Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina

Autores
Pankhurst, Robert; Rapela, Carlos Washington; Fanning, Christopher Mark
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Three granitoid types are recognised in the Famatinian magmatic belt of NW Argentina, based on lithology and new geochemical data: (a) A minor trondhjemite-tonalite- granodiorite (TTG) group, (b) a metaluminous I-type gabbro-monzogranite suite, and (c) S-type granites. The latter occur as small cordieritic intrusions associated with I-type granodiorites and as abundant cordierite-bearing facies in large batholithic masses. Twelve new SHRIMP U-Pb zircon ages establish the contemporaneity of all three types in Early Ordovician times (mainly 470- 490 Ma ago). Sr- and Nd-isotopic data suggest that, apart from some TTG plutons of asthenospheric origin, the remaining magmas were derived from a Proterozoic crust-lithospheric mantle section. Trace element modelling suggests that the TTG originated by variable melting of a depleted gabbroid source at 10-12 kbar, and the I-type tonalite-granodiorite suite by melting of a more enriched lithospheric source at c. 5 kbar. The voluminous intermediate and acidic I-types involved hybridisation with lower and middle crustal melts. The highly peraluminous S-type granites have isotopic and inherited zircon patterns similar to those of Cambrian supracrustal metasedimentary rocks deposited in the Pampean cycle, and were derived from them by local anatexis. Other major components of the S-type batholiths involved melting of deep crust and mixing with the I-type magmas, leading to an isotopic and geochemical continuum.
Fil: Pankhurst, Robert. British Geological Survey; Reino Unido
Fil: Rapela, Carlos Washington. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Fanning, Christopher Mark. The Australian National University; Australia
Materia
ANATEXIS
GEOCHEMISTRY
GONDWANA MARGIN
MODELLING
PALAEOZOIC
U-PB GEOCHRONOLOGY
ZIRCON
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/112780
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/112780
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network_name_str CONICET Digital (CONICET)
spelling Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW ArgentinaPankhurst, RobertRapela, Carlos WashingtonFanning, Christopher MarkANATEXISGEOCHEMISTRYGONDWANA MARGINMODELLINGPALAEOZOICU-PB GEOCHRONOLOGYZIRCONhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Three granitoid types are recognised in the Famatinian magmatic belt of NW Argentina, based on lithology and new geochemical data: (a) A minor trondhjemite-tonalite- granodiorite (TTG) group, (b) a metaluminous I-type gabbro-monzogranite suite, and (c) S-type granites. The latter occur as small cordieritic intrusions associated with I-type granodiorites and as abundant cordierite-bearing facies in large batholithic masses. Twelve new SHRIMP U-Pb zircon ages establish the contemporaneity of all three types in Early Ordovician times (mainly 470- 490 Ma ago). Sr- and Nd-isotopic data suggest that, apart from some TTG plutons of asthenospheric origin, the remaining magmas were derived from a Proterozoic crust-lithospheric mantle section. Trace element modelling suggests that the TTG originated by variable melting of a depleted gabbroid source at 10-12 kbar, and the I-type tonalite-granodiorite suite by melting of a more enriched lithospheric source at c. 5 kbar. The voluminous intermediate and acidic I-types involved hybridisation with lower and middle crustal melts. The highly peraluminous S-type granites have isotopic and inherited zircon patterns similar to those of Cambrian supracrustal metasedimentary rocks deposited in the Pampean cycle, and were derived from them by local anatexis. Other major components of the S-type batholiths involved melting of deep crust and mixing with the I-type magmas, leading to an isotopic and geochemical continuum.Fil: Pankhurst, Robert. British Geological Survey; Reino UnidoFil: Rapela, Carlos Washington. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Fanning, Christopher Mark. The Australian National University; AustraliaRoyal Society of Edinburgh2000-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/112780Pankhurst, Robert; Rapela, Carlos Washington; Fanning, Christopher Mark; Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina; Royal Society of Edinburgh; Transactions of the Royal Society of Edinburgh, Earth Sciences; 91; 1-2; 11-2000; 151-1681755-69100263-5933CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1017/S0263593300007343info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/earth-and-environmental-science-transactions-of-royal-society-of-edinburgh/article/age-and-origin-of-coeval-ttg-i-and-stype-granites-in-the-famatinian-belt-of-nw-argentina/2F960B5EA0C7A050E53831954E2A41A3info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:06:19Zoai:ri.conicet.gov.ar:11336/112780instacron: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 10:06:19.499CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina
title Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina
spellingShingle Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina
Pankhurst, Robert
ANATEXIS
GEOCHEMISTRY
GONDWANA MARGIN
MODELLING
PALAEOZOIC
U-PB GEOCHRONOLOGY
ZIRCON
title_short Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina
title_full Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina
title_fullStr Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina
title_full_unstemmed Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina
title_sort Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina
dc.creator.none.fl_str_mv Pankhurst, Robert
Rapela, Carlos Washington
Fanning, Christopher Mark
author Pankhurst, Robert
author_facet Pankhurst, Robert
Rapela, Carlos Washington
Fanning, Christopher Mark
author_role author
author2 Rapela, Carlos Washington
Fanning, Christopher Mark
author2_role author
author
dc.subject.none.fl_str_mv ANATEXIS
GEOCHEMISTRY
GONDWANA MARGIN
MODELLING
PALAEOZOIC
U-PB GEOCHRONOLOGY
ZIRCON
topic ANATEXIS
GEOCHEMISTRY
GONDWANA MARGIN
MODELLING
PALAEOZOIC
U-PB GEOCHRONOLOGY
ZIRCON
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Three granitoid types are recognised in the Famatinian magmatic belt of NW Argentina, based on lithology and new geochemical data: (a) A minor trondhjemite-tonalite- granodiorite (TTG) group, (b) a metaluminous I-type gabbro-monzogranite suite, and (c) S-type granites. The latter occur as small cordieritic intrusions associated with I-type granodiorites and as abundant cordierite-bearing facies in large batholithic masses. Twelve new SHRIMP U-Pb zircon ages establish the contemporaneity of all three types in Early Ordovician times (mainly 470- 490 Ma ago). Sr- and Nd-isotopic data suggest that, apart from some TTG plutons of asthenospheric origin, the remaining magmas were derived from a Proterozoic crust-lithospheric mantle section. Trace element modelling suggests that the TTG originated by variable melting of a depleted gabbroid source at 10-12 kbar, and the I-type tonalite-granodiorite suite by melting of a more enriched lithospheric source at c. 5 kbar. The voluminous intermediate and acidic I-types involved hybridisation with lower and middle crustal melts. The highly peraluminous S-type granites have isotopic and inherited zircon patterns similar to those of Cambrian supracrustal metasedimentary rocks deposited in the Pampean cycle, and were derived from them by local anatexis. Other major components of the S-type batholiths involved melting of deep crust and mixing with the I-type magmas, leading to an isotopic and geochemical continuum.
Fil: Pankhurst, Robert. British Geological Survey; Reino Unido
Fil: Rapela, Carlos Washington. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Fanning, Christopher Mark. The Australian National University; Australia
description Three granitoid types are recognised in the Famatinian magmatic belt of NW Argentina, based on lithology and new geochemical data: (a) A minor trondhjemite-tonalite- granodiorite (TTG) group, (b) a metaluminous I-type gabbro-monzogranite suite, and (c) S-type granites. The latter occur as small cordieritic intrusions associated with I-type granodiorites and as abundant cordierite-bearing facies in large batholithic masses. Twelve new SHRIMP U-Pb zircon ages establish the contemporaneity of all three types in Early Ordovician times (mainly 470- 490 Ma ago). Sr- and Nd-isotopic data suggest that, apart from some TTG plutons of asthenospheric origin, the remaining magmas were derived from a Proterozoic crust-lithospheric mantle section. Trace element modelling suggests that the TTG originated by variable melting of a depleted gabbroid source at 10-12 kbar, and the I-type tonalite-granodiorite suite by melting of a more enriched lithospheric source at c. 5 kbar. The voluminous intermediate and acidic I-types involved hybridisation with lower and middle crustal melts. The highly peraluminous S-type granites have isotopic and inherited zircon patterns similar to those of Cambrian supracrustal metasedimentary rocks deposited in the Pampean cycle, and were derived from them by local anatexis. Other major components of the S-type batholiths involved melting of deep crust and mixing with the I-type magmas, leading to an isotopic and geochemical continuum.
publishDate 2000
dc.date.none.fl_str_mv 2000-11
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/11336/112780
Pankhurst, Robert; Rapela, Carlos Washington; Fanning, Christopher Mark; Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina; Royal Society of Edinburgh; Transactions of the Royal Society of Edinburgh, Earth Sciences; 91; 1-2; 11-2000; 151-168
1755-6910
0263-5933
CONICET Digital
CONICET
url http://hdl.handle.net/11336/112780
identifier_str_mv Pankhurst, Robert; Rapela, Carlos Washington; Fanning, Christopher Mark; Age and origin of coeval TTG, I- and S-type granites in the Famatinian belt of NW Argentina; Royal Society of Edinburgh; Transactions of the Royal Society of Edinburgh, Earth Sciences; 91; 1-2; 11-2000; 151-168
1755-6910
0263-5933
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1017/S0263593300007343
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/earth-and-environmental-science-transactions-of-royal-society-of-edinburgh/article/age-and-origin-of-coeval-ttg-i-and-stype-granites-in-the-famatinian-belt-of-nw-argentina/2F960B5EA0C7A050E53831954E2A41A3
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Edinburgh
publisher.none.fl_str_mv Royal Society of Edinburgh
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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