The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation

Detalhes bibliográficos
Autor(a) principal: De Barros, Tatiele
Data de Publicação: 2023
Outros Autores: Castro De Brito, Priscila, Corval Vieira, Artur, Valente, Sérgio De Castro, Miranda, Alan
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.9/4188
Resumo: ABSTRACT: The Cabo Frio High, limit between Campos and Santos basins, consists of an elevated structure characterized by intense magmatism. Through new petrographic and geochemical data, this paper brings new highlights on sources and evolutionary processes associated with volcanic events that affected this area during Santonian-Campanian drifting stage. Samples from three studied wells are pyroclastic ash, lapilli tuffs, basalts, scoria and diabases associated with subaerial explosive volcanism. Geochemically, they are alkaline rocks classified as basalts, alkaline basalts, foidites and tephriphonolites. The evolution of these rocks derives from geodynamic processes that occurred in shallow mantle depths (35 – 80 km) and involved mixing between a depleted, relatively shallow asthenospheric source (N-MORB) and the local subcontinental lithospheric mantle represented by the average composition of the lamprophyres at the Cabo Frio Structural High.
id RCAP_db7fbb8a31e58d62b56d0791a1f4d1f1
oai_identifier_str oai:repositorio.lneg.pt:10400.9/4188
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formationO magmatismo pós-fragmentação no Alto de Cabo Frio, Bacia de Campos, Brasil: implicações para a contribuição de uma litosfera adelgaçada na formação de magmaVolcanismLithogeochemistryCabo Frio HighVulcanismoLitogeoquímicaAlto de Cabo FrioABSTRACT: The Cabo Frio High, limit between Campos and Santos basins, consists of an elevated structure characterized by intense magmatism. Through new petrographic and geochemical data, this paper brings new highlights on sources and evolutionary processes associated with volcanic events that affected this area during Santonian-Campanian drifting stage. Samples from three studied wells are pyroclastic ash, lapilli tuffs, basalts, scoria and diabases associated with subaerial explosive volcanism. Geochemically, they are alkaline rocks classified as basalts, alkaline basalts, foidites and tephriphonolites. The evolution of these rocks derives from geodynamic processes that occurred in shallow mantle depths (35 – 80 km) and involved mixing between a depleted, relatively shallow asthenospheric source (N-MORB) and the local subcontinental lithospheric mantle represented by the average composition of the lamprophyres at the Cabo Frio Structural High.RESUMO: O Alto de Cabo Frio, limite entre as bacias de Campos e Santos, é uma estrutura elevada caracterizada por intenso magmatismo. Novos dados petrográficos e geoquímicos deste trabalho fornecem novas perspetivas acerca das fontes e processos evolucionários associados a eventos vulcânicos que afetaram esta área durante o Santoniano-Campaniano. Amostras de poços estudados são cinzas piroclásticas, lapilli tufos, basaltos, escórias e diabásios associados com um vulcanismo subaéreo explosivo. Geoquimicamente, são rochas alcalinas classificadas como basaltos, basaltos alcalinos, foiditos e tefrifonolitos. A evolução dessas rochas deriva de processos geodinâmicos que ocorreram a profundidades reduzidas no manto (35 – 80 km) e envolveram a mistura entre uma fonte astenosférica relativamente superficial e esvaziada (N-MORB) e o manto litosférico subcontinental local representado pela composição média dos lamprófiros do Alto Estrutural de Cabo Frio.LNEG - Laboratório Nacional de Energia e GeologiaRepositório do LNEGDe Barros, TatieleCastro De Brito, PriscilaCorval Vieira, ArturValente, Sérgio De CastroMiranda, Alan2023-12-05T15:38:43Z2023-102023-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/4188engBarros, Tatiele... et.al - The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation. In: Comunicações Geológicas, 2023, vol. 110, nº 1, p. 39-600873-948X10.34637/h145-3n131647-581Xinfo: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:RCAAP2023-12-10T06:08:24Zoai:repositorio.lneg.pt:10400.9/4188Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:42:09.187390Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation
O magmatismo pós-fragmentação no Alto de Cabo Frio, Bacia de Campos, Brasil: implicações para a contribuição de uma litosfera adelgaçada na formação de magma
title The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation
spellingShingle The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation
De Barros, Tatiele
Volcanism
Lithogeochemistry
Cabo Frio High
Vulcanismo
Litogeoquímica
Alto de Cabo Frio
title_short The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation
title_full The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation
title_fullStr The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation
title_full_unstemmed The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation
title_sort The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation
author De Barros, Tatiele
author_facet De Barros, Tatiele
Castro De Brito, Priscila
Corval Vieira, Artur
Valente, Sérgio De Castro
Miranda, Alan
author_role author
author2 Castro De Brito, Priscila
Corval Vieira, Artur
Valente, Sérgio De Castro
Miranda, Alan
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Repositório do LNEG
dc.contributor.author.fl_str_mv De Barros, Tatiele
Castro De Brito, Priscila
Corval Vieira, Artur
Valente, Sérgio De Castro
Miranda, Alan
dc.subject.por.fl_str_mv Volcanism
Lithogeochemistry
Cabo Frio High
Vulcanismo
Litogeoquímica
Alto de Cabo Frio
topic Volcanism
Lithogeochemistry
Cabo Frio High
Vulcanismo
Litogeoquímica
Alto de Cabo Frio
description ABSTRACT: The Cabo Frio High, limit between Campos and Santos basins, consists of an elevated structure characterized by intense magmatism. Through new petrographic and geochemical data, this paper brings new highlights on sources and evolutionary processes associated with volcanic events that affected this area during Santonian-Campanian drifting stage. Samples from three studied wells are pyroclastic ash, lapilli tuffs, basalts, scoria and diabases associated with subaerial explosive volcanism. Geochemically, they are alkaline rocks classified as basalts, alkaline basalts, foidites and tephriphonolites. The evolution of these rocks derives from geodynamic processes that occurred in shallow mantle depths (35 – 80 km) and involved mixing between a depleted, relatively shallow asthenospheric source (N-MORB) and the local subcontinental lithospheric mantle represented by the average composition of the lamprophyres at the Cabo Frio Structural High.
publishDate 2023
dc.date.none.fl_str_mv 2023-12-05T15:38:43Z
2023-10
2023-10-01T00:00:00Z
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/10400.9/4188
url http://hdl.handle.net/10400.9/4188
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Barros, Tatiele... et.al - The post-breakup magmatism in Cabo Frio High, Campos Basin, Brazil: implications to a thinned lithosphere contribution in magma formation. In: Comunicações Geológicas, 2023, vol. 110, nº 1, p. 39-60
0873-948X
10.34637/h145-3n13
1647-581X
dc.rights.driver.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 LNEG - Laboratório Nacional de Energia e Geologia
publisher.none.fl_str_mv LNEG - Laboratório Nacional de Energia e Geologia
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 Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799136323370483712

Registros relacionados