Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)

Autores
Kirschbaum, Alicia Matilde; Martínez, Estela; Pettinari, Gisela Roxana; Herrero, Silvana Andrea
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Abstract: Two weathering profiles evolved on peneplain-related granites in Sierra Norte, Córdoba province, were examined. Several weathering levels, of no more than 2 m thickness, were studied in these profiles. They had developed from similar parent rock, which had been exposed to hydrothermal processes of varying intensity. Fracturing is the most notable feature produced by weathering; iron oxides and silica subsequently filled these fractures, conferring a breccia-like character to the rock. The clay minerals are predominantly illitic, reflecting the mineral composition of the protolith. Smaller amounts of interstratified I/S RO type are also present, as well as scarce caolinite+chlorite that originated from the weathering of feldspar and biotite, respectively. The geochemical parameters define the weathering as incipient, in contrast to the geomorphological characteristics of Sierra Norte, which point to a long weathering history. This apparent incompatibility could be due to the probable erosion of the more weathered levels of the ancient peneplains, of which only a few relicts remain. Similar processes have been described at different sites in the Sierras Pampeanas. Reconstruction and dating of the paleosurfaces will make it possible to set time boundaries on the weathering processes studied and adjust the paleographic and paleoclimatic interpretations of this great South American region.
Fil: Kirschbaum, Alicia Matilde. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
Fil: Martínez, Estela. Universidad Nacional de Córdoba; Argentina
Fil: Pettinari, Gisela Roxana. Universidad Nacional del Comahue; Argentina
Fil: Herrero, Silvana Andrea. Universidad Nacional de Córdoba; Argentina
Materia
Granites
Sierras Pampeanas
Weathering Profiles
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:11336/54250
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)Kirschbaum, Alicia MatildeMartínez, EstelaPettinari, Gisela RoxanaHerrero, Silvana AndreaGranitesSierras PampeanasWeathering Profileshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Abstract: Two weathering profiles evolved on peneplain-related granites in Sierra Norte, Córdoba province, were examined. Several weathering levels, of no more than 2 m thickness, were studied in these profiles. They had developed from similar parent rock, which had been exposed to hydrothermal processes of varying intensity. Fracturing is the most notable feature produced by weathering; iron oxides and silica subsequently filled these fractures, conferring a breccia-like character to the rock. The clay minerals are predominantly illitic, reflecting the mineral composition of the protolith. Smaller amounts of interstratified I/S RO type are also present, as well as scarce caolinite+chlorite that originated from the weathering of feldspar and biotite, respectively. The geochemical parameters define the weathering as incipient, in contrast to the geomorphological characteristics of Sierra Norte, which point to a long weathering history. This apparent incompatibility could be due to the probable erosion of the more weathered levels of the ancient peneplains, of which only a few relicts remain. Similar processes have been described at different sites in the Sierras Pampeanas. Reconstruction and dating of the paleosurfaces will make it possible to set time boundaries on the weathering processes studied and adjust the paleographic and paleoclimatic interpretations of this great South American region.Fil: Kirschbaum, Alicia Matilde. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; ArgentinaFil: Martínez, Estela. Universidad Nacional de Córdoba; ArgentinaFil: Pettinari, Gisela Roxana. Universidad Nacional del Comahue; ArgentinaFil: Herrero, Silvana Andrea. Universidad Nacional de Córdoba; ArgentinaPergamon-Elsevier Science Ltd2005-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54250Kirschbaum, Alicia Matilde; Martínez, Estela; Pettinari, Gisela Roxana; Herrero, Silvana Andrea; Weathering profiles in granites, Sierra Norte (Córdoba, Argentina); Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 19; 4; 9-2005; 479-4930895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2005.06.001info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981105000842info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:35:20Zoai:ri.conicet.gov.ar:11336/54250instacron: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:34982025-10-15 15:35:20.594CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)
title Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)
spellingShingle Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)
Kirschbaum, Alicia Matilde
Granites
Sierras Pampeanas
Weathering Profiles
title_short Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)
title_full Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)
title_fullStr Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)
title_full_unstemmed Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)
title_sort Weathering profiles in granites, Sierra Norte (Córdoba, Argentina)
dc.creator.none.fl_str_mv Kirschbaum, Alicia Matilde
Martínez, Estela
Pettinari, Gisela Roxana
Herrero, Silvana Andrea
author Kirschbaum, Alicia Matilde
author_facet Kirschbaum, Alicia Matilde
Martínez, Estela
Pettinari, Gisela Roxana
Herrero, Silvana Andrea
author_role author
author2 Martínez, Estela
Pettinari, Gisela Roxana
Herrero, Silvana Andrea
author2_role author
author
author
dc.subject.none.fl_str_mv Granites
Sierras Pampeanas
Weathering Profiles
topic Granites
Sierras Pampeanas
Weathering Profiles
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Abstract: Two weathering profiles evolved on peneplain-related granites in Sierra Norte, Córdoba province, were examined. Several weathering levels, of no more than 2 m thickness, were studied in these profiles. They had developed from similar parent rock, which had been exposed to hydrothermal processes of varying intensity. Fracturing is the most notable feature produced by weathering; iron oxides and silica subsequently filled these fractures, conferring a breccia-like character to the rock. The clay minerals are predominantly illitic, reflecting the mineral composition of the protolith. Smaller amounts of interstratified I/S RO type are also present, as well as scarce caolinite+chlorite that originated from the weathering of feldspar and biotite, respectively. The geochemical parameters define the weathering as incipient, in contrast to the geomorphological characteristics of Sierra Norte, which point to a long weathering history. This apparent incompatibility could be due to the probable erosion of the more weathered levels of the ancient peneplains, of which only a few relicts remain. Similar processes have been described at different sites in the Sierras Pampeanas. Reconstruction and dating of the paleosurfaces will make it possible to set time boundaries on the weathering processes studied and adjust the paleographic and paleoclimatic interpretations of this great South American region.
Fil: Kirschbaum, Alicia Matilde. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
Fil: Martínez, Estela. Universidad Nacional de Córdoba; Argentina
Fil: Pettinari, Gisela Roxana. Universidad Nacional del Comahue; Argentina
Fil: Herrero, Silvana Andrea. Universidad Nacional de Córdoba; Argentina
description Abstract: Two weathering profiles evolved on peneplain-related granites in Sierra Norte, Córdoba province, were examined. Several weathering levels, of no more than 2 m thickness, were studied in these profiles. They had developed from similar parent rock, which had been exposed to hydrothermal processes of varying intensity. Fracturing is the most notable feature produced by weathering; iron oxides and silica subsequently filled these fractures, conferring a breccia-like character to the rock. The clay minerals are predominantly illitic, reflecting the mineral composition of the protolith. Smaller amounts of interstratified I/S RO type are also present, as well as scarce caolinite+chlorite that originated from the weathering of feldspar and biotite, respectively. The geochemical parameters define the weathering as incipient, in contrast to the geomorphological characteristics of Sierra Norte, which point to a long weathering history. This apparent incompatibility could be due to the probable erosion of the more weathered levels of the ancient peneplains, of which only a few relicts remain. Similar processes have been described at different sites in the Sierras Pampeanas. Reconstruction and dating of the paleosurfaces will make it possible to set time boundaries on the weathering processes studied and adjust the paleographic and paleoclimatic interpretations of this great South American region.
publishDate 2005
dc.date.none.fl_str_mv 2005-09
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/11336/54250
Kirschbaum, Alicia Matilde; Martínez, Estela; Pettinari, Gisela Roxana; Herrero, Silvana Andrea; Weathering profiles in granites, Sierra Norte (Córdoba, Argentina); Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 19; 4; 9-2005; 479-493
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/54250
identifier_str_mv Kirschbaum, Alicia Matilde; Martínez, Estela; Pettinari, Gisela Roxana; Herrero, Silvana Andrea; Weathering profiles in granites, Sierra Norte (Córdoba, Argentina); Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 19; 4; 9-2005; 479-493
0895-9811
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2005.06.001
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981105000842
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
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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 13.22299

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