Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths
- Autores
- Gomes Braga, Luisa; Jalowitzki, Tiago; Gervasoni, Fernanda; Freitas Rodrigues, Rodrigo; Mazzucchelli, Maurizio; Giovanardi, Tommaso; Marques Dalla Costa, Marina; Ventura Santos, Roberto; Peres Rocha, Marcelo; Fuck, Reinhardt Adolfo; Rubiano Lorenzoni, Georgina Marianela; Bertotto, Gustavo Walter
- Año de publicación
- 2024
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The destruction of the cratonic root has been documented for multiple cratons worldwide and is characterized by severe lithospheric thinning, extensive extensional deformation, and intense thermal activity. Here, we present detailed petrography accompanied by comprehensive geochemical and isotopic data for peridotites, pyroxenites, and eclogites from the SW margin of the São Francisco Craton that has also been severely thinned. The diamond-bearing Canastra-1 kimberlite represents a Cretaceous intrusion from the Alto Paranaíba Igneous Province and hosts garnet-bearing mantle xenoliths from different mantle sources, revealing a complex history of metasomatism/refertilization related to superimposed tectonic events since the cratonic consolidation. Eclogites (T = 978–982°C; P ~ 4.0 GPa) and pargasite-bearing websterites (T = 875–926°C; P = 2.0–3.0 GPa) represent the shallower and colder cratonic lithosphere. Mantle-derived high-MgO eclogitic clinopyroxenes show a light rare earth element (LREE)-enriched pattern (Ce/YbN = 60.90–93.63) while both clinopyroxene and garnet present high 87Sr/86Sr ratios (0.70842–0.70912) and negative εNd values (−5.6 to −7.3). These features, supported by the reconstructed whole-rock composition, suggest a mafic protolith probably metasomatized by fluid/melt derived from the overlying sedimentary rocks. Pargasite websterites are cumulates from an evolved (SiO2-rich) and hydrated basaltic andesitic magma. These xenoliths are characterized by high concentration of LREE relative to heavy-REE (HREE) in clinopyroxene (Ce/YbN = 10.52–50.61) and pargasite (Ce/YbN = 10.26–57.06), and by the presence of Al-rich orthopyroxene. As observed in eclogites, clinopyroxene and garnet from pargasite websterites display high 87Sr/86Sr ratios (0.70894–0.71094) and strong negative εNd values (−7.2 to −13.3). Trace elements (i.e. Zr, Ti, and Y) in garnets of both rock types indicate the role of a depleted component affected by a metasomatic agent. Although we were unable to date the formation of these rocks or the metasomatic events, we suggest a possible relationship with the consolidation of Gondwana during the Neoproterozoic. Sheared lherzolites, clinopyroxenites, anhydrous websterites, and dunite are deeper fragments from the lithosphere-asthenosphere boundary (LAB: 1191–1290°C; 5.3–5.6 GPa). They have abundant kelyphitic rims around garnet grains, which indicate metasomatism promoted by the percolation of a high-temperature proto-kimberlite melt enriched in Ti, Zr, and Y. The presence of kelyphitic phlogopite with high-Ti-Cr contents reinforces this assumption. LREE-enriched clinopyroxenes (Ce/YbN = 12.06–48.02) confirm the enriched character of the silicate melt responsible for the refertilization process within the cratonic root. The proto-kimberlite metasomatism is further supported by the preferential enrichment of 87Sr/86Sr ratios (0.70560–0.70869) accompanied by positive εNd values (+1.8 to +10.10). Two-point clinopyroxene-garnet Sm–Nd isochrons yielded an average age of 120 ± 5 Ma, representing the kimberlite eruption/emplacement age of the host kimberlite. These deeper LAB xenoliths reveal intense lithospheric thinning triggered by percolation of a high-temperature proto-kimberlite melt since the early stages of Gondwana break-up during the Cretaceous, shortly before the kimberlite emplacement at 120 Ma. Therefore, they provide remarkable evidence of the destruction of the São Francisco Craton through thermal-mechanical erosion that triggered its rejuvenation.
Fil: Gomes Braga, Luisa. Universidade do Brasília; Brasil
Fil: Jalowitzki, Tiago. Universidade do Brasília; Brasil
Fil: Gervasoni, Fernanda. Universidade Federal de Pelotas; Brasil. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Freitas Rodrigues, Rodrigo. Universidade do Brasília; Brasil. Australian National University; Australia
Fil: Mazzucchelli, Maurizio. Università di Modena e Reggio Emilia; Italia
Fil: Giovanardi, Tommaso. Università di Modena e Reggio Emilia; Italia
Fil: Marques Dalla Costa, Marina. Agencia Nacional de Mineração; Brasil
Fil: Ventura Santos, Roberto. Universidade do Brasília; Brasil
Fil: Peres Rocha, Marcelo. Universidade do Brasília; Brasil
Fil: Fuck, Reinhardt Adolfo. Universidade do Brasília; Brasil
Fil: Rubiano Lorenzoni, Georgina Marianela. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina
Fil: Bertotto, Gustavo Walter. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina - Materia
-
Mantle metasomatism
Mantle xenoliths
Mineral chemistry
Sr-Nd isotopes - 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:11336/266341
Ver los metadatos del registro completo
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Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle XenolithsGomes Braga, LuisaJalowitzki, TiagoGervasoni, FernandaFreitas Rodrigues, RodrigoMazzucchelli, MaurizioGiovanardi, TommasoMarques Dalla Costa, MarinaVentura Santos, RobertoPeres Rocha, MarceloFuck, Reinhardt AdolfoRubiano Lorenzoni, Georgina MarianelaBertotto, Gustavo WalterMantle metasomatismMantle xenolithsMineral chemistrySr-Nd isotopeshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The destruction of the cratonic root has been documented for multiple cratons worldwide and is characterized by severe lithospheric thinning, extensive extensional deformation, and intense thermal activity. Here, we present detailed petrography accompanied by comprehensive geochemical and isotopic data for peridotites, pyroxenites, and eclogites from the SW margin of the São Francisco Craton that has also been severely thinned. The diamond-bearing Canastra-1 kimberlite represents a Cretaceous intrusion from the Alto Paranaíba Igneous Province and hosts garnet-bearing mantle xenoliths from different mantle sources, revealing a complex history of metasomatism/refertilization related to superimposed tectonic events since the cratonic consolidation. Eclogites (T = 978–982°C; P ~ 4.0 GPa) and pargasite-bearing websterites (T = 875–926°C; P = 2.0–3.0 GPa) represent the shallower and colder cratonic lithosphere. Mantle-derived high-MgO eclogitic clinopyroxenes show a light rare earth element (LREE)-enriched pattern (Ce/YbN = 60.90–93.63) while both clinopyroxene and garnet present high 87Sr/86Sr ratios (0.70842–0.70912) and negative εNd values (−5.6 to −7.3). These features, supported by the reconstructed whole-rock composition, suggest a mafic protolith probably metasomatized by fluid/melt derived from the overlying sedimentary rocks. Pargasite websterites are cumulates from an evolved (SiO2-rich) and hydrated basaltic andesitic magma. These xenoliths are characterized by high concentration of LREE relative to heavy-REE (HREE) in clinopyroxene (Ce/YbN = 10.52–50.61) and pargasite (Ce/YbN = 10.26–57.06), and by the presence of Al-rich orthopyroxene. As observed in eclogites, clinopyroxene and garnet from pargasite websterites display high 87Sr/86Sr ratios (0.70894–0.71094) and strong negative εNd values (−7.2 to −13.3). Trace elements (i.e. Zr, Ti, and Y) in garnets of both rock types indicate the role of a depleted component affected by a metasomatic agent. Although we were unable to date the formation of these rocks or the metasomatic events, we suggest a possible relationship with the consolidation of Gondwana during the Neoproterozoic. Sheared lherzolites, clinopyroxenites, anhydrous websterites, and dunite are deeper fragments from the lithosphere-asthenosphere boundary (LAB: 1191–1290°C; 5.3–5.6 GPa). They have abundant kelyphitic rims around garnet grains, which indicate metasomatism promoted by the percolation of a high-temperature proto-kimberlite melt enriched in Ti, Zr, and Y. The presence of kelyphitic phlogopite with high-Ti-Cr contents reinforces this assumption. LREE-enriched clinopyroxenes (Ce/YbN = 12.06–48.02) confirm the enriched character of the silicate melt responsible for the refertilization process within the cratonic root. The proto-kimberlite metasomatism is further supported by the preferential enrichment of 87Sr/86Sr ratios (0.70560–0.70869) accompanied by positive εNd values (+1.8 to +10.10). Two-point clinopyroxene-garnet Sm–Nd isochrons yielded an average age of 120 ± 5 Ma, representing the kimberlite eruption/emplacement age of the host kimberlite. These deeper LAB xenoliths reveal intense lithospheric thinning triggered by percolation of a high-temperature proto-kimberlite melt since the early stages of Gondwana break-up during the Cretaceous, shortly before the kimberlite emplacement at 120 Ma. Therefore, they provide remarkable evidence of the destruction of the São Francisco Craton through thermal-mechanical erosion that triggered its rejuvenation.Fil: Gomes Braga, Luisa. Universidade do Brasília; BrasilFil: Jalowitzki, Tiago. Universidade do Brasília; BrasilFil: Gervasoni, Fernanda. Universidade Federal de Pelotas; Brasil. Universidade Federal do Rio Grande do Sul; BrasilFil: Freitas Rodrigues, Rodrigo. Universidade do Brasília; Brasil. Australian National University; AustraliaFil: Mazzucchelli, Maurizio. Università di Modena e Reggio Emilia; ItaliaFil: Giovanardi, Tommaso. Università di Modena e Reggio Emilia; ItaliaFil: Marques Dalla Costa, Marina. Agencia Nacional de Mineração; BrasilFil: Ventura Santos, Roberto. Universidade do Brasília; BrasilFil: Peres Rocha, Marcelo. Universidade do Brasília; BrasilFil: Fuck, Reinhardt Adolfo. Universidade do Brasília; BrasilFil: Rubiano Lorenzoni, Georgina Marianela. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; ArgentinaFil: Bertotto, Gustavo Walter. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; ArgentinaOxford University Press2024-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/266341Gomes Braga, Luisa; Jalowitzki, Tiago; Gervasoni, Fernanda; Freitas Rodrigues, Rodrigo; Mazzucchelli, Maurizio; et al.; Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths; Oxford University Press; Journal Of Petrology; 65; 9; 9-2024; 1-300022-3530CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/petrology/advance-article/doi/10.1093/petrology/egae087/7731763info:eu-repo/semantics/altIdentifier/doi/10.1093/petrology/egae087info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:50:44Zoai:ri.conicet.gov.ar:11336/266341instacron: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 09:50:45.191CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths |
title |
Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths |
spellingShingle |
Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths Gomes Braga, Luisa Mantle metasomatism Mantle xenoliths Mineral chemistry Sr-Nd isotopes |
title_short |
Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths |
title_full |
Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths |
title_fullStr |
Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths |
title_full_unstemmed |
Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths |
title_sort |
Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths |
dc.creator.none.fl_str_mv |
Gomes Braga, Luisa Jalowitzki, Tiago Gervasoni, Fernanda Freitas Rodrigues, Rodrigo Mazzucchelli, Maurizio Giovanardi, Tommaso Marques Dalla Costa, Marina Ventura Santos, Roberto Peres Rocha, Marcelo Fuck, Reinhardt Adolfo Rubiano Lorenzoni, Georgina Marianela Bertotto, Gustavo Walter |
author |
Gomes Braga, Luisa |
author_facet |
Gomes Braga, Luisa Jalowitzki, Tiago Gervasoni, Fernanda Freitas Rodrigues, Rodrigo Mazzucchelli, Maurizio Giovanardi, Tommaso Marques Dalla Costa, Marina Ventura Santos, Roberto Peres Rocha, Marcelo Fuck, Reinhardt Adolfo Rubiano Lorenzoni, Georgina Marianela Bertotto, Gustavo Walter |
author_role |
author |
author2 |
Jalowitzki, Tiago Gervasoni, Fernanda Freitas Rodrigues, Rodrigo Mazzucchelli, Maurizio Giovanardi, Tommaso Marques Dalla Costa, Marina Ventura Santos, Roberto Peres Rocha, Marcelo Fuck, Reinhardt Adolfo Rubiano Lorenzoni, Georgina Marianela Bertotto, Gustavo Walter |
author2_role |
author author author author author author author author author author author |
dc.subject.none.fl_str_mv |
Mantle metasomatism Mantle xenoliths Mineral chemistry Sr-Nd isotopes |
topic |
Mantle metasomatism Mantle xenoliths Mineral chemistry Sr-Nd isotopes |
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 destruction of the cratonic root has been documented for multiple cratons worldwide and is characterized by severe lithospheric thinning, extensive extensional deformation, and intense thermal activity. Here, we present detailed petrography accompanied by comprehensive geochemical and isotopic data for peridotites, pyroxenites, and eclogites from the SW margin of the São Francisco Craton that has also been severely thinned. The diamond-bearing Canastra-1 kimberlite represents a Cretaceous intrusion from the Alto Paranaíba Igneous Province and hosts garnet-bearing mantle xenoliths from different mantle sources, revealing a complex history of metasomatism/refertilization related to superimposed tectonic events since the cratonic consolidation. Eclogites (T = 978–982°C; P ~ 4.0 GPa) and pargasite-bearing websterites (T = 875–926°C; P = 2.0–3.0 GPa) represent the shallower and colder cratonic lithosphere. Mantle-derived high-MgO eclogitic clinopyroxenes show a light rare earth element (LREE)-enriched pattern (Ce/YbN = 60.90–93.63) while both clinopyroxene and garnet present high 87Sr/86Sr ratios (0.70842–0.70912) and negative εNd values (−5.6 to −7.3). These features, supported by the reconstructed whole-rock composition, suggest a mafic protolith probably metasomatized by fluid/melt derived from the overlying sedimentary rocks. Pargasite websterites are cumulates from an evolved (SiO2-rich) and hydrated basaltic andesitic magma. These xenoliths are characterized by high concentration of LREE relative to heavy-REE (HREE) in clinopyroxene (Ce/YbN = 10.52–50.61) and pargasite (Ce/YbN = 10.26–57.06), and by the presence of Al-rich orthopyroxene. As observed in eclogites, clinopyroxene and garnet from pargasite websterites display high 87Sr/86Sr ratios (0.70894–0.71094) and strong negative εNd values (−7.2 to −13.3). Trace elements (i.e. Zr, Ti, and Y) in garnets of both rock types indicate the role of a depleted component affected by a metasomatic agent. Although we were unable to date the formation of these rocks or the metasomatic events, we suggest a possible relationship with the consolidation of Gondwana during the Neoproterozoic. Sheared lherzolites, clinopyroxenites, anhydrous websterites, and dunite are deeper fragments from the lithosphere-asthenosphere boundary (LAB: 1191–1290°C; 5.3–5.6 GPa). They have abundant kelyphitic rims around garnet grains, which indicate metasomatism promoted by the percolation of a high-temperature proto-kimberlite melt enriched in Ti, Zr, and Y. The presence of kelyphitic phlogopite with high-Ti-Cr contents reinforces this assumption. LREE-enriched clinopyroxenes (Ce/YbN = 12.06–48.02) confirm the enriched character of the silicate melt responsible for the refertilization process within the cratonic root. The proto-kimberlite metasomatism is further supported by the preferential enrichment of 87Sr/86Sr ratios (0.70560–0.70869) accompanied by positive εNd values (+1.8 to +10.10). Two-point clinopyroxene-garnet Sm–Nd isochrons yielded an average age of 120 ± 5 Ma, representing the kimberlite eruption/emplacement age of the host kimberlite. These deeper LAB xenoliths reveal intense lithospheric thinning triggered by percolation of a high-temperature proto-kimberlite melt since the early stages of Gondwana break-up during the Cretaceous, shortly before the kimberlite emplacement at 120 Ma. Therefore, they provide remarkable evidence of the destruction of the São Francisco Craton through thermal-mechanical erosion that triggered its rejuvenation. Fil: Gomes Braga, Luisa. Universidade do Brasília; Brasil Fil: Jalowitzki, Tiago. Universidade do Brasília; Brasil Fil: Gervasoni, Fernanda. Universidade Federal de Pelotas; Brasil. Universidade Federal do Rio Grande do Sul; Brasil Fil: Freitas Rodrigues, Rodrigo. Universidade do Brasília; Brasil. Australian National University; Australia Fil: Mazzucchelli, Maurizio. Università di Modena e Reggio Emilia; Italia Fil: Giovanardi, Tommaso. Università di Modena e Reggio Emilia; Italia Fil: Marques Dalla Costa, Marina. Agencia Nacional de Mineração; Brasil Fil: Ventura Santos, Roberto. Universidade do Brasília; Brasil Fil: Peres Rocha, Marcelo. Universidade do Brasília; Brasil Fil: Fuck, Reinhardt Adolfo. Universidade do Brasília; Brasil Fil: Rubiano Lorenzoni, Georgina Marianela. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina Fil: Bertotto, Gustavo Walter. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina |
description |
The destruction of the cratonic root has been documented for multiple cratons worldwide and is characterized by severe lithospheric thinning, extensive extensional deformation, and intense thermal activity. Here, we present detailed petrography accompanied by comprehensive geochemical and isotopic data for peridotites, pyroxenites, and eclogites from the SW margin of the São Francisco Craton that has also been severely thinned. The diamond-bearing Canastra-1 kimberlite represents a Cretaceous intrusion from the Alto Paranaíba Igneous Province and hosts garnet-bearing mantle xenoliths from different mantle sources, revealing a complex history of metasomatism/refertilization related to superimposed tectonic events since the cratonic consolidation. Eclogites (T = 978–982°C; P ~ 4.0 GPa) and pargasite-bearing websterites (T = 875–926°C; P = 2.0–3.0 GPa) represent the shallower and colder cratonic lithosphere. Mantle-derived high-MgO eclogitic clinopyroxenes show a light rare earth element (LREE)-enriched pattern (Ce/YbN = 60.90–93.63) while both clinopyroxene and garnet present high 87Sr/86Sr ratios (0.70842–0.70912) and negative εNd values (−5.6 to −7.3). These features, supported by the reconstructed whole-rock composition, suggest a mafic protolith probably metasomatized by fluid/melt derived from the overlying sedimentary rocks. Pargasite websterites are cumulates from an evolved (SiO2-rich) and hydrated basaltic andesitic magma. These xenoliths are characterized by high concentration of LREE relative to heavy-REE (HREE) in clinopyroxene (Ce/YbN = 10.52–50.61) and pargasite (Ce/YbN = 10.26–57.06), and by the presence of Al-rich orthopyroxene. As observed in eclogites, clinopyroxene and garnet from pargasite websterites display high 87Sr/86Sr ratios (0.70894–0.71094) and strong negative εNd values (−7.2 to −13.3). Trace elements (i.e. Zr, Ti, and Y) in garnets of both rock types indicate the role of a depleted component affected by a metasomatic agent. Although we were unable to date the formation of these rocks or the metasomatic events, we suggest a possible relationship with the consolidation of Gondwana during the Neoproterozoic. Sheared lherzolites, clinopyroxenites, anhydrous websterites, and dunite are deeper fragments from the lithosphere-asthenosphere boundary (LAB: 1191–1290°C; 5.3–5.6 GPa). They have abundant kelyphitic rims around garnet grains, which indicate metasomatism promoted by the percolation of a high-temperature proto-kimberlite melt enriched in Ti, Zr, and Y. The presence of kelyphitic phlogopite with high-Ti-Cr contents reinforces this assumption. LREE-enriched clinopyroxenes (Ce/YbN = 12.06–48.02) confirm the enriched character of the silicate melt responsible for the refertilization process within the cratonic root. The proto-kimberlite metasomatism is further supported by the preferential enrichment of 87Sr/86Sr ratios (0.70560–0.70869) accompanied by positive εNd values (+1.8 to +10.10). Two-point clinopyroxene-garnet Sm–Nd isochrons yielded an average age of 120 ± 5 Ma, representing the kimberlite eruption/emplacement age of the host kimberlite. These deeper LAB xenoliths reveal intense lithospheric thinning triggered by percolation of a high-temperature proto-kimberlite melt since the early stages of Gondwana break-up during the Cretaceous, shortly before the kimberlite emplacement at 120 Ma. Therefore, they provide remarkable evidence of the destruction of the São Francisco Craton through thermal-mechanical erosion that triggered its rejuvenation. |
publishDate |
2024 |
dc.date.none.fl_str_mv |
2024-09 |
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/11336/266341 Gomes Braga, Luisa; Jalowitzki, Tiago; Gervasoni, Fernanda; Freitas Rodrigues, Rodrigo; Mazzucchelli, Maurizio; et al.; Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths; Oxford University Press; Journal Of Petrology; 65; 9; 9-2024; 1-30 0022-3530 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/266341 |
identifier_str_mv |
Gomes Braga, Luisa; Jalowitzki, Tiago; Gervasoni, Fernanda; Freitas Rodrigues, Rodrigo; Mazzucchelli, Maurizio; et al.; Destruction of the Lithosphere beneath the SW Margin of the São Francisco Craton Evidenced by Refertilized and Deformed Mantle Xenoliths; Oxford University Press; Journal Of Petrology; 65; 9; 9-2024; 1-30 0022-3530 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://academic.oup.com/petrology/advance-article/doi/10.1093/petrology/egae087/7731763 info:eu-repo/semantics/altIdentifier/doi/10.1093/petrology/egae087 |
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 application/pdf |
dc.publisher.none.fl_str_mv |
Oxford University Press |
publisher.none.fl_str_mv |
Oxford University Press |
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) |
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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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1842269050897432576 |
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13.13397 |