BrendanFernández-Suárez, JavierHofmann, MandyLinnemann, UlfDetrital zircon geochronology | Lithospheric delamination | NW Iberia | Oroclinal buckling | Passive marginThe Cantabrian Zone of NW Iberia preserves a voluminous, almost continuous, sedimentary sequence that ranges from Neoproterozoic to Early Permian in age. Its tectonic setting is controversial and recent hypotheses include (i) passive margin deposition along the northern margin of Gondwana or (ii) an active continental margin or (iii) a drifting ribbon continent. In this paper we present detrital zircon U-Pb laser ablation age data from 13 samples taken in detrital rocks from the Cantabrian Zone sequence ranging from Early Silurian to Early Permian in depositional age. The obtained results, together with previously published detrital zircon ages from Ediacaran-Ordovician strata, allow a comprehensive analysis of changing provenance through time. Collectively, these data indicate that this portion of Iberia was part of the passive margin of Gondwana at least from Ordovician to Late Devonian times. Zircon populations in all samples show strong similarities with the Sahara Craton and with zircons found in Libya, suggesting that NW Iberia occupied a paleoposition close to those regions of present-day northern Africa during this time interval. Changes in provenance in the Late Devonian are attributed to the onset of the collision between Gondwana and Laurussia.Additionally, the Middle Carboniferous to Permian samples record populations consistent with the recycling of older sedimentary sequences and exhumation of the igneous rocks formed before and during the Variscan orogeny. Late-Devonian to Permian samples yield zircon populations that reflect topographic changes produced during the Variscan orogeny and development of the lithospheric scale oroclinal buckling. © 2012 International Association for Gondwana Research.We would like to thank F. Pereira and D. Avigad for their constructive reviews that helped to improve this paper and J.R. Colmenero for his help taking samples. This is a contribution to IGCP 574 and IGCP 597. This work's financial support was supplied by Research Project ODRE II (“Oroclines and Delamination: Relations and Effects”) No. CGL2009-1367, from the Spanish Ministry of Science and Innovation and N.S.E.R.C., Canada. JFS wishes to acknowledge financial support from project CONSOLIDER CGL2007-65338-C02-01/BTE by the Spanish Ministry of Science and Technology.Peer reviewedElsevierMinisterio de Ciencia e Innovación (España)Pastor-Galán, Daniel [0000-0002-0226-2739]Gutiérrez-Alonso, Gabriel [0000-0002-4370-4580]Murphy, J. Brendan [0000-0003-2269-1976]Fernández-Suárez, Javier [0000-0002-7429-2865]Hofmann, MandyLinnemann, Ulf [0000-0003-0970-0233]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/345099https://api.elsevier.com/content/abstract/scopus_id/84873159702reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#CGL2007-65338-C02-01/BTEGondwana ResearchSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3450992026-05-22T06:33:51Z
dc.title.none.fl_str_mv Provenance analysis of the Paleozoic sequences of the northern Gondwana margin in NW Iberia: Passive margin to Variscan collision and orocline development
title Provenance analysis of the Paleozoic sequences of the northern Gondwana margin in NW Iberia: Passive margin to Variscan collision and orocline development
spellingShingle Provenance analysis of the Paleozoic sequences of the northern Gondwana margin in NW Iberia: Passive margin to Variscan collision and orocline development
Pastor-Galán, Daniel
Detrital zircon geochronology | Lithospheric delamination | NW Iberia | Oroclinal buckling | Passive margin
title_short Provenance analysis of the Paleozoic sequences of the northern Gondwana margin in NW Iberia: Passive margin to Variscan collision and orocline development
title_full Provenance analysis of the Paleozoic sequences of the northern Gondwana margin in NW Iberia: Passive margin to Variscan collision and orocline development
title_fullStr Provenance analysis of the Paleozoic sequences of the northern Gondwana margin in NW Iberia: Passive margin to Variscan collision and orocline development
title_full_unstemmed Provenance analysis of the Paleozoic sequences of the northern Gondwana margin in NW Iberia: Passive margin to Variscan collision and orocline development
title_sort Provenance analysis of the Paleozoic sequences of the northern Gondwana margin in NW Iberia: Passive margin to Variscan collision and orocline development
dc.creator.none.fl_str_mv Pastor-Galán, Daniel
Gutiérrez-Alonso, Gabriel
Murphy, J. Brendan
Fernández-Suárez, Javier
Hofmann, Mandy
Linnemann, Ulf
author Pastor-Galán, Daniel
author_facet Pastor-Galán, Daniel
Gutiérrez-Alonso, Gabriel
Murphy, J. Brendan
Fernández-Suárez, Javier
Hofmann, Mandy
Linnemann, Ulf
author_role author
author2 Gutiérrez-Alonso, Gabriel
Murphy, J. Brendan
Fernández-Suárez, Javier
Hofmann, Mandy
Linnemann, Ulf
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Pastor-Galán, Daniel [0000-0002-0226-2739]
Gutiérrez-Alonso, Gabriel [0000-0002-4370-4580]
Murphy, J. Brendan [0000-0003-2269-1976]
Fernández-Suárez, Javier [0000-0002-7429-2865]
Hofmann, Mandy
Linnemann, Ulf [0000-0003-0970-0233]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Detrital zircon geochronology | Lithospheric delamination | NW Iberia | Oroclinal buckling | Passive margin
topic Detrital zircon geochronology | Lithospheric delamination | NW Iberia | Oroclinal buckling | Passive margin
description The Cantabrian Zone of NW Iberia preserves a voluminous, almost continuous, sedimentary sequence that ranges from Neoproterozoic to Early Permian in age. Its tectonic setting is controversial and recent hypotheses include (i) passive margin deposition along the northern margin of Gondwana or (ii) an active continental margin or (iii) a drifting ribbon continent. In this paper we present detrital zircon U-Pb laser ablation age data from 13 samples taken in detrital rocks from the Cantabrian Zone sequence ranging from Early Silurian to Early Permian in depositional age. The obtained results, together with previously published detrital zircon ages from Ediacaran-Ordovician strata, allow a comprehensive analysis of changing provenance through time. Collectively, these data indicate that this portion of Iberia was part of the passive margin of Gondwana at least from Ordovician to Late Devonian times. Zircon populations in all samples show strong similarities with the Sahara Craton and with zircons found in Libya, suggesting that NW Iberia occupied a paleoposition close to those regions of present-day northern Africa during this time interval. Changes in provenance in the Late Devonian are attributed to the onset of the collision between Gondwana and Laurussia.Additionally, the Middle Carboniferous to Permian samples record populations consistent with the recycling of older sedimentary sequences and exhumation of the igneous rocks formed before and during the Variscan orogeny. Late-Devonian to Permian samples yield zircon populations that reflect topographic changes produced during the Variscan orogeny and development of the lithospheric scale oroclinal buckling. © 2012 International Association for Gondwana Research.
publishDate 2013
dc.date.none.fl_str_mv 2013
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/345099
https://api.elsevier.com/content/abstract/scopus_id/84873159702
url http://hdl.handle.net/10261/345099
https://api.elsevier.com/content/abstract/scopus_id/84873159702
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
CGL2007-65338-C02-01/BTE
Gondwana Research
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
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