SS Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations

Detalhes bibliográficos
Autor(a) principal: Chichorro, Martim
Data de Publicação: 2022
Outros Autores: Solá, Ana Rita, Bento Dos Santos, Telmo M., Amaral, João Lains, Crispim, Lourenço
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/149400
Resumo: Publisher Copyright: © M. Chichorro, A.R. Solá, T.M. Bento dos Santos, J. Lains Amaral, L. Crispim, 2022.
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spelling SS Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populationsis the ~610Ma age peak a persistent Cadomian magmatic inheritance or the key to unravel its Pan-African basement?CadomianIberian MassifInherited zirconPan-AfricanPeri-GondwananGeologyPublisher Copyright: © M. Chichorro, A.R. Solá, T.M. Bento dos Santos, J. Lains Amaral, L. Crispim, 2022.This work assessed the age distribution of Cadomian/Pan-African orogenic events (550-590 and 605-790Ma, respectively) in several zones of Iberian Massif by means of detrital and inherited zircon analysis compilation. Detrital zircon age spectra show that throughout the late Neoproterozoic-to-Early Ordovician era (~120Ma sedimentary record), the main systematic peak occurs at ~610Ma, followed by peaks at typical Cadomian ages (~590-550Ma). Inherited zircons incorporated in Cambrian-to-Lower Ordovician igneous rocks show typical Cadomian ages (~590-550Ma) but, once again, a remarkably consistent Pan-African ~610Ma peak occurs. In accordance with compiled zircon data and taking into account the evidence of North African peri-cratonic inliers, Ediacaran (~610Ma) zircons incorporated in Paleozoic magmas provide indirect evidence of Pan-African magmatism, suggesting that these magmas and synorogenic sediments are likely to constitute the cryptic stratigraphic infrastructure of most of the Iberian Massif. The main source of ~610Ma inherited zircons may be the lateral chrono-equivalents of the Saghro and Bou Salda-M`Gouna Groups (Anti-Atlas, Morocco) and/or coeval igneous rocks from West African Craton or Trans-Sahara Belt, emplaced at a stratigraphic level below the late-Ediacaran sediments of the Ossa Morena Zone and the Central Iberian Zone. Assuming that the Iberian crust is a fragment of the Pan-African orogen, a relative paleoposition situated between the West African Craton and the Trans-Saharan Belt during the Late Neoproterozoic is proposed. The closed-system behaviour of Stenian-Tonian detrital zircon ages in the Trans-Sahara Belt suggests that this mega-cordillera acted as a barrier, in paleogeographic terms, to separating the Sahara Metacraton from Iberia. In Iberia, the opening of the system to Stenian-Tonian detrital zircon during the Ordovician indicates that, at that time, the Trans-Saharan Belt had already become a vast peneplain, which favoured a large drainage system with a long-distance transport mechanism that fed the passive continental margins.GeoBioTec - Geobiociências, Geoengenharias e GeotecnologiasDCT - Departamento de Ciências da TerraRUNChichorro, MartimSolá, Ana RitaBento Dos Santos, Telmo M.Amaral, João LainsCrispim, Lourenço2023-02-17T22:23:58Z20222022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article29application/pdfhttp://hdl.handle.net/10362/149400eng1695-6133PURE: 53646747https://doi.org/10.1344/GeologicaActa2022.20.15info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-10T16:12:20ZPortal AgregadorONG
dc.title.none.fl_str_mv SS Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations
is the ~610Ma age peak a persistent Cadomian magmatic inheritance or the key to unravel its Pan-African basement?
title SS Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations
spellingShingle SS Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations
Chichorro, Martim
Cadomian
Iberian Massif
Inherited zircon
Pan-African
Peri-Gondwanan
Geology
title_short SS Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations
title_full SS Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations
title_fullStr SS Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations
title_full_unstemmed SS Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations
title_sort SS Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations
author Chichorro, Martim
author_facet Chichorro, Martim
Solá, Ana Rita
Bento Dos Santos, Telmo M.
Amaral, João Lains
Crispim, Lourenço
author_role author
author2 Solá, Ana Rita
Bento Dos Santos, Telmo M.
Amaral, João Lains
Crispim, Lourenço
author2_role author
author
author
author
dc.contributor.none.fl_str_mv GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias
DCT - Departamento de Ciências da Terra
RUN
dc.contributor.author.fl_str_mv Chichorro, Martim
Solá, Ana Rita
Bento Dos Santos, Telmo M.
Amaral, João Lains
Crispim, Lourenço
dc.subject.por.fl_str_mv Cadomian
Iberian Massif
Inherited zircon
Pan-African
Peri-Gondwanan
Geology
topic Cadomian
Iberian Massif
Inherited zircon
Pan-African
Peri-Gondwanan
Geology
description Publisher Copyright: © M. Chichorro, A.R. Solá, T.M. Bento dos Santos, J. Lains Amaral, L. Crispim, 2022.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-01-01T00:00:00Z
2023-02-17T22:23:58Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/149400
url http://hdl.handle.net/10362/149400
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1695-6133
PURE: 53646747
https://doi.org/10.1344/GeologicaActa2022.20.15
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 29
application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv
repository.mail.fl_str_mv
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