Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolites
The origin of zircon grains, and other exotic minerals of typical crustal origin, in mantle-hosted ophiolitic chromitites are hotly debated. We report a population of zircon grains with ages ranging from Cretaceous (99 Ma) to Neoarchean (2750 Ma), separated from massive chromitite bodies hosted in t...
| Autores: | , , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/138079 |
| Acceso en línea: | https://hdl.handle.net/2445/138079 |
| Access Level: | acceso abierto |
| Palabra clave: | Zirconi Geocronologia Ofiolites Geologia submarina Cuba Zirconium Geochronology Ophiolites Submarine geology |
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Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolitesProenza Fernández, Joaquín AntonioGonzález Jiménez, José MaríaGarcía Casco, AntonioBelousova, ElenaGriffin, William L.Talavera, CristinaRojas Agramonte, YamirkaAiglsperger, Thomas HansNavarro Ciurana, DídacPujol Solà, NúriaGervilla Linares, FernandoO'Reilly, Suzanne YvetteJacob, Dorrit E.ZirconiGeocronologiaOfiolitesGeologia submarinaCubaZirconiumGeochronologyOphiolitesSubmarine geologyCubaThe origin of zircon grains, and other exotic minerals of typical crustal origin, in mantle-hosted ophiolitic chromitites are hotly debated. We report a population of zircon grains with ages ranging from Cretaceous (99 Ma) to Neoarchean (2750 Ma), separated from massive chromitite bodies hosted in the mantle section of the supra-subduction (SSZ)-type Mayarí-Baracoa Ophiolitic Belt in eastern Cuba. Most analyzed zircon grains (n = 20, 287 ± 3 Ma to 2750 ± 60 Ma) are older than the early Cretaceous age of the ophiolite body, show negative εHf(t) (−26 to −0.6) and occasional inclusions of quartz, K-feldspar, biotite, and apatite that indicate derivation from a granitic continental crust. In contrast, 5 mainly rounded zircon grains (297 ± 5 Ma to 2126 ± 27 Ma) show positive εHf(t) (+0.7 to +13.5) and occasional apatite inclusions, suggesting their possible crystallization from melts derived from juvenile (mantle) sources. Interestingly, younger zircon grains are mainly euhedral to subhedral crystals, whereas older zircon grains are predominantly rounded grains. A comparison of the ages and Hf isotopic compositions of the zircon grains with those of nearby exposed crustal terranes suggest that chromitite zircon grains are similar to those reported from terranes of Mexico and northern South America. Hence, chromitite zircon grains are interpreted as sedimentary-derived xenocrystic grains that were delivered into the mantle wedge beneath the Greater Antilles intra-oceanic volcanic arc by metasomatic fluids/melts during subduction processes. Thus, continental crust recycling by subduction could explain all populations of old xenocrystic zircon in Cretaceous mantle-hosted chromitites from eastern Cuba ophiolite. We integrate the results of this study with petrological-thermomechanical modeling and existing geodynamic models to propose that ancient zircon xenocrysts, with a wide spectrum of ages and Hf isotopic compositions, can be transferred to the mantle wedge above subducting slabs by cold plumes.Elsevier2019201920182019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion16 p.application/pdfhttps://hdl.handle.net/2445/138079Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1016/j.gsf.2017.12.005Geoscience Frontiers, 2018, vol. 9, num. 6, p. 1921-1936https://doi.org/10.1016/j.gsf.2017.12.005cc-by-nc-nd (c) China University of Geosciences (Beijing) and Peking University, 2018http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1380792026-05-29T05:05:01Z |
| dc.title.none.fl_str_mv |
Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolites |
| title |
Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolites |
| spellingShingle |
Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolites Proenza Fernández, Joaquín Antonio Zirconi Geocronologia Ofiolites Geologia submarina Cuba Zirconium Geochronology Ophiolites Submarine geology Cuba |
| title_short |
Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolites |
| title_full |
Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolites |
| title_fullStr |
Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolites |
| title_full_unstemmed |
Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolites |
| title_sort |
Cold plumes trigger contamination of oceanic mantle wedges with continental crust-derived sediments: Evidence from chromitite zircon grains of eastern Cuban ophiolites |
| dc.creator.none.fl_str_mv |
Proenza Fernández, Joaquín Antonio González Jiménez, José María García Casco, Antonio Belousova, Elena Griffin, William L. Talavera, Cristina Rojas Agramonte, Yamirka Aiglsperger, Thomas Hans Navarro Ciurana, Dídac Pujol Solà, Núria Gervilla Linares, Fernando O'Reilly, Suzanne Yvette Jacob, Dorrit E. |
| author |
Proenza Fernández, Joaquín Antonio |
| author_facet |
Proenza Fernández, Joaquín Antonio González Jiménez, José María García Casco, Antonio Belousova, Elena Griffin, William L. Talavera, Cristina Rojas Agramonte, Yamirka Aiglsperger, Thomas Hans Navarro Ciurana, Dídac Pujol Solà, Núria Gervilla Linares, Fernando O'Reilly, Suzanne Yvette Jacob, Dorrit E. |
| author_role |
author |
| author2 |
González Jiménez, José María García Casco, Antonio Belousova, Elena Griffin, William L. Talavera, Cristina Rojas Agramonte, Yamirka Aiglsperger, Thomas Hans Navarro Ciurana, Dídac Pujol Solà, Núria Gervilla Linares, Fernando O'Reilly, Suzanne Yvette Jacob, Dorrit E. |
| author2_role |
author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Zirconi Geocronologia Ofiolites Geologia submarina Cuba Zirconium Geochronology Ophiolites Submarine geology Cuba |
| topic |
Zirconi Geocronologia Ofiolites Geologia submarina Cuba Zirconium Geochronology Ophiolites Submarine geology Cuba |
| description |
The origin of zircon grains, and other exotic minerals of typical crustal origin, in mantle-hosted ophiolitic chromitites are hotly debated. We report a population of zircon grains with ages ranging from Cretaceous (99 Ma) to Neoarchean (2750 Ma), separated from massive chromitite bodies hosted in the mantle section of the supra-subduction (SSZ)-type Mayarí-Baracoa Ophiolitic Belt in eastern Cuba. Most analyzed zircon grains (n = 20, 287 ± 3 Ma to 2750 ± 60 Ma) are older than the early Cretaceous age of the ophiolite body, show negative εHf(t) (−26 to −0.6) and occasional inclusions of quartz, K-feldspar, biotite, and apatite that indicate derivation from a granitic continental crust. In contrast, 5 mainly rounded zircon grains (297 ± 5 Ma to 2126 ± 27 Ma) show positive εHf(t) (+0.7 to +13.5) and occasional apatite inclusions, suggesting their possible crystallization from melts derived from juvenile (mantle) sources. Interestingly, younger zircon grains are mainly euhedral to subhedral crystals, whereas older zircon grains are predominantly rounded grains. A comparison of the ages and Hf isotopic compositions of the zircon grains with those of nearby exposed crustal terranes suggest that chromitite zircon grains are similar to those reported from terranes of Mexico and northern South America. Hence, chromitite zircon grains are interpreted as sedimentary-derived xenocrystic grains that were delivered into the mantle wedge beneath the Greater Antilles intra-oceanic volcanic arc by metasomatic fluids/melts during subduction processes. Thus, continental crust recycling by subduction could explain all populations of old xenocrystic zircon in Cretaceous mantle-hosted chromitites from eastern Cuba ophiolite. We integrate the results of this study with petrological-thermomechanical modeling and existing geodynamic models to propose that ancient zircon xenocrysts, with a wide spectrum of ages and Hf isotopic compositions, can be transferred to the mantle wedge above subducting slabs by cold plumes. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018 2019 2019 2019 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2445/138079 |
| url |
https://hdl.handle.net/2445/138079 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Reproducció del document publicat a: https://doi.org/10.1016/j.gsf.2017.12.005 Geoscience Frontiers, 2018, vol. 9, num. 6, p. 1921-1936 https://doi.org/10.1016/j.gsf.2017.12.005 |
| dc.rights.none.fl_str_mv |
cc-by-nc-nd (c) China University of Geosciences (Beijing) and Peking University, 2018 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
cc-by-nc-nd (c) China University of Geosciences (Beijing) and Peking University, 2018 http://creativecommons.org/licenses/by-nc-nd/3.0/es |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
16 p. application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
| publisher.none.fl_str_mv |
Elsevier |
| dc.source.none.fl_str_mv |
Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Recercat. Dipósit de la Recerca de Catalunya |
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Recercat. Dipósit de la Recerca de Catalunya |
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