Coexistence of halloysite and iron-bearing clays in an altered ignimbrite, Patagonia, Argentina

Autores
Cravero, Fiorella; Marfil, Silvina Andrea; Ramos, C. P.; Maiza, Pedro
Año de publicación
2014
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión enviada
Descripción
The Mamil Choique halloysite deposits of Patagonia, Argentina, contain randomly distributed green clay inclusions and patches within the halloysite mass. Halloysite has been formed from the thorough alteration of rhyolitic to dacitic ash fall tuffs and ignimbrites of the Huitrera Formation, Eocene age, under ambient conditions. The smectites present in the clay inclusions have been determined as ferruginous beidellites with variables amounts of Fe3+ in octahedral sites. The weathering activity that caused the formation of halloysite was also responsible for the genesis of the iron-bearing clay minerals, the formation of which was controlled mainly by permeability. Textural variations within the rock indicate favourable local geochemical environments for the formation of the green clay minerals present.
Materia
Geología
iron-bearing smectites
halloysite
weathering
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
CIC Digital (CICBA)
Institución
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
OAI Identificador
oai:digital.cic.gba.gob.ar:11746/4550
Acceder
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oai_identifier_str oai:digital.cic.gba.gob.ar:11746/4550
network_acronym_str CICBA
repository_id_str 9441
network_name_str CIC Digital (CICBA)
spelling Coexistence of halloysite and iron-bearing clays in an altered ignimbrite, Patagonia, ArgentinaCravero, FiorellaMarfil, Silvina AndreaRamos, C. P.Maiza, PedroGeologíairon-bearing smectiteshalloysiteweatheringThe Mamil Choique halloysite deposits of Patagonia, Argentina, contain randomly distributed green clay inclusions and patches within the halloysite mass. Halloysite has been formed from the thorough alteration of rhyolitic to dacitic ash fall tuffs and ignimbrites of the Huitrera Formation, Eocene age, under ambient conditions. The smectites present in the clay inclusions have been determined as ferruginous beidellites with variables amounts of Fe3+ in octahedral sites. The weathering activity that caused the formation of halloysite was also responsible for the genesis of the iron-bearing clay minerals, the formation of which was controlled mainly by permeability. Textural variations within the rock indicate favourable local geochemical environments for the formation of the green clay minerals present.2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/4550spaPatagonia (Argentina)info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-04T09:43:56Zoai:digital.cic.gba.gob.ar:11746/4550Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-04 09:43:57.161CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse
dc.title.none.fl_str_mv Coexistence of halloysite and iron-bearing clays in an altered ignimbrite, Patagonia, Argentina
title Coexistence of halloysite and iron-bearing clays in an altered ignimbrite, Patagonia, Argentina
spellingShingle Coexistence of halloysite and iron-bearing clays in an altered ignimbrite, Patagonia, Argentina
Cravero, Fiorella
Geología
iron-bearing smectites
halloysite
weathering
title_short Coexistence of halloysite and iron-bearing clays in an altered ignimbrite, Patagonia, Argentina
title_full Coexistence of halloysite and iron-bearing clays in an altered ignimbrite, Patagonia, Argentina
title_fullStr Coexistence of halloysite and iron-bearing clays in an altered ignimbrite, Patagonia, Argentina
title_full_unstemmed Coexistence of halloysite and iron-bearing clays in an altered ignimbrite, Patagonia, Argentina
title_sort Coexistence of halloysite and iron-bearing clays in an altered ignimbrite, Patagonia, Argentina
dc.creator.none.fl_str_mv Cravero, Fiorella
Marfil, Silvina Andrea
Ramos, C. P.
Maiza, Pedro
author Cravero, Fiorella
author_facet Cravero, Fiorella
Marfil, Silvina Andrea
Ramos, C. P.
Maiza, Pedro
author_role author
author2 Marfil, Silvina Andrea
Ramos, C. P.
Maiza, Pedro
author2_role author
author
author
dc.subject.none.fl_str_mv Geología
iron-bearing smectites
halloysite
weathering
topic Geología
iron-bearing smectites
halloysite
weathering
dc.description.none.fl_txt_mv The Mamil Choique halloysite deposits of Patagonia, Argentina, contain randomly distributed green clay inclusions and patches within the halloysite mass. Halloysite has been formed from the thorough alteration of rhyolitic to dacitic ash fall tuffs and ignimbrites of the Huitrera Formation, Eocene age, under ambient conditions. The smectites present in the clay inclusions have been determined as ferruginous beidellites with variables amounts of Fe3+ in octahedral sites. The weathering activity that caused the formation of halloysite was also responsible for the genesis of the iron-bearing clay minerals, the formation of which was controlled mainly by permeability. Textural variations within the rock indicate favourable local geochemical environments for the formation of the green clay minerals present.
description The Mamil Choique halloysite deposits of Patagonia, Argentina, contain randomly distributed green clay inclusions and patches within the halloysite mass. Halloysite has been formed from the thorough alteration of rhyolitic to dacitic ash fall tuffs and ignimbrites of the Huitrera Formation, Eocene age, under ambient conditions. The smectites present in the clay inclusions have been determined as ferruginous beidellites with variables amounts of Fe3+ in octahedral sites. The weathering activity that caused the formation of halloysite was also responsible for the genesis of the iron-bearing clay minerals, the formation of which was controlled mainly by permeability. Textural variations within the rock indicate favourable local geochemical environments for the formation of the green clay minerals present.
publishDate 2014
dc.date.none.fl_str_mv 2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv https://digital.cic.gba.gob.ar/handle/11746/4550
url https://digital.cic.gba.gob.ar/handle/11746/4550
dc.language.none.fl_str_mv spa
language spa
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Patagonia (Argentina)
dc.source.none.fl_str_mv reponame:CIC Digital (CICBA)
instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron:CICBA
reponame_str CIC Digital (CICBA)
collection CIC Digital (CICBA)
instname_str Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron_str CICBA
institution CICBA
repository.name.fl_str_mv CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
repository.mail.fl_str_mv marisa.degiusti@sedici.unlp.edu.ar
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score 12.623145

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