West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana)
- Autores
- Antonio, Paul Yves Jean; Baratoux, Lenka; Ferreira Da Trindade, Ricardo Ivan; Rousse, Sonia; Ayite, Anani; Lana, Cristiano; Macouin, Mélina; Adu, Emmanuel Williams Kobby; Sanchez, Caroline; Silva, Marco Antônio Leandro; Firmin, Anne Sophie; Martínez Dopico, Carmen Irene; Proietti, Arnaud; Amponsah, Prince Ofori; Sakyi, Patrick Asamoah
- Año de publicación
- 2021
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The paleogeography of the Meso-Neoproterozoic Rodinia supercontinent remains debated partly because many stable cratons still lack reliable paleomagnetic data for this period. A new geochronological and paleomagnetic study was conducted on the NNW-trending Manso dyke swarm of southern West Africa (Ghana) to clarify the position of this unconstrained continent in Rodinia. Two U–Pb apatite ages of 857.2 ± 8.5 Ma and 855 ± 16 Ma agree with one previous baddeleyite age, indicating a ~ 860 Ma emplacement age for the Manso dykes. A characteristic remanent magnetization (ChRM) was isolated in stable single to pseudo-single domain (SD-PSD) magnetite. Well constrained site mean directions obtained for 13 dykes lead to a mean direction for the Manso dyke swarm of Dm = 181.9°, Im = −77.2° (N = 13, α95 = 7.6°, k = 30.6), yielding a paleomagnetic pole at 177.6°E, 28.3°S, (A95 = 12.7 °K = 11.6). Two directional clusters of opposite inclination pass a reversal test (C-class) and the primary origin is supported by a positive baked contact test, satisfying all the seven R-criteria to provide the first West African Tonian key paleomagnetic pole. This key pole indicates a high latitude for the West Africa Craton during the emplacement of the ~860 Manso dykes. A compilation of reliable paleomagnetic poles for West Africa, Baltica, Amazonia and Congo-São Francisco cratons suggests that these cratons were together between ~1200 and 800 Ma in a long-lived WABAMGO configuration. We suggest that the collision of this block with Laurentia along the Grenvillian-Sunsás orogens closed the external Nuna Ocean and formed Rodinia by extroversion.
Fil: Antonio, Paul Yves Jean. Universidade de Sao Paulo; Brasil
Fil: Baratoux, Lenka. Université Paul Sabatier; Francia
Fil: Ferreira Da Trindade, Ricardo Ivan. Universidade de Sao Paulo; Brasil
Fil: Rousse, Sonia. Université Paul Sabatier; Francia
Fil: Ayite, Anani. Ghana Geological Survey; Ghana
Fil: Lana, Cristiano. Universidade Federal de Ouro Preto; Brasil
Fil: Macouin, Mélina. Université Paul Sabatier; Francia
Fil: Adu, Emmanuel Williams Kobby. University Of Ghana; Ghana
Fil: Sanchez, Caroline. Centre D'etudes de Saclay; Francia
Fil: Silva, Marco Antônio Leandro. 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: Sakyi, Patrick Asamoah. University Of Ghana; Ghana - Materia
-
NEOPROTEROZOIC
PALEOMAGNETISM
RODINIA
TONIAN
WEST AFRICA - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/173288
Ver los metadatos del registro completo
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West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana)Antonio, Paul Yves JeanBaratoux, LenkaFerreira Da Trindade, Ricardo IvanRousse, SoniaAyite, AnaniLana, CristianoMacouin, MélinaAdu, Emmanuel Williams KobbySanchez, CarolineSilva, Marco Antônio LeandroFirmin, Anne SophieMartínez Dopico, Carmen IreneProietti, ArnaudAmponsah, Prince OforiSakyi, Patrick AsamoahNEOPROTEROZOICPALEOMAGNETISMRODINIATONIANWEST AFRICAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The paleogeography of the Meso-Neoproterozoic Rodinia supercontinent remains debated partly because many stable cratons still lack reliable paleomagnetic data for this period. A new geochronological and paleomagnetic study was conducted on the NNW-trending Manso dyke swarm of southern West Africa (Ghana) to clarify the position of this unconstrained continent in Rodinia. Two U–Pb apatite ages of 857.2 ± 8.5 Ma and 855 ± 16 Ma agree with one previous baddeleyite age, indicating a ~ 860 Ma emplacement age for the Manso dykes. A characteristic remanent magnetization (ChRM) was isolated in stable single to pseudo-single domain (SD-PSD) magnetite. Well constrained site mean directions obtained for 13 dykes lead to a mean direction for the Manso dyke swarm of Dm = 181.9°, Im = −77.2° (N = 13, α95 = 7.6°, k = 30.6), yielding a paleomagnetic pole at 177.6°E, 28.3°S, (A95 = 12.7 °K = 11.6). Two directional clusters of opposite inclination pass a reversal test (C-class) and the primary origin is supported by a positive baked contact test, satisfying all the seven R-criteria to provide the first West African Tonian key paleomagnetic pole. This key pole indicates a high latitude for the West Africa Craton during the emplacement of the ~860 Manso dykes. A compilation of reliable paleomagnetic poles for West Africa, Baltica, Amazonia and Congo-São Francisco cratons suggests that these cratons were together between ~1200 and 800 Ma in a long-lived WABAMGO configuration. We suggest that the collision of this block with Laurentia along the Grenvillian-Sunsás orogens closed the external Nuna Ocean and formed Rodinia by extroversion.Fil: Antonio, Paul Yves Jean. Universidade de Sao Paulo; BrasilFil: Baratoux, Lenka. Université Paul Sabatier; FranciaFil: Ferreira Da Trindade, Ricardo Ivan. Universidade de Sao Paulo; BrasilFil: Rousse, Sonia. Université Paul Sabatier; FranciaFil: Ayite, Anani. Ghana Geological Survey; GhanaFil: Lana, Cristiano. Universidade Federal de Ouro Preto; BrasilFil: Macouin, Mélina. Université Paul Sabatier; FranciaFil: Adu, Emmanuel Williams Kobby. University Of Ghana; GhanaFil: Sanchez, Caroline. Centre D'etudes de Saclay; FranciaFil: Silva, Marco Antônio Leandro. 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: Sakyi, Patrick Asamoah. University Of Ghana; GhanaElsevier Science2021-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/173288Antonio, Paul Yves Jean; Baratoux, Lenka; Ferreira Da Trindade, Ricardo Ivan; Rousse, Sonia; Ayite, Anani; et al.; West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana); Elsevier Science; Gondwana Research; 94; 6-2021; 28-431342-937XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S1342937X2100071Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.gr.2021.02.010info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:28:56Zoai:ri.conicet.gov.ar:11336/173288instacron: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 10:28:56.762CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana) |
| title |
West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana) |
| spellingShingle |
West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana) Antonio, Paul Yves Jean NEOPROTEROZOIC PALEOMAGNETISM RODINIA TONIAN WEST AFRICA |
| title_short |
West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana) |
| title_full |
West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana) |
| title_fullStr |
West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana) |
| title_full_unstemmed |
West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana) |
| title_sort |
West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana) |
| dc.creator.none.fl_str_mv |
Antonio, Paul Yves Jean Baratoux, Lenka Ferreira Da Trindade, Ricardo Ivan Rousse, Sonia Ayite, Anani Lana, Cristiano Macouin, Mélina Adu, Emmanuel Williams Kobby Sanchez, Caroline Silva, Marco Antônio Leandro Firmin, Anne Sophie Martínez Dopico, Carmen Irene Proietti, Arnaud Amponsah, Prince Ofori Sakyi, Patrick Asamoah |
| author |
Antonio, Paul Yves Jean |
| author_facet |
Antonio, Paul Yves Jean Baratoux, Lenka Ferreira Da Trindade, Ricardo Ivan Rousse, Sonia Ayite, Anani Lana, Cristiano Macouin, Mélina Adu, Emmanuel Williams Kobby Sanchez, Caroline Silva, Marco Antônio Leandro Firmin, Anne Sophie Martínez Dopico, Carmen Irene Proietti, Arnaud Amponsah, Prince Ofori Sakyi, Patrick Asamoah |
| author_role |
author |
| author2 |
Baratoux, Lenka Ferreira Da Trindade, Ricardo Ivan Rousse, Sonia Ayite, Anani Lana, Cristiano Macouin, Mélina Adu, Emmanuel Williams Kobby Sanchez, Caroline Silva, Marco Antônio Leandro Firmin, Anne Sophie Martínez Dopico, Carmen Irene Proietti, Arnaud Amponsah, Prince Ofori Sakyi, Patrick Asamoah |
| author2_role |
author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
NEOPROTEROZOIC PALEOMAGNETISM RODINIA TONIAN WEST AFRICA |
| topic |
NEOPROTEROZOIC PALEOMAGNETISM RODINIA TONIAN WEST AFRICA |
| 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 paleogeography of the Meso-Neoproterozoic Rodinia supercontinent remains debated partly because many stable cratons still lack reliable paleomagnetic data for this period. A new geochronological and paleomagnetic study was conducted on the NNW-trending Manso dyke swarm of southern West Africa (Ghana) to clarify the position of this unconstrained continent in Rodinia. Two U–Pb apatite ages of 857.2 ± 8.5 Ma and 855 ± 16 Ma agree with one previous baddeleyite age, indicating a ~ 860 Ma emplacement age for the Manso dykes. A characteristic remanent magnetization (ChRM) was isolated in stable single to pseudo-single domain (SD-PSD) magnetite. Well constrained site mean directions obtained for 13 dykes lead to a mean direction for the Manso dyke swarm of Dm = 181.9°, Im = −77.2° (N = 13, α95 = 7.6°, k = 30.6), yielding a paleomagnetic pole at 177.6°E, 28.3°S, (A95 = 12.7 °K = 11.6). Two directional clusters of opposite inclination pass a reversal test (C-class) and the primary origin is supported by a positive baked contact test, satisfying all the seven R-criteria to provide the first West African Tonian key paleomagnetic pole. This key pole indicates a high latitude for the West Africa Craton during the emplacement of the ~860 Manso dykes. A compilation of reliable paleomagnetic poles for West Africa, Baltica, Amazonia and Congo-São Francisco cratons suggests that these cratons were together between ~1200 and 800 Ma in a long-lived WABAMGO configuration. We suggest that the collision of this block with Laurentia along the Grenvillian-Sunsás orogens closed the external Nuna Ocean and formed Rodinia by extroversion. Fil: Antonio, Paul Yves Jean. Universidade de Sao Paulo; Brasil Fil: Baratoux, Lenka. Université Paul Sabatier; Francia Fil: Ferreira Da Trindade, Ricardo Ivan. Universidade de Sao Paulo; Brasil Fil: Rousse, Sonia. Université Paul Sabatier; Francia Fil: Ayite, Anani. Ghana Geological Survey; Ghana Fil: Lana, Cristiano. Universidade Federal de Ouro Preto; Brasil Fil: Macouin, Mélina. Université Paul Sabatier; Francia Fil: Adu, Emmanuel Williams Kobby. University Of Ghana; Ghana Fil: Sanchez, Caroline. Centre D'etudes de Saclay; Francia Fil: Silva, Marco Antônio Leandro. 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: Sakyi, Patrick Asamoah. University Of Ghana; Ghana |
| description |
The paleogeography of the Meso-Neoproterozoic Rodinia supercontinent remains debated partly because many stable cratons still lack reliable paleomagnetic data for this period. A new geochronological and paleomagnetic study was conducted on the NNW-trending Manso dyke swarm of southern West Africa (Ghana) to clarify the position of this unconstrained continent in Rodinia. Two U–Pb apatite ages of 857.2 ± 8.5 Ma and 855 ± 16 Ma agree with one previous baddeleyite age, indicating a ~ 860 Ma emplacement age for the Manso dykes. A characteristic remanent magnetization (ChRM) was isolated in stable single to pseudo-single domain (SD-PSD) magnetite. Well constrained site mean directions obtained for 13 dykes lead to a mean direction for the Manso dyke swarm of Dm = 181.9°, Im = −77.2° (N = 13, α95 = 7.6°, k = 30.6), yielding a paleomagnetic pole at 177.6°E, 28.3°S, (A95 = 12.7 °K = 11.6). Two directional clusters of opposite inclination pass a reversal test (C-class) and the primary origin is supported by a positive baked contact test, satisfying all the seven R-criteria to provide the first West African Tonian key paleomagnetic pole. This key pole indicates a high latitude for the West Africa Craton during the emplacement of the ~860 Manso dykes. A compilation of reliable paleomagnetic poles for West Africa, Baltica, Amazonia and Congo-São Francisco cratons suggests that these cratons were together between ~1200 and 800 Ma in a long-lived WABAMGO configuration. We suggest that the collision of this block with Laurentia along the Grenvillian-Sunsás orogens closed the external Nuna Ocean and formed Rodinia by extroversion. |
| publishDate |
2021 |
| dc.date.none.fl_str_mv |
2021-06 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/173288 Antonio, Paul Yves Jean; Baratoux, Lenka; Ferreira Da Trindade, Ricardo Ivan; Rousse, Sonia; Ayite, Anani; et al.; West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana); Elsevier Science; Gondwana Research; 94; 6-2021; 28-43 1342-937X CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/173288 |
| identifier_str_mv |
Antonio, Paul Yves Jean; Baratoux, Lenka; Ferreira Da Trindade, Ricardo Ivan; Rousse, Sonia; Ayite, Anani; et al.; West Africa in Rodinia: High quality paleomagnetic pole from the ~ 860 Ma Manso dyke swarm (Ghana); Elsevier Science; Gondwana Research; 94; 6-2021; 28-43 1342-937X CONICET Digital CONICET |
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eng |
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eng |
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Elsevier Science |
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