A template for an improved rock-based subdivision of the pre-Cryogenian timescale

Autores
Shields, Graham A.; Strachan, Robin A.; Porter, Susannah M.; Halverson, Galen P.; Macdonald, Francis A.; Plumb, Kenneth A.; de Alvarenga, Carlos J.; Banerjee, Dhiraj M.; Bekker, Andrey; Bleeker, Wouter; Brasier, Alexander; Chakraborty, Partha P.; Collins, Alan S.; Condie, Kent; Das, Kaushik; Evans, David A. D.; Ernst, Richard; Fallick, Anthony E.; Frimmel, Hartwig; Fuck, Reinhardt; Hoffman, Paul F.; Kamber, Balz S.; Kuznetsov, Anton B.; Mitchell, Ross N.; Poire, Daniel Gustavo; Poulton, Simon W.; Riding, Robert; Sharma, Mukund; Storey, Craig; Stueeken, Eva; Tostevin, Rosalie; Turner, Elizabeth; Xiao, Shuhai; Zhang, Shuanhong; Zhou, Ying; Zhu, Maoyan
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The geological timescale before 720 Ma uses rounded absolute ages rather than specific events recorded in rocks to subdivide time. This has led increasingly to mismatches between subdivisions and the features for which they were named. Here we review the formal processes that led to the current timescale, outline rock-based concepts that could be used to subdivide pre-Cryogenian time and propose revisions. An appraisal of the Precambrian rock record confirms that purely chronostratigraphic subdivision would require only modest deviation from current chronometric boundaries, removal of which could be expedited by establishing event-based concepts and provisional, approximate ages for eon-, era-and period-level subdivisions. Our review leads to the following conclusions: (1) the current informal four-fold Archean subdivision should be simplified to a tripartite scheme, pending more detailed analysis, and (2) an improved rock-based Proterozoic Eon might comprise a Paleoproterozoic Era with three periods (early Paleoproterozoic or Skourian, Rhyacian, Orosirian), Mesoproterozoic Era with four periods (Statherian, Calymmian, Ectasian, Stenian) and a Neoproterozoic Era with four periods ( pre-Tonian or Kleisian, Tonian, Cryogenian and Ediacaran). These proposals stem from a wide community and could be used to guide future development of the pre-Cryogenian timescale by international bodies.
Fil: Shields, Graham A.. Colegio Universitario de Londres; Reino Unido
Fil: Strachan, Robin A.. University of Portsmouth; Reino Unido
Fil: Porter, Susannah M.. University of California; Estados Unidos
Fil: Halverson, Galen P.. McGill University; Canadá
Fil: Macdonald, Francis A.. University of California; Estados Unidos
Fil: Plumb, Kenneth A.. Geoscience Australia; Australia
Fil: de Alvarenga, Carlos J.. Universidade do Brasília; Brasil
Fil: Banerjee, Dhiraj M.. University of Delhi; India
Fil: Bekker, Andrey. University of California; Estados Unidos
Fil: Bleeker, Wouter. Geological Survey of Canada; Canadá
Fil: Brasier, Alexander. University of Aberdeen; Reino Unido
Fil: Chakraborty, Partha P.. University of Delhi; India
Fil: Collins, Alan S.. University of Adelaide; Australia
Fil: Condie, Kent. New Mexico Institute of Mining and Technology; Estados Unidos
Fil: Das, Kaushik. Hiroshima University; Japón
Fil: Evans, David A. D.. University of Yale; Estados Unidos
Fil: Ernst, Richard. Carleton University; Canadá. Tomsk State University; Rusia
Fil: Fallick, Anthony E.. Scottish Universities Environmental Research Centre; Reino Unido
Fil: Frimmel, Hartwig. Universität Würzburg; Alemania
Fil: Fuck, Reinhardt. Universidade do Brasília; Brasil
Fil: Hoffman, Paul F.. University of Victoria; Canadá. Harvard University; Estados Unidos
Fil: Kamber, Balz S.. Queensland University of Technology; Australia
Fil: Kuznetsov, Anton B.. Institute of Precambrian Geology and Geochronology; Rusia
Fil: Mitchell, Ross N.. Chinese Academy of Sciences; República de China
Fil: Poire, Daniel Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Poulton, Simon W.. University of Leeds; Reino Unido
Fil: Riding, Robert. University of Tennessee; Estados Unidos
Fil: Sharma, Mukund. Birbal Sahni Institute of Palaeobotany; India
Fil: Storey, Craig. University of Portsmouth; Reino Unido
Fil: Stueeken, Eva. University of St. Andrews; Reino Unido
Fil: Tostevin, Rosalie. University of Cape Town; Sudáfrica
Fil: Turner, Elizabeth. Laurentian University; Canadá
Fil: Xiao, Shuhai. Virginia Tech University; Estados Unidos
Fil: Zhang, Shuanhong. Chinese Academy of Geological Sciences; China
Fil: Zhou, Ying. Colegio Universitario de Londres; Reino Unido
Fil: Zhu, Maoyan. Chinese Academy of Sciences. Nanjing Institute of Geology and Palaeontology; República de China
Materia
PRECAMBRIAN
PRE-CRYOGENIAN
TIMESCALE
ISOTOPES
GEOBIOLOGY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/161888

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oai_identifier_str oai:ri.conicet.gov.ar:11336/161888
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network_name_str CONICET Digital (CONICET)
spelling A template for an improved rock-based subdivision of the pre-Cryogenian timescaleShields, Graham A.Strachan, Robin A.Porter, Susannah M.Halverson, Galen P.Macdonald, Francis A.Plumb, Kenneth A.de Alvarenga, Carlos J.Banerjee, Dhiraj M.Bekker, AndreyBleeker, WouterBrasier, AlexanderChakraborty, Partha P.Collins, Alan S.Condie, KentDas, KaushikEvans, David A. D.Ernst, RichardFallick, Anthony E.Frimmel, HartwigFuck, ReinhardtHoffman, Paul F.Kamber, Balz S.Kuznetsov, Anton B.Mitchell, Ross N.Poire, Daniel GustavoPoulton, Simon W.Riding, RobertSharma, MukundStorey, CraigStueeken, EvaTostevin, RosalieTurner, ElizabethXiao, ShuhaiZhang, ShuanhongZhou, YingZhu, MaoyanPRECAMBRIANPRE-CRYOGENIANTIMESCALEISOTOPESGEOBIOLOGYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The geological timescale before 720 Ma uses rounded absolute ages rather than specific events recorded in rocks to subdivide time. This has led increasingly to mismatches between subdivisions and the features for which they were named. Here we review the formal processes that led to the current timescale, outline rock-based concepts that could be used to subdivide pre-Cryogenian time and propose revisions. An appraisal of the Precambrian rock record confirms that purely chronostratigraphic subdivision would require only modest deviation from current chronometric boundaries, removal of which could be expedited by establishing event-based concepts and provisional, approximate ages for eon-, era-and period-level subdivisions. Our review leads to the following conclusions: (1) the current informal four-fold Archean subdivision should be simplified to a tripartite scheme, pending more detailed analysis, and (2) an improved rock-based Proterozoic Eon might comprise a Paleoproterozoic Era with three periods (early Paleoproterozoic or Skourian, Rhyacian, Orosirian), Mesoproterozoic Era with four periods (Statherian, Calymmian, Ectasian, Stenian) and a Neoproterozoic Era with four periods ( pre-Tonian or Kleisian, Tonian, Cryogenian and Ediacaran). These proposals stem from a wide community and could be used to guide future development of the pre-Cryogenian timescale by international bodies.Fil: Shields, Graham A.. Colegio Universitario de Londres; Reino UnidoFil: Strachan, Robin A.. University of Portsmouth; Reino UnidoFil: Porter, Susannah M.. University of California; Estados UnidosFil: Halverson, Galen P.. McGill University; CanadáFil: Macdonald, Francis A.. University of California; Estados UnidosFil: Plumb, Kenneth A.. Geoscience Australia; AustraliaFil: de Alvarenga, Carlos J.. Universidade do Brasília; BrasilFil: Banerjee, Dhiraj M.. University of Delhi; IndiaFil: Bekker, Andrey. University of California; Estados UnidosFil: Bleeker, Wouter. Geological Survey of Canada; CanadáFil: Brasier, Alexander. University of Aberdeen; Reino UnidoFil: Chakraborty, Partha P.. University of Delhi; IndiaFil: Collins, Alan S.. University of Adelaide; AustraliaFil: Condie, Kent. New Mexico Institute of Mining and Technology; Estados UnidosFil: Das, Kaushik. Hiroshima University; JapónFil: Evans, David A. D.. University of Yale; Estados UnidosFil: Ernst, Richard. Carleton University; Canadá. Tomsk State University; RusiaFil: Fallick, Anthony E.. Scottish Universities Environmental Research Centre; Reino UnidoFil: Frimmel, Hartwig. Universität Würzburg; AlemaniaFil: Fuck, Reinhardt. Universidade do Brasília; BrasilFil: Hoffman, Paul F.. University of Victoria; Canadá. Harvard University; Estados UnidosFil: Kamber, Balz S.. Queensland University of Technology; AustraliaFil: Kuznetsov, Anton B.. Institute of Precambrian Geology and Geochronology; RusiaFil: Mitchell, Ross N.. Chinese Academy of Sciences; República de ChinaFil: Poire, Daniel Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Poulton, Simon W.. University of Leeds; Reino UnidoFil: Riding, Robert. University of Tennessee; Estados UnidosFil: Sharma, Mukund. Birbal Sahni Institute of Palaeobotany; IndiaFil: Storey, Craig. University of Portsmouth; Reino UnidoFil: Stueeken, Eva. University of St. Andrews; Reino UnidoFil: Tostevin, Rosalie. University of Cape Town; SudáfricaFil: Turner, Elizabeth. Laurentian University; CanadáFil: Xiao, Shuhai. Virginia Tech University; Estados UnidosFil: Zhang, Shuanhong. Chinese Academy of Geological Sciences; ChinaFil: Zhou, Ying. Colegio Universitario de Londres; Reino UnidoFil: Zhu, Maoyan. Chinese Academy of Sciences. Nanjing Institute of Geology and Palaeontology; República de ChinaGeological Society Publications House2022-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/161888Shields, Graham A.; Strachan, Robin A.; Porter, Susannah M.; Halverson, Galen P.; Macdonald, Francis A.; et al.; A template for an improved rock-based subdivision of the pre-Cryogenian timescale; Geological Society Publications House; Journal of the Geological Society; 179; 1; 1-2022; 1-220016-7649CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://jgs.lyellcollection.org/lookup/doi/10.1144/jgs2020-222info:eu-repo/semantics/altIdentifier/doi/10.1144/jgs2020-222info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:11:27Zoai:ri.conicet.gov.ar:11336/161888instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:11:27.686CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A template for an improved rock-based subdivision of the pre-Cryogenian timescale
title A template for an improved rock-based subdivision of the pre-Cryogenian timescale
spellingShingle A template for an improved rock-based subdivision of the pre-Cryogenian timescale
Shields, Graham A.
PRECAMBRIAN
PRE-CRYOGENIAN
TIMESCALE
ISOTOPES
GEOBIOLOGY
title_short A template for an improved rock-based subdivision of the pre-Cryogenian timescale
title_full A template for an improved rock-based subdivision of the pre-Cryogenian timescale
title_fullStr A template for an improved rock-based subdivision of the pre-Cryogenian timescale
title_full_unstemmed A template for an improved rock-based subdivision of the pre-Cryogenian timescale
title_sort A template for an improved rock-based subdivision of the pre-Cryogenian timescale
dc.creator.none.fl_str_mv Shields, Graham A.
Strachan, Robin A.
Porter, Susannah M.
Halverson, Galen P.
Macdonald, Francis A.
Plumb, Kenneth A.
de Alvarenga, Carlos J.
Banerjee, Dhiraj M.
Bekker, Andrey
Bleeker, Wouter
Brasier, Alexander
Chakraborty, Partha P.
Collins, Alan S.
Condie, Kent
Das, Kaushik
Evans, David A. D.
Ernst, Richard
Fallick, Anthony E.
Frimmel, Hartwig
Fuck, Reinhardt
Hoffman, Paul F.
Kamber, Balz S.
Kuznetsov, Anton B.
Mitchell, Ross N.
Poire, Daniel Gustavo
Poulton, Simon W.
Riding, Robert
Sharma, Mukund
Storey, Craig
Stueeken, Eva
Tostevin, Rosalie
Turner, Elizabeth
Xiao, Shuhai
Zhang, Shuanhong
Zhou, Ying
Zhu, Maoyan
author Shields, Graham A.
author_facet Shields, Graham A.
Strachan, Robin A.
Porter, Susannah M.
Halverson, Galen P.
Macdonald, Francis A.
Plumb, Kenneth A.
de Alvarenga, Carlos J.
Banerjee, Dhiraj M.
Bekker, Andrey
Bleeker, Wouter
Brasier, Alexander
Chakraborty, Partha P.
Collins, Alan S.
Condie, Kent
Das, Kaushik
Evans, David A. D.
Ernst, Richard
Fallick, Anthony E.
Frimmel, Hartwig
Fuck, Reinhardt
Hoffman, Paul F.
Kamber, Balz S.
Kuznetsov, Anton B.
Mitchell, Ross N.
Poire, Daniel Gustavo
Poulton, Simon W.
Riding, Robert
Sharma, Mukund
Storey, Craig
Stueeken, Eva
Tostevin, Rosalie
Turner, Elizabeth
Xiao, Shuhai
Zhang, Shuanhong
Zhou, Ying
Zhu, Maoyan
author_role author
author2 Strachan, Robin A.
Porter, Susannah M.
Halverson, Galen P.
Macdonald, Francis A.
Plumb, Kenneth A.
de Alvarenga, Carlos J.
Banerjee, Dhiraj M.
Bekker, Andrey
Bleeker, Wouter
Brasier, Alexander
Chakraborty, Partha P.
Collins, Alan S.
Condie, Kent
Das, Kaushik
Evans, David A. D.
Ernst, Richard
Fallick, Anthony E.
Frimmel, Hartwig
Fuck, Reinhardt
Hoffman, Paul F.
Kamber, Balz S.
Kuznetsov, Anton B.
Mitchell, Ross N.
Poire, Daniel Gustavo
Poulton, Simon W.
Riding, Robert
Sharma, Mukund
Storey, Craig
Stueeken, Eva
Tostevin, Rosalie
Turner, Elizabeth
Xiao, Shuhai
Zhang, Shuanhong
Zhou, Ying
Zhu, Maoyan
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv PRECAMBRIAN
PRE-CRYOGENIAN
TIMESCALE
ISOTOPES
GEOBIOLOGY
topic PRECAMBRIAN
PRE-CRYOGENIAN
TIMESCALE
ISOTOPES
GEOBIOLOGY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The geological timescale before 720 Ma uses rounded absolute ages rather than specific events recorded in rocks to subdivide time. This has led increasingly to mismatches between subdivisions and the features for which they were named. Here we review the formal processes that led to the current timescale, outline rock-based concepts that could be used to subdivide pre-Cryogenian time and propose revisions. An appraisal of the Precambrian rock record confirms that purely chronostratigraphic subdivision would require only modest deviation from current chronometric boundaries, removal of which could be expedited by establishing event-based concepts and provisional, approximate ages for eon-, era-and period-level subdivisions. Our review leads to the following conclusions: (1) the current informal four-fold Archean subdivision should be simplified to a tripartite scheme, pending more detailed analysis, and (2) an improved rock-based Proterozoic Eon might comprise a Paleoproterozoic Era with three periods (early Paleoproterozoic or Skourian, Rhyacian, Orosirian), Mesoproterozoic Era with four periods (Statherian, Calymmian, Ectasian, Stenian) and a Neoproterozoic Era with four periods ( pre-Tonian or Kleisian, Tonian, Cryogenian and Ediacaran). These proposals stem from a wide community and could be used to guide future development of the pre-Cryogenian timescale by international bodies.
Fil: Shields, Graham A.. Colegio Universitario de Londres; Reino Unido
Fil: Strachan, Robin A.. University of Portsmouth; Reino Unido
Fil: Porter, Susannah M.. University of California; Estados Unidos
Fil: Halverson, Galen P.. McGill University; Canadá
Fil: Macdonald, Francis A.. University of California; Estados Unidos
Fil: Plumb, Kenneth A.. Geoscience Australia; Australia
Fil: de Alvarenga, Carlos J.. Universidade do Brasília; Brasil
Fil: Banerjee, Dhiraj M.. University of Delhi; India
Fil: Bekker, Andrey. University of California; Estados Unidos
Fil: Bleeker, Wouter. Geological Survey of Canada; Canadá
Fil: Brasier, Alexander. University of Aberdeen; Reino Unido
Fil: Chakraborty, Partha P.. University of Delhi; India
Fil: Collins, Alan S.. University of Adelaide; Australia
Fil: Condie, Kent. New Mexico Institute of Mining and Technology; Estados Unidos
Fil: Das, Kaushik. Hiroshima University; Japón
Fil: Evans, David A. D.. University of Yale; Estados Unidos
Fil: Ernst, Richard. Carleton University; Canadá. Tomsk State University; Rusia
Fil: Fallick, Anthony E.. Scottish Universities Environmental Research Centre; Reino Unido
Fil: Frimmel, Hartwig. Universität Würzburg; Alemania
Fil: Fuck, Reinhardt. Universidade do Brasília; Brasil
Fil: Hoffman, Paul F.. University of Victoria; Canadá. Harvard University; Estados Unidos
Fil: Kamber, Balz S.. Queensland University of Technology; Australia
Fil: Kuznetsov, Anton B.. Institute of Precambrian Geology and Geochronology; Rusia
Fil: Mitchell, Ross N.. Chinese Academy of Sciences; República de China
Fil: Poire, Daniel Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Poulton, Simon W.. University of Leeds; Reino Unido
Fil: Riding, Robert. University of Tennessee; Estados Unidos
Fil: Sharma, Mukund. Birbal Sahni Institute of Palaeobotany; India
Fil: Storey, Craig. University of Portsmouth; Reino Unido
Fil: Stueeken, Eva. University of St. Andrews; Reino Unido
Fil: Tostevin, Rosalie. University of Cape Town; Sudáfrica
Fil: Turner, Elizabeth. Laurentian University; Canadá
Fil: Xiao, Shuhai. Virginia Tech University; Estados Unidos
Fil: Zhang, Shuanhong. Chinese Academy of Geological Sciences; China
Fil: Zhou, Ying. Colegio Universitario de Londres; Reino Unido
Fil: Zhu, Maoyan. Chinese Academy of Sciences. Nanjing Institute of Geology and Palaeontology; República de China
description The geological timescale before 720 Ma uses rounded absolute ages rather than specific events recorded in rocks to subdivide time. This has led increasingly to mismatches between subdivisions and the features for which they were named. Here we review the formal processes that led to the current timescale, outline rock-based concepts that could be used to subdivide pre-Cryogenian time and propose revisions. An appraisal of the Precambrian rock record confirms that purely chronostratigraphic subdivision would require only modest deviation from current chronometric boundaries, removal of which could be expedited by establishing event-based concepts and provisional, approximate ages for eon-, era-and period-level subdivisions. Our review leads to the following conclusions: (1) the current informal four-fold Archean subdivision should be simplified to a tripartite scheme, pending more detailed analysis, and (2) an improved rock-based Proterozoic Eon might comprise a Paleoproterozoic Era with three periods (early Paleoproterozoic or Skourian, Rhyacian, Orosirian), Mesoproterozoic Era with four periods (Statherian, Calymmian, Ectasian, Stenian) and a Neoproterozoic Era with four periods ( pre-Tonian or Kleisian, Tonian, Cryogenian and Ediacaran). These proposals stem from a wide community and could be used to guide future development of the pre-Cryogenian timescale by international bodies.
publishDate 2022
dc.date.none.fl_str_mv 2022-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/161888
Shields, Graham A.; Strachan, Robin A.; Porter, Susannah M.; Halverson, Galen P.; Macdonald, Francis A.; et al.; A template for an improved rock-based subdivision of the pre-Cryogenian timescale; Geological Society Publications House; Journal of the Geological Society; 179; 1; 1-2022; 1-22
0016-7649
CONICET Digital
CONICET
url http://hdl.handle.net/11336/161888
identifier_str_mv Shields, Graham A.; Strachan, Robin A.; Porter, Susannah M.; Halverson, Galen P.; Macdonald, Francis A.; et al.; A template for an improved rock-based subdivision of the pre-Cryogenian timescale; Geological Society Publications House; Journal of the Geological Society; 179; 1; 1-2022; 1-22
0016-7649
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://jgs.lyellcollection.org/lookup/doi/10.1144/jgs2020-222
info:eu-repo/semantics/altIdentifier/doi/10.1144/jgs2020-222
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Geological Society Publications House
publisher.none.fl_str_mv Geological Society Publications House
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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