Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia

Autores
Antonio, Paul Yves Jean; Baratoux, Lenka; Ferreira Trindade, Ricardo Ivan; Rousse, Sonia; Ayite, Anani; Lana, Cristiano; Macouin, Melina; Kobby Adu, Emmanuel Williams; Sanchez, Caroline; Silva, Marco; Firmin, Anne Sophie; Martínez Dopico, Carmen Irene; Proietti, Arnaud; Amponsah, Prince Ofori; Asamoah Sakyi, Patrick
Año de publicación
2021
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The West African Craton (WAC) is one of the major cratons in the Rodinia jigsaw puzzle (~1000?750Ma). In the Rodinian models, the position of West Africa is mainly constrained by the assumptionthat it had been a partner of Amazonia since the Paleoproterozoic. Unfortunately, nopaleomagnetic data are available for these cratons when the Rodina supercontinent is consideredtectonically stable (~1000-750 Ma). Thus, every new reliable paleomagnetic pole for the WestAfrican Craton during the Neoproterozoic times is of paramount importance to constrain itsposition and testing the Rodinia models. In this study we present a combined paleomagnetic andgeochronological investigation for the Manso dyke swarm in the Leo-Man Shield, southern WestAfrica (Ghana). The ~860 Ma emplacement age for the NNW-trending Manso dykes is thus wellconstrainedby two new U-Pb apatite ages of 857.2 ± 8.5 Ma and 855 ± 16 Ma, in agreement withbaddeleyite data. Remanence of these coarse-to-fine grained dolerite dykes is carried by stablesingle to pseudo-single domain (SD-PSD) magnetite. A positive baked-contact test, associated to apositive reversal test (Class-C), support the primary remanence obtained for these dykes (13 sites).Moreover, our new paleomagnetic dataset satisfy all the seven R-criteria (R=7). The ~860 MaManso pole can thus be considered as the first key Tonian paleomagnetic pole for West Africa. Wepropose that the West Africa-Baltica-Amazonia-Congo-São Francisco were associated in a longlivedWABAMGO juxtaposition (~1100?800 Ma).
Fil: Antonio, Paul Yves Jean. National Research Institute of Science and Technology. Centre de Montpellier; Francia
Fil: Baratoux, Lenka. Université Paul Sabatier; Francia
Fil: Ferreira Trindade, Ricardo Ivan. Universidade de Sao Paulo; Brasil
Fil: Rousse, Sonia. Université Paul Sabatier; Francia
Fil: Ayite, Anani. University Of Ghana; Ghana
Fil: Lana, Cristiano. Universidade Federal de Ouro Preto; Brasil
Fil: Macouin, Melina. Université Paul Sabatier; Francia
Fil: Kobby Adu, Emmanuel Williams. University Of Ghana; Ghana
Fil: Sanchez, Caroline. Université Paul Sabatier; Francia
Fil: Silva, Marco. Universidade Federal de Ouro Preto; Brasil
Fil: Firmin, Anne Sophie. Université Paul Sabatier; Francia
Fil: Martínez Dopico, Carmen Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotópica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
Fil: Proietti, Arnaud. Centre de Microcaractérisation Raimond Castaing; Francia
Fil: Amponsah, Prince Ofori. University Of Ghana; Ghana
Fil: Asamoah Sakyi, Patrick. University Of Ghana; Ghana
EGU General Assembly 2021
Vienna
Austria
European Geosciences Union
Materia
West Africa
Manso dikes
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/173278
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/173278
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of RodiniaAntonio, Paul Yves JeanBaratoux, LenkaFerreira Trindade, Ricardo IvanRousse, SoniaAyite, AnaniLana, CristianoMacouin, MelinaKobby Adu, Emmanuel WilliamsSanchez, CarolineSilva, MarcoFirmin, Anne SophieMartínez Dopico, Carmen IreneProietti, ArnaudAmponsah, Prince OforiAsamoah Sakyi, PatrickWest AfricaManso dikeshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The West African Craton (WAC) is one of the major cratons in the Rodinia jigsaw puzzle (~1000?750Ma). In the Rodinian models, the position of West Africa is mainly constrained by the assumptionthat it had been a partner of Amazonia since the Paleoproterozoic. Unfortunately, nopaleomagnetic data are available for these cratons when the Rodina supercontinent is consideredtectonically stable (~1000-750 Ma). Thus, every new reliable paleomagnetic pole for the WestAfrican Craton during the Neoproterozoic times is of paramount importance to constrain itsposition and testing the Rodinia models. In this study we present a combined paleomagnetic andgeochronological investigation for the Manso dyke swarm in the Leo-Man Shield, southern WestAfrica (Ghana). The ~860 Ma emplacement age for the NNW-trending Manso dykes is thus wellconstrainedby two new U-Pb apatite ages of 857.2 ± 8.5 Ma and 855 ± 16 Ma, in agreement withbaddeleyite data. Remanence of these coarse-to-fine grained dolerite dykes is carried by stablesingle to pseudo-single domain (SD-PSD) magnetite. A positive baked-contact test, associated to apositive reversal test (Class-C), support the primary remanence obtained for these dykes (13 sites).Moreover, our new paleomagnetic dataset satisfy all the seven R-criteria (R=7). The ~860 MaManso pole can thus be considered as the first key Tonian paleomagnetic pole for West Africa. Wepropose that the West Africa-Baltica-Amazonia-Congo-São Francisco were associated in a longlivedWABAMGO juxtaposition (~1100?800 Ma).Fil: Antonio, Paul Yves Jean. National Research Institute of Science and Technology. Centre de Montpellier; FranciaFil: Baratoux, Lenka. Université Paul Sabatier; FranciaFil: Ferreira Trindade, Ricardo Ivan. Universidade de Sao Paulo; BrasilFil: Rousse, Sonia. Université Paul Sabatier; FranciaFil: Ayite, Anani. University Of Ghana; GhanaFil: Lana, Cristiano. Universidade Federal de Ouro Preto; BrasilFil: Macouin, Melina. Université Paul Sabatier; FranciaFil: Kobby Adu, Emmanuel Williams. University Of Ghana; GhanaFil: Sanchez, Caroline. Université Paul Sabatier; FranciaFil: Silva, Marco. Universidade Federal de Ouro Preto; BrasilFil: Firmin, Anne Sophie. Université Paul Sabatier; FranciaFil: Martínez Dopico, Carmen Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotópica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; ArgentinaFil: Proietti, Arnaud. Centre de Microcaractérisation Raimond Castaing; FranciaFil: Amponsah, Prince Ofori. University Of Ghana; GhanaFil: Asamoah Sakyi, Patrick. University Of Ghana; GhanaEGU General Assembly 2021ViennaAustriaEuropean Geosciences UnionCopernicus Publications2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/173278Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia; EGU General Assembly 2021; Vienna; Austria; 2021; 1-2CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://meetingorganizer.copernicus.org/EGU21/EGU21-13336.htmlInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:59:26Zoai:ri.conicet.gov.ar:11336/173278instacron: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:34982025-09-29 09:59:27.119CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia
title Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia
spellingShingle Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia
Antonio, Paul Yves Jean
West Africa
Manso dikes
title_short Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia
title_full Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia
title_fullStr Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia
title_full_unstemmed Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia
title_sort Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia
dc.creator.none.fl_str_mv Antonio, Paul Yves Jean
Baratoux, Lenka
Ferreira Trindade, Ricardo Ivan
Rousse, Sonia
Ayite, Anani
Lana, Cristiano
Macouin, Melina
Kobby Adu, Emmanuel Williams
Sanchez, Caroline
Silva, Marco
Firmin, Anne Sophie
Martínez Dopico, Carmen Irene
Proietti, Arnaud
Amponsah, Prince Ofori
Asamoah Sakyi, Patrick
author Antonio, Paul Yves Jean
author_facet Antonio, Paul Yves Jean
Baratoux, Lenka
Ferreira Trindade, Ricardo Ivan
Rousse, Sonia
Ayite, Anani
Lana, Cristiano
Macouin, Melina
Kobby Adu, Emmanuel Williams
Sanchez, Caroline
Silva, Marco
Firmin, Anne Sophie
Martínez Dopico, Carmen Irene
Proietti, Arnaud
Amponsah, Prince Ofori
Asamoah Sakyi, Patrick
author_role author
author2 Baratoux, Lenka
Ferreira Trindade, Ricardo Ivan
Rousse, Sonia
Ayite, Anani
Lana, Cristiano
Macouin, Melina
Kobby Adu, Emmanuel Williams
Sanchez, Caroline
Silva, Marco
Firmin, Anne Sophie
Martínez Dopico, Carmen Irene
Proietti, Arnaud
Amponsah, Prince Ofori
Asamoah Sakyi, Patrick
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv West Africa
Manso dikes
topic West Africa
Manso dikes
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 West African Craton (WAC) is one of the major cratons in the Rodinia jigsaw puzzle (~1000?750Ma). In the Rodinian models, the position of West Africa is mainly constrained by the assumptionthat it had been a partner of Amazonia since the Paleoproterozoic. Unfortunately, nopaleomagnetic data are available for these cratons when the Rodina supercontinent is consideredtectonically stable (~1000-750 Ma). Thus, every new reliable paleomagnetic pole for the WestAfrican Craton during the Neoproterozoic times is of paramount importance to constrain itsposition and testing the Rodinia models. In this study we present a combined paleomagnetic andgeochronological investigation for the Manso dyke swarm in the Leo-Man Shield, southern WestAfrica (Ghana). The ~860 Ma emplacement age for the NNW-trending Manso dykes is thus wellconstrainedby two new U-Pb apatite ages of 857.2 ± 8.5 Ma and 855 ± 16 Ma, in agreement withbaddeleyite data. Remanence of these coarse-to-fine grained dolerite dykes is carried by stablesingle to pseudo-single domain (SD-PSD) magnetite. A positive baked-contact test, associated to apositive reversal test (Class-C), support the primary remanence obtained for these dykes (13 sites).Moreover, our new paleomagnetic dataset satisfy all the seven R-criteria (R=7). The ~860 MaManso pole can thus be considered as the first key Tonian paleomagnetic pole for West Africa. Wepropose that the West Africa-Baltica-Amazonia-Congo-São Francisco were associated in a longlivedWABAMGO juxtaposition (~1100?800 Ma).
Fil: Antonio, Paul Yves Jean. National Research Institute of Science and Technology. Centre de Montpellier; Francia
Fil: Baratoux, Lenka. Université Paul Sabatier; Francia
Fil: Ferreira Trindade, Ricardo Ivan. Universidade de Sao Paulo; Brasil
Fil: Rousse, Sonia. Université Paul Sabatier; Francia
Fil: Ayite, Anani. University Of Ghana; Ghana
Fil: Lana, Cristiano. Universidade Federal de Ouro Preto; Brasil
Fil: Macouin, Melina. Université Paul Sabatier; Francia
Fil: Kobby Adu, Emmanuel Williams. University Of Ghana; Ghana
Fil: Sanchez, Caroline. Université Paul Sabatier; Francia
Fil: Silva, Marco. Universidade Federal de Ouro Preto; Brasil
Fil: Firmin, Anne Sophie. Université Paul Sabatier; Francia
Fil: Martínez Dopico, Carmen Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotópica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
Fil: Proietti, Arnaud. Centre de Microcaractérisation Raimond Castaing; Francia
Fil: Amponsah, Prince Ofori. University Of Ghana; Ghana
Fil: Asamoah Sakyi, Patrick. University Of Ghana; Ghana
EGU General Assembly 2021
Vienna
Austria
European Geosciences Union
description The West African Craton (WAC) is one of the major cratons in the Rodinia jigsaw puzzle (~1000?750Ma). In the Rodinian models, the position of West Africa is mainly constrained by the assumptionthat it had been a partner of Amazonia since the Paleoproterozoic. Unfortunately, nopaleomagnetic data are available for these cratons when the Rodina supercontinent is consideredtectonically stable (~1000-750 Ma). Thus, every new reliable paleomagnetic pole for the WestAfrican Craton during the Neoproterozoic times is of paramount importance to constrain itsposition and testing the Rodinia models. In this study we present a combined paleomagnetic andgeochronological investigation for the Manso dyke swarm in the Leo-Man Shield, southern WestAfrica (Ghana). The ~860 Ma emplacement age for the NNW-trending Manso dykes is thus wellconstrainedby two new U-Pb apatite ages of 857.2 ± 8.5 Ma and 855 ± 16 Ma, in agreement withbaddeleyite data. Remanence of these coarse-to-fine grained dolerite dykes is carried by stablesingle to pseudo-single domain (SD-PSD) magnetite. A positive baked-contact test, associated to apositive reversal test (Class-C), support the primary remanence obtained for these dykes (13 sites).Moreover, our new paleomagnetic dataset satisfy all the seven R-criteria (R=7). The ~860 MaManso pole can thus be considered as the first key Tonian paleomagnetic pole for West Africa. Wepropose that the West Africa-Baltica-Amazonia-Congo-São Francisco were associated in a longlivedWABAMGO juxtaposition (~1100?800 Ma).
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Journal
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/173278
Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia; EGU General Assembly 2021; Vienna; Austria; 2021; 1-2
CONICET Digital
CONICET
url http://hdl.handle.net/11336/173278
identifier_str_mv Paleomagnetism of the ~860 Ma Manso dyke swarm, West Africa: implications for the assembly of Rodinia; EGU General Assembly 2021; Vienna; Austria; 2021; 1-2
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://meetingorganizer.copernicus.org/EGU21/EGU21-13336.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Copernicus Publications
publisher.none.fl_str_mv Copernicus Publications
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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score 13.069144

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