Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano-Pan-African Orogeny
Resumen:
U-Pb and Hf zircon (sensitive high-resolution ion microprobe -SHRIMP- and laser ablation-inductively coupled plasma-mass spectrometry -LA-ICP-MS-), Ar/Ar hornblende and muscovite, and Rb-Sr whole rock-muscovite isochron data from the mylonites of the Sarandí del Yí Shear Zone, Uruguay, were obtained in order to assess the tectonothermal evolution of this crustal-scale structure. Integration of these results with available kinematic, structural, and microstructural data of the shear zone as well as with geochronological data from the adjacent blocks allowed to constrain the onset of deformation along the shear zone at 630-625 Ma during the collision of the Nico Pérez Terrane and the Río de la Plata Craton. The shear zone underwent dextral shearing up to 596 Ma under upper to middle amphibolite facies conditions, which was succeeded by sinistral shearing under lower amphibolite to upper greenschist facies conditions until at least 584 Ma. After emplacement of the Cerro Caperuza granite at 570 Ma, the shear zone underwent only cataclastic deformation between the late Ediacaran and the Cambrian. The Sarandí del Yí Shear Zone is thus related to the syncollisional to postcollisional evolution of the amalgamation of the Río de la Plata Craton and the Nico Pérez Terrane. Furthermore, the obtained data reveal that strain partitioning and localization with time, magmatism emplacement, and fluid circulation are key processes affecting the isotopic systems in mylonitic belts, revealing the complexity in assessing the age of deformation of long-lived shear zones
| 2016 | |
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Argon lasers Binary alloys Deformation Geochronology Inductively coupled plasma mass spectrometry Laser ablation Lead alloys Metals Mica Rubidium alloys Shearing Silicate minerals Strontium alloys Tectonics Timing circuits Uranium alloys Zircon Amphibolite facies Cataclastic deformation Crustal-scale structure Fluid circulation Isotopic systems Sensitive high-resolution ion microprobe Strain partitioning Shearing machines age determination deformation emplacement geochronology Gondwana Pan African orogeny Proterozoic Shear zone Strain partitioning Tectonic evolution Thermal evolution Uruguay |
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| Inglés | |
| Universidad de la República | |
| COLIBRI | |
| https://hdl.handle.net/20.500.12008/22041 | |
| Acceso abierto | |
| Licencia Creative Commons Atribución – No Comercial – Sin Derivadas (CC –BY-NC-ND 4.0) |
| _version_ | 1807522779972501504 |
|---|---|
| author | Oriolo, S. |
| author2 | Oyhantçabal Cironi, Pedro Bernardo Wemmer, K. Basei, M. A. S. Benowitz, J. Pfänder, J. Hannich, F. Siegesmund, S. |
| author2_role | author author author author author author author |
| author_facet | Oriolo, S. Oyhantçabal Cironi, Pedro Bernardo Wemmer, K. Basei, M. A. S. Benowitz, J. Pfänder, J. Hannich, F. Siegesmund, S. |
| author_role | author |
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| collection | COLIBRI |
| dc.contributor.filiacion.es.fl_str_mv | Oyhantçabal Cironi, Pedro Bernardo. Universidad de la República (Uruguay). Facultad de Ciencias. Departamento de Geología |
| dc.creator.none.fl_str_mv | Oriolo, S. Oyhantçabal Cironi, Pedro Bernardo Wemmer, K. Basei, M. A. S. Benowitz, J. Pfänder, J. Hannich, F. Siegesmund, S. |
| dc.date.accessioned.none.fl_str_mv | 2019-10-02T22:12:00Z |
| dc.date.available.none.fl_str_mv | 2019-10-02T22:12:00Z |
| dc.date.issued.es.fl_str_mv | 2016 |
| dc.date.submitted.es.fl_str_mv | 20190930 |
| dc.description.abstract.none.fl_txt_mv | U-Pb and Hf zircon (sensitive high-resolution ion microprobe -SHRIMP- and laser ablation-inductively coupled plasma-mass spectrometry -LA-ICP-MS-), Ar/Ar hornblende and muscovite, and Rb-Sr whole rock-muscovite isochron data from the mylonites of the Sarandí del Yí Shear Zone, Uruguay, were obtained in order to assess the tectonothermal evolution of this crustal-scale structure. Integration of these results with available kinematic, structural, and microstructural data of the shear zone as well as with geochronological data from the adjacent blocks allowed to constrain the onset of deformation along the shear zone at 630-625 Ma during the collision of the Nico Pérez Terrane and the Río de la Plata Craton. The shear zone underwent dextral shearing up to 596 Ma under upper to middle amphibolite facies conditions, which was succeeded by sinistral shearing under lower amphibolite to upper greenschist facies conditions until at least 584 Ma. After emplacement of the Cerro Caperuza granite at 570 Ma, the shear zone underwent only cataclastic deformation between the late Ediacaran and the Cambrian. The Sarandí del Yí Shear Zone is thus related to the syncollisional to postcollisional evolution of the amalgamation of the Río de la Plata Craton and the Nico Pérez Terrane. Furthermore, the obtained data reveal that strain partitioning and localization with time, magmatism emplacement, and fluid circulation are key processes affecting the isotopic systems in mylonitic belts, revealing the complexity in assessing the age of deformation of long-lived shear zones |
| dc.format.mimetype.es.fl_str_mv | application/pdf |
| dc.identifier.citation.es.fl_str_mv | Oriolo, S., et al., Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: Implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano‐Pan‐African Orogeny, Tectonics, 2016, 35, 754– 771, doi:10.1002/2015TC004052. |
| dc.identifier.doi.es.fl_str_mv | 10.1002/2015TC004052 |
| dc.identifier.issn.es.fl_str_mv | 1944-9194 |
| dc.identifier.uri.none.fl_str_mv | https://hdl.handle.net/20.500.12008/22041 |
| dc.language.iso.none.fl_str_mv | en eng |
| dc.publisher.es.fl_str_mv | Blackwell Publishing Ltd |
| dc.relation.ispartof.es.fl_str_mv | Tectonics, 2016, 35 (3), 754-771 |
| dc.rights.license.none.fl_str_mv | Licencia Creative Commons Atribución – No Comercial – Sin Derivadas (CC –BY-NC-ND 4.0) |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.source.none.fl_str_mv | reponame:COLIBRI instname:Universidad de la República instacron:Universidad de la República |
| dc.subject.es.fl_str_mv | Argon lasers Binary alloys Deformation Geochronology Inductively coupled plasma mass spectrometry Laser ablation Lead alloys Metals Mica Rubidium alloys Shearing Silicate minerals Strontium alloys Tectonics Timing circuits Uranium alloys Zircon Amphibolite facies Cataclastic deformation Crustal-scale structure Fluid circulation Isotopic systems Sensitive high-resolution ion microprobe Strain partitioning Shearing machines age determination deformation emplacement geochronology Gondwana Pan African orogeny Proterozoic Shear zone Strain partitioning Tectonic evolution Thermal evolution Uruguay |
| dc.title.none.fl_str_mv | Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano-Pan-African Orogeny |
| dc.type.es.fl_str_mv | Artículo |
| dc.type.none.fl_str_mv | info:eu-repo/semantics/article |
| dc.type.version.none.fl_str_mv | info:eu-repo/semantics/publishedVersion |
| description | U-Pb and Hf zircon (sensitive high-resolution ion microprobe -SHRIMP- and laser ablation-inductively coupled plasma-mass spectrometry -LA-ICP-MS-), Ar/Ar hornblende and muscovite, and Rb-Sr whole rock-muscovite isochron data from the mylonites of the Sarandí del Yí Shear Zone, Uruguay, were obtained in order to assess the tectonothermal evolution of this crustal-scale structure. Integration of these results with available kinematic, structural, and microstructural data of the shear zone as well as with geochronological data from the adjacent blocks allowed to constrain the onset of deformation along the shear zone at 630-625 Ma during the collision of the Nico Pérez Terrane and the Río de la Plata Craton. The shear zone underwent dextral shearing up to 596 Ma under upper to middle amphibolite facies conditions, which was succeeded by sinistral shearing under lower amphibolite to upper greenschist facies conditions until at least 584 Ma. After emplacement of the Cerro Caperuza granite at 570 Ma, the shear zone underwent only cataclastic deformation between the late Ediacaran and the Cambrian. The Sarandí del Yí Shear Zone is thus related to the syncollisional to postcollisional evolution of the amalgamation of the Río de la Plata Craton and the Nico Pérez Terrane. Furthermore, the obtained data reveal that strain partitioning and localization with time, magmatism emplacement, and fluid circulation are key processes affecting the isotopic systems in mylonitic belts, revealing the complexity in assessing the age of deformation of long-lived shear zones |
| eu_rights_str_mv | openAccess |
| format | article |
| id | COLIBRI_0ceeea3cde2e9e4d02f02bfa6b512caf |
| identifier_str_mv | Oriolo, S., et al., Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: Implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano‐Pan‐African Orogeny, Tectonics, 2016, 35, 754– 771, doi:10.1002/2015TC004052. 1944-9194 10.1002/2015TC004052 |
| instacron_str | Universidad de la República |
| institution | Universidad de la República |
| instname_str | Universidad de la República |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | COLIBRI |
| network_name_str | COLIBRI |
| oai_identifier_str | oai:colibri.udelar.edu.uy:20.500.12008/22041 |
| publishDate | 2016 |
| reponame_str | COLIBRI |
| repository.mail.fl_str_mv | mabel.seroubian@seciu.edu.uy |
| repository.name.fl_str_mv | COLIBRI - Universidad de la República |
| repository_id_str | 4771 |
| rights_invalid_str_mv | Licencia Creative Commons Atribución – No Comercial – Sin Derivadas (CC –BY-NC-ND 4.0) |
| spelling | Oyhantçabal Cironi, Pedro Bernardo. Universidad de la República (Uruguay). Facultad de Ciencias. Departamento de Geología2019-10-02T22:12:00Z2019-10-02T22:12:00Z201620190930Oriolo, S., et al., Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: Implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano‐Pan‐African Orogeny, Tectonics, 2016, 35, 754– 771, doi:10.1002/2015TC004052.1944-9194https://hdl.handle.net/20.500.12008/2204110.1002/2015TC004052U-Pb and Hf zircon (sensitive high-resolution ion microprobe -SHRIMP- and laser ablation-inductively coupled plasma-mass spectrometry -LA-ICP-MS-), Ar/Ar hornblende and muscovite, and Rb-Sr whole rock-muscovite isochron data from the mylonites of the Sarandí del Yí Shear Zone, Uruguay, were obtained in order to assess the tectonothermal evolution of this crustal-scale structure. Integration of these results with available kinematic, structural, and microstructural data of the shear zone as well as with geochronological data from the adjacent blocks allowed to constrain the onset of deformation along the shear zone at 630-625 Ma during the collision of the Nico Pérez Terrane and the Río de la Plata Craton. The shear zone underwent dextral shearing up to 596 Ma under upper to middle amphibolite facies conditions, which was succeeded by sinistral shearing under lower amphibolite to upper greenschist facies conditions until at least 584 Ma. After emplacement of the Cerro Caperuza granite at 570 Ma, the shear zone underwent only cataclastic deformation between the late Ediacaran and the Cambrian. The Sarandí del Yí Shear Zone is thus related to the syncollisional to postcollisional evolution of the amalgamation of the Río de la Plata Craton and the Nico Pérez Terrane. Furthermore, the obtained data reveal that strain partitioning and localization with time, magmatism emplacement, and fluid circulation are key processes affecting the isotopic systems in mylonitic belts, revealing the complexity in assessing the age of deformation of long-lived shear zonesMade available in DSpace on 2019-10-02T22:12:00Z (GMT). No. of bitstreams: 5 1010022015TC004052.pdf: 9543546 bytes, checksum: 7c03de23332466223077bc6d652d257d (MD5) license_text: 38300 bytes, checksum: 098d76773c7b7afafb04cabc04ea8a56 (MD5) license_url: 47 bytes, checksum: 966d4a1cc97b2c4389b5142dd97d3c7f (MD5) license_rdf: 9754 bytes, checksum: ffcba5f515f45166c8d3bb6aa02e3123 (MD5) license.txt: 4194 bytes, checksum: 7f2e2c17ef6585de66da58d1bfa8b5e1 (MD5) Previous issue date: 2016application/pdfenengBlackwell Publishing LtdTectonics, 2016, 35 (3), 754-771Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad De La República. (Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución – No Comercial – Sin Derivadas (CC –BY-NC-ND 4.0)Argon lasersBinary alloysDeformationGeochronologyInductively coupled plasma mass spectrometryLaser ablationLead alloysMetalsMicaRubidium alloysShearingSilicate mineralsStrontium alloysTectonicsTiming circuitsUranium alloysZirconAmphibolite faciesCataclastic deformationCrustal-scale structureFluid circulationIsotopic systemsSensitive high-resolution ion microprobeStrain partitioningShearing machinesage determinationdeformationemplacementgeochronologyGondwanaPan African orogenyProterozoicShear zoneStrain partitioningTectonic evolutionThermal evolutionUruguayTiming of deformation in the Sarandí del Yí Shear Zone, Uruguay: implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano-Pan-African OrogenyArtículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionreponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaOriolo, S.Oyhantçabal Cironi, Pedro BernardoWemmer, K.Basei, M. 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- Universidad de la Repúblicafalse |
| spellingShingle | Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano-Pan-African Orogeny Oriolo, S. Argon lasers Binary alloys Deformation Geochronology Inductively coupled plasma mass spectrometry Laser ablation Lead alloys Metals Mica Rubidium alloys Shearing Silicate minerals Strontium alloys Tectonics Timing circuits Uranium alloys Zircon Amphibolite facies Cataclastic deformation Crustal-scale structure Fluid circulation Isotopic systems Sensitive high-resolution ion microprobe Strain partitioning Shearing machines age determination deformation emplacement geochronology Gondwana Pan African orogeny Proterozoic Shear zone Strain partitioning Tectonic evolution Thermal evolution Uruguay |
| status_str | publishedVersion |
| title | Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano-Pan-African Orogeny |
| title_full | Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano-Pan-African Orogeny |
| title_fullStr | Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano-Pan-African Orogeny |
| title_full_unstemmed | Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano-Pan-African Orogeny |
| title_short | Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano-Pan-African Orogeny |
| title_sort | Timing of deformation in the Sarandí del Yí Shear Zone, Uruguay: implications for the amalgamation of western Gondwana during the Neoproterozoic Brasiliano-Pan-African Orogeny |
| topic | Argon lasers Binary alloys Deformation Geochronology Inductively coupled plasma mass spectrometry Laser ablation Lead alloys Metals Mica Rubidium alloys Shearing Silicate minerals Strontium alloys Tectonics Timing circuits Uranium alloys Zircon Amphibolite facies Cataclastic deformation Crustal-scale structure Fluid circulation Isotopic systems Sensitive high-resolution ion microprobe Strain partitioning Shearing machines age determination deformation emplacement geochronology Gondwana Pan African orogeny Proterozoic Shear zone Strain partitioning Tectonic evolution Thermal evolution Uruguay |
| url | https://hdl.handle.net/20.500.12008/22041 |
