Geochemistry and Sm–Nd isotopic sources of Late Ediacaran siliciclastic series in the Ossa–Morena Complex: Iberian–Bohemian correlations

[EN] The Cadomian basement in central and southern Europe is composed by Ediacaran–Early Cambrian sequences that appear dismembered along the Variscan Orogen. These ancient series contain geochemical and isotopic keys related to their deposition in different basins located along the paleo margin of...

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Autores: Rojo-Pérez, E., Fuenlabrada, J.M., Linnemann, Ulf, Arenas, Ricardo, Sánchez Martínez, Sonia, Díez Fernández, Rubén, Martín Parra, L.M., Matas, Jerónimo, Andonaegui, P., Fernández Suárez, Javier
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/280943
Acceso en línea:http://hdl.handle.net/10261/280943
Access Level:acceso abierto
Palabra clave:Late Ediacaran series
Iberian massif
Bohemian massif
Nd isotope geochemistry
Variscan correlation
Peri-Gondwana paleogeography
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spelling Geochemistry and Sm–Nd isotopic sources of Late Ediacaran siliciclastic series in the Ossa–Morena Complex: Iberian–Bohemian correlationsRojo-Pérez, E.Fuenlabrada, J.M.Linnemann, UlfArenas, RicardoSánchez Martínez, SoniaDíez Fernández, RubénMartín Parra, L.M.Matas, JerónimoAndonaegui, P.Fernández Suárez, JavierLate Ediacaran seriesIberian massifBohemian massifNd isotope geochemistryVariscan correlationPeri-Gondwana paleogeography[EN] The Cadomian basement in central and southern Europe is composed by Ediacaran–Early Cambrian sequences that appear dismembered along the Variscan Orogen. These ancient series contain geochemical and isotopic keys related to their deposition in different basins located along the paleo margin of Gondwana. The southwest of Iberian Massif (Ossa–Morena Complex) contains an excellent representation of Cadomian basement. The oldest sedimentary succession of this region, the Serie Negra Group (c. 600–541 Ma), is composed by the Montemolín Formation which consists of metapelites, metagreywackes and abundant amphibolites; and the Tentudía Formation which consists of metagreywackes, black quartzites and metapelites. The whole-rock and Nd isotopic geochemistry of the Montemolín and Tentudía formations, are consistent with a deposition in a back-arc or fore-arc setting. Their Nd isotopic composition shows highly negative εNd(t) values in a range between − 6.9 and − 11.5, resulting in old Paleoproterozoic Nd model ages between 1.9 and 1.7 Ga. The Nd isotopic signatures obtained for the Cadomian basement in the Iberian Massif are almost identical to those obtained for equivalent sedimentary series in the Saxo-Thuringian Zone (Bohemian Massif), where Nd model ages range between 2 and 1.6 Ga. The limited variability of these Nd-TDM ages suggests that the southwestern Iberian and North Bohemian series shared a common source during Ediacaran times, which would be located close to the periphery of the West African Craton. The Nd isotopic data considered herein provide solid evidence about the peri-Gondwanan location and correlation between the Cadomian basement of southwestern Iberia and North Bohemia.Research funded by Spanish project CGL2016-76438-P (Ministerio de Economía, Industria y Competitividad).Peer reviewedSpringer NatureMinisterio de Economía, Industria y Competitividad (España)Díez Fernández, Rubén [0000-0002-0379-7970]Martín Parra, L.M. [0000-0003-2816-5299]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202220222021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/280943reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//CGL2016-76438-Phttps://doi.org/10.1007/s00531-020-01963-0Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2809432026-05-22T06:33:51Z
dc.title.none.fl_str_mv Geochemistry and Sm–Nd isotopic sources of Late Ediacaran siliciclastic series in the Ossa–Morena Complex: Iberian–Bohemian correlations
title Geochemistry and Sm–Nd isotopic sources of Late Ediacaran siliciclastic series in the Ossa–Morena Complex: Iberian–Bohemian correlations
spellingShingle Geochemistry and Sm–Nd isotopic sources of Late Ediacaran siliciclastic series in the Ossa–Morena Complex: Iberian–Bohemian correlations
Rojo-Pérez, E.
Late Ediacaran series
Iberian massif
Bohemian massif
Nd isotope geochemistry
Variscan correlation
Peri-Gondwana paleogeography
title_short Geochemistry and Sm–Nd isotopic sources of Late Ediacaran siliciclastic series in the Ossa–Morena Complex: Iberian–Bohemian correlations
title_full Geochemistry and Sm–Nd isotopic sources of Late Ediacaran siliciclastic series in the Ossa–Morena Complex: Iberian–Bohemian correlations
title_fullStr Geochemistry and Sm–Nd isotopic sources of Late Ediacaran siliciclastic series in the Ossa–Morena Complex: Iberian–Bohemian correlations
title_full_unstemmed Geochemistry and Sm–Nd isotopic sources of Late Ediacaran siliciclastic series in the Ossa–Morena Complex: Iberian–Bohemian correlations
title_sort Geochemistry and Sm–Nd isotopic sources of Late Ediacaran siliciclastic series in the Ossa–Morena Complex: Iberian–Bohemian correlations
dc.creator.none.fl_str_mv Rojo-Pérez, E.
Fuenlabrada, J.M.
Linnemann, Ulf
Arenas, Ricardo
Sánchez Martínez, Sonia
Díez Fernández, Rubén
Martín Parra, L.M.
Matas, Jerónimo
Andonaegui, P.
Fernández Suárez, Javier
author Rojo-Pérez, E.
author_facet Rojo-Pérez, E.
Fuenlabrada, J.M.
Linnemann, Ulf
Arenas, Ricardo
Sánchez Martínez, Sonia
Díez Fernández, Rubén
Martín Parra, L.M.
Matas, Jerónimo
Andonaegui, P.
Fernández Suárez, Javier
author_role author
author2 Fuenlabrada, J.M.
Linnemann, Ulf
Arenas, Ricardo
Sánchez Martínez, Sonia
Díez Fernández, Rubén
Martín Parra, L.M.
Matas, Jerónimo
Andonaegui, P.
Fernández Suárez, Javier
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía, Industria y Competitividad (España)
Díez Fernández, Rubén [0000-0002-0379-7970]
Martín Parra, L.M. [0000-0003-2816-5299]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Late Ediacaran series
Iberian massif
Bohemian massif
Nd isotope geochemistry
Variscan correlation
Peri-Gondwana paleogeography
topic Late Ediacaran series
Iberian massif
Bohemian massif
Nd isotope geochemistry
Variscan correlation
Peri-Gondwana paleogeography
description [EN] The Cadomian basement in central and southern Europe is composed by Ediacaran–Early Cambrian sequences that appear dismembered along the Variscan Orogen. These ancient series contain geochemical and isotopic keys related to their deposition in different basins located along the paleo margin of Gondwana. The southwest of Iberian Massif (Ossa–Morena Complex) contains an excellent representation of Cadomian basement. The oldest sedimentary succession of this region, the Serie Negra Group (c. 600–541 Ma), is composed by the Montemolín Formation which consists of metapelites, metagreywackes and abundant amphibolites; and the Tentudía Formation which consists of metagreywackes, black quartzites and metapelites. The whole-rock and Nd isotopic geochemistry of the Montemolín and Tentudía formations, are consistent with a deposition in a back-arc or fore-arc setting. Their Nd isotopic composition shows highly negative εNd(t) values in a range between − 6.9 and − 11.5, resulting in old Paleoproterozoic Nd model ages between 1.9 and 1.7 Ga. The Nd isotopic signatures obtained for the Cadomian basement in the Iberian Massif are almost identical to those obtained for equivalent sedimentary series in the Saxo-Thuringian Zone (Bohemian Massif), where Nd model ages range between 2 and 1.6 Ga. The limited variability of these Nd-TDM ages suggests that the southwestern Iberian and North Bohemian series shared a common source during Ediacaran times, which would be located close to the periphery of the West African Craton. The Nd isotopic data considered herein provide solid evidence about the peri-Gondwanan location and correlation between the Cadomian basement of southwestern Iberia and North Bohemia.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
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/10261/280943
url http://hdl.handle.net/10261/280943
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO//CGL2016-76438-P
https://doi.org/10.1007/s00531-020-01963-0
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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