Accretionary models for the Neoproterozoic evolution of the Borborema Province: advances and open questions

Detalhes bibliográficos
Autor(a) principal: Santos,Lauro Cézar Montefalco de Lira
Data de Publicação: 2021
Outros Autores: Caxito,Fabricio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Geology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892021000200301
Resumo: Abstract The current knowledge on the accretionary evolution of the Borborema Province is evaluated considering recently published data and interpretations. Early to late Neoproterozoic eclogite, ophiolite, and magmatic arc remnants have been documented and point to oceanic crust consumption. Isotopic contrasts as well as geophysical anomalies across the major domain boundaries are suggestive of collisional sutures and a speculative model of terrane accretion is presented here. On the other hand, the lack of concise evidence for some of the proposed deep-seated structures as well as putative lithospheric continuity in both sides of it suggest reworking of previously continuous lithosphere through intracontinental deformation in localized sectors of the province interior. It is patent that one model does not preclude the other and available evidence so far has triggered the emergence of conciliatory proposals for the Neoporterozoic history the Borborema Province.
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spelling Accretionary models for the Neoproterozoic evolution of the Borborema Province: advances and open questionsaccretion tectonicsNeoproterozoic terrane assemblyBorborema ProvinceAbstract The current knowledge on the accretionary evolution of the Borborema Province is evaluated considering recently published data and interpretations. Early to late Neoproterozoic eclogite, ophiolite, and magmatic arc remnants have been documented and point to oceanic crust consumption. Isotopic contrasts as well as geophysical anomalies across the major domain boundaries are suggestive of collisional sutures and a speculative model of terrane accretion is presented here. On the other hand, the lack of concise evidence for some of the proposed deep-seated structures as well as putative lithospheric continuity in both sides of it suggest reworking of previously continuous lithosphere through intracontinental deformation in localized sectors of the province interior. It is patent that one model does not preclude the other and available evidence so far has triggered the emergence of conciliatory proposals for the Neoporterozoic history the Borborema Province.Sociedade Brasileira de Geologia2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892021000200301Brazilian Journal of Geology v.51 n.2 2021reponame:Brazilian Journal of Geologyinstname:Sociedade Brasileira de Geologia (SBGEO)instacron:SBGEO10.1590/2317-4889202120200104info:eu-repo/semantics/openAccessSantos,Lauro Cézar Montefalco de LiraCaxito,Fabricioeng2021-03-09T00:00:00Zoai:scielo:S2317-48892021000200301Revistahttp://bjg.siteoficial.ws/index.htmhttps://old.scielo.br/oai/scielo-oai.phpsbgsede@sbgeo.org.br||claudio.riccomini@gmail.com2317-46922317-4692opendoar:2021-03-09T00:00Brazilian Journal of Geology - Sociedade Brasileira de Geologia (SBGEO)false
dc.title.none.fl_str_mv Accretionary models for the Neoproterozoic evolution of the Borborema Province: advances and open questions
title Accretionary models for the Neoproterozoic evolution of the Borborema Province: advances and open questions
spellingShingle Accretionary models for the Neoproterozoic evolution of the Borborema Province: advances and open questions
Santos,Lauro Cézar Montefalco de Lira
accretion tectonics
Neoproterozoic terrane assembly
Borborema Province
title_short Accretionary models for the Neoproterozoic evolution of the Borborema Province: advances and open questions
title_full Accretionary models for the Neoproterozoic evolution of the Borborema Province: advances and open questions
title_fullStr Accretionary models for the Neoproterozoic evolution of the Borborema Province: advances and open questions
title_full_unstemmed Accretionary models for the Neoproterozoic evolution of the Borborema Province: advances and open questions
title_sort Accretionary models for the Neoproterozoic evolution of the Borborema Province: advances and open questions
author Santos,Lauro Cézar Montefalco de Lira
author_facet Santos,Lauro Cézar Montefalco de Lira
Caxito,Fabricio
author_role author
author2 Caxito,Fabricio
author2_role author
dc.contributor.author.fl_str_mv Santos,Lauro Cézar Montefalco de Lira
Caxito,Fabricio
dc.subject.por.fl_str_mv accretion tectonics
Neoproterozoic terrane assembly
Borborema Province
topic accretion tectonics
Neoproterozoic terrane assembly
Borborema Province
description Abstract The current knowledge on the accretionary evolution of the Borborema Province is evaluated considering recently published data and interpretations. Early to late Neoproterozoic eclogite, ophiolite, and magmatic arc remnants have been documented and point to oceanic crust consumption. Isotopic contrasts as well as geophysical anomalies across the major domain boundaries are suggestive of collisional sutures and a speculative model of terrane accretion is presented here. On the other hand, the lack of concise evidence for some of the proposed deep-seated structures as well as putative lithospheric continuity in both sides of it suggest reworking of previously continuous lithosphere through intracontinental deformation in localized sectors of the province interior. It is patent that one model does not preclude the other and available evidence so far has triggered the emergence of conciliatory proposals for the Neoporterozoic history the Borborema Province.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892021000200301
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892021000200301
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/2317-4889202120200104
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Geologia
publisher.none.fl_str_mv Sociedade Brasileira de Geologia
dc.source.none.fl_str_mv Brazilian Journal of Geology v.51 n.2 2021
reponame:Brazilian Journal of Geology
instname:Sociedade Brasileira de Geologia (SBGEO)
instacron:SBGEO
instname_str Sociedade Brasileira de Geologia (SBGEO)
instacron_str SBGEO
institution SBGEO
reponame_str Brazilian Journal of Geology
collection Brazilian Journal of Geology
repository.name.fl_str_mv Brazilian Journal of Geology - Sociedade Brasileira de Geologia (SBGEO)
repository.mail.fl_str_mv sbgsede@sbgeo.org.br||claudio.riccomini@gmail.com
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