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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/173278
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oai:ri.conicet.gov.ar:11336/173278 |
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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 Técnicas2025-09-03T09:55:59Zoai: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:34982025-09-03 09:55:59.443CONICET 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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1842269375700140032 |
score |
13.13397 |