Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)

Autores
Dristas, Jorge Anastasio; Martinez, Juan Cruz
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
New outcrops of hydrothermal clay alterations, associated with the Late Proterozoic unconformity between the migmatitic basement and sedimentary quartzitic sandstone sequence, were found near small iron (goethite and hematite) deposits in the north Barker area (Tandilia, Argentina). Studied rocks from the contact, wall rock deposits and ores give evidence for hydrothermal activity. A characterization of the iron ore genesis, based on petrography, ore microscopy, X-ray diffractometry, fluid inclusion microthermometry, whole rock analyses (major, trace and rare earth elements), cathodoluminescence, and electron microprobe, is given. The iron source may be assigned to the destruction of mafic minerals of the migmatite basement. Aluminium-phosphate- sulphate minerals associated with both altered rocks at the contact, derived from the destruction of apatite and allanite of basement rocks by hydrothermal activity. Preliminary K-Ar dating of secondary well crystallized sericite from basement alteration indicate a Late Precambrian age for the hydrothermal event representing a widely distributed episode at the unconformity between the basement and sedimentary cover in the Tandilia ranges.
Fil: Dristas, Jorge Anastasio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Martinez, Juan Cruz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Materia
Tandilia, Barker
Iron Ore Deposits
Hydrothermal Alteration
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:11336/75847
Acceder
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spelling Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)Dristas, Jorge AnastasioMartinez, Juan CruzTandilia, BarkerIron Ore DepositsHydrothermal Alterationhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1New outcrops of hydrothermal clay alterations, associated with the Late Proterozoic unconformity between the migmatitic basement and sedimentary quartzitic sandstone sequence, were found near small iron (goethite and hematite) deposits in the north Barker area (Tandilia, Argentina). Studied rocks from the contact, wall rock deposits and ores give evidence for hydrothermal activity. A characterization of the iron ore genesis, based on petrography, ore microscopy, X-ray diffractometry, fluid inclusion microthermometry, whole rock analyses (major, trace and rare earth elements), cathodoluminescence, and electron microprobe, is given. The iron source may be assigned to the destruction of mafic minerals of the migmatite basement. Aluminium-phosphate- sulphate minerals associated with both altered rocks at the contact, derived from the destruction of apatite and allanite of basement rocks by hydrothermal activity. Preliminary K-Ar dating of secondary well crystallized sericite from basement alteration indicate a Late Precambrian age for the hydrothermal event representing a widely distributed episode at the unconformity between the basement and sedimentary cover in the Tandilia ranges.Fil: Dristas, Jorge Anastasio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaFil: Martinez, Juan Cruz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaE Schweizerbartsche Verlags2007-12-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/75847Dristas, Jorge Anastasio; Martinez, Juan Cruz; Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina); E Schweizerbartsche Verlags; Neues Jahrbuch für Geologie und Palaontologie - Abhandlungen; 246; 3; 29-12-2007; 267-2810077-7749CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.schweizerbart.de/papers/njgpa/detail/246/59213/Late_Proterozoic_unconformity_related_hydrothermal_iron_deposits_in_the_northern_Barker_area_Tandilia_ranges_Argentinainfo:eu-repo/semantics/altIdentifier/doi/10.1127/0077-7749/2007/0246-0267info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:45Zoai:ri.conicet.gov.ar:11336/75847instacron: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 09:59:45.404CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)
title Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)
spellingShingle Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)
Dristas, Jorge Anastasio
Tandilia, Barker
Iron Ore Deposits
Hydrothermal Alteration
title_short Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)
title_full Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)
title_fullStr Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)
title_full_unstemmed Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)
title_sort Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina)
dc.creator.none.fl_str_mv Dristas, Jorge Anastasio
Martinez, Juan Cruz
author Dristas, Jorge Anastasio
author_facet Dristas, Jorge Anastasio
Martinez, Juan Cruz
author_role author
author2 Martinez, Juan Cruz
author2_role author
dc.subject.none.fl_str_mv Tandilia, Barker
Iron Ore Deposits
Hydrothermal Alteration
topic Tandilia, Barker
Iron Ore Deposits
Hydrothermal Alteration
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv New outcrops of hydrothermal clay alterations, associated with the Late Proterozoic unconformity between the migmatitic basement and sedimentary quartzitic sandstone sequence, were found near small iron (goethite and hematite) deposits in the north Barker area (Tandilia, Argentina). Studied rocks from the contact, wall rock deposits and ores give evidence for hydrothermal activity. A characterization of the iron ore genesis, based on petrography, ore microscopy, X-ray diffractometry, fluid inclusion microthermometry, whole rock analyses (major, trace and rare earth elements), cathodoluminescence, and electron microprobe, is given. The iron source may be assigned to the destruction of mafic minerals of the migmatite basement. Aluminium-phosphate- sulphate minerals associated with both altered rocks at the contact, derived from the destruction of apatite and allanite of basement rocks by hydrothermal activity. Preliminary K-Ar dating of secondary well crystallized sericite from basement alteration indicate a Late Precambrian age for the hydrothermal event representing a widely distributed episode at the unconformity between the basement and sedimentary cover in the Tandilia ranges.
Fil: Dristas, Jorge Anastasio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Martinez, Juan Cruz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
description New outcrops of hydrothermal clay alterations, associated with the Late Proterozoic unconformity between the migmatitic basement and sedimentary quartzitic sandstone sequence, were found near small iron (goethite and hematite) deposits in the north Barker area (Tandilia, Argentina). Studied rocks from the contact, wall rock deposits and ores give evidence for hydrothermal activity. A characterization of the iron ore genesis, based on petrography, ore microscopy, X-ray diffractometry, fluid inclusion microthermometry, whole rock analyses (major, trace and rare earth elements), cathodoluminescence, and electron microprobe, is given. The iron source may be assigned to the destruction of mafic minerals of the migmatite basement. Aluminium-phosphate- sulphate minerals associated with both altered rocks at the contact, derived from the destruction of apatite and allanite of basement rocks by hydrothermal activity. Preliminary K-Ar dating of secondary well crystallized sericite from basement alteration indicate a Late Precambrian age for the hydrothermal event representing a widely distributed episode at the unconformity between the basement and sedimentary cover in the Tandilia ranges.
publishDate 2007
dc.date.none.fl_str_mv 2007-12-29
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/11336/75847
Dristas, Jorge Anastasio; Martinez, Juan Cruz; Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina); E Schweizerbartsche Verlags; Neues Jahrbuch für Geologie und Palaontologie - Abhandlungen; 246; 3; 29-12-2007; 267-281
0077-7749
CONICET Digital
CONICET
url http://hdl.handle.net/11336/75847
identifier_str_mv Dristas, Jorge Anastasio; Martinez, Juan Cruz; Late Proterozoic unconformity-related hydrothermal iron deposits in the northern Barker area (Tandilia ranges, Argentina); E Schweizerbartsche Verlags; Neues Jahrbuch für Geologie und Palaontologie - Abhandlungen; 246; 3; 29-12-2007; 267-281
0077-7749
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://www.schweizerbart.de/papers/njgpa/detail/246/59213/Late_Proterozoic_unconformity_related_hydrothermal_iron_deposits_in_the_northern_Barker_area_Tandilia_ranges_Argentina
info:eu-repo/semantics/altIdentifier/doi/10.1127/0077-7749/2007/0246-0267
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv E Schweizerbartsche Verlags
publisher.none.fl_str_mv E Schweizerbartsche Verlags
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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score 13.13397

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