Mineralogical changes during thermal demagnetization of natural continental sandstones

Autores
Prezzi, Claudia Beatriz; Somoza, Rubén; Mercader, Roberto Carlos
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the mineralogical changes suffered by specimens of natural miocene red and green continental sandstones (from Pozuelos Formation and Tiomayo Formation) cropping out in the Argentine Puna that increase their bulk magnetic susceptibility and change color when thermally treated. We hypothesize that on heating siderite, which is present in small quantities as cement in the studied sandstones, would oxidize and decompose into maghemite and/or magnetite. Subsequent heating to higher temperatures sometimes would bring about the conversion of maghemite and/or magnetite to hematite. Mossbauer spectroscopy proved to be a very valuable tool for the determination of the presence of siderite in small amounts in the studied samples. The present results show that further work is needed in order to fully understand the mineralogical changes suffered by continental sandstones during heating. The characterization of such changes occurred during laboratory routines is relevant, since they can help to better understand natural processes.
Instituto de Física La Plata
Materia
Geofísica
Siderite
cement
Transformation
Magnetite
Maghemite
Hematite
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/138735
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/138735
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Mineralogical changes during thermal demagnetization of natural continental sandstonesPrezzi, Claudia BeatrizSomoza, RubénMercader, Roberto CarlosGeofísicaSideritecementTransformationMagnetiteMaghemiteHematiteWe study the mineralogical changes suffered by specimens of natural miocene red and green continental sandstones (from Pozuelos Formation and Tiomayo Formation) cropping out in the Argentine Puna that increase their bulk magnetic susceptibility and change color when thermally treated. We hypothesize that on heating siderite, which is present in small quantities as cement in the studied sandstones, would oxidize and decompose into maghemite and/or magnetite. Subsequent heating to higher temperatures sometimes would bring about the conversion of maghemite and/or magnetite to hematite. Mossbauer spectroscopy proved to be a very valuable tool for the determination of the presence of siderite in small amounts in the studied samples. The present results show that further work is needed in order to fully understand the mineralogical changes suffered by continental sandstones during heating. The characterization of such changes occurred during laboratory routines is relevant, since they can help to better understand natural processes.Instituto de Física La Plata2005info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf213-232http://sedici.unlp.edu.ar/handle/10915/138735enginfo:eu-repo/semantics/altIdentifier/issn/0039-3169info:eu-repo/semantics/altIdentifier/issn/1573-1626info:eu-repo/semantics/altIdentifier/doi/10.1007/s11200-005-0006-4info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:31Zoai:sedici.unlp.edu.ar:10915/138735Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:32.152SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Mineralogical changes during thermal demagnetization of natural continental sandstones
title Mineralogical changes during thermal demagnetization of natural continental sandstones
spellingShingle Mineralogical changes during thermal demagnetization of natural continental sandstones
Prezzi, Claudia Beatriz
Geofísica
Siderite
cement
Transformation
Magnetite
Maghemite
Hematite
title_short Mineralogical changes during thermal demagnetization of natural continental sandstones
title_full Mineralogical changes during thermal demagnetization of natural continental sandstones
title_fullStr Mineralogical changes during thermal demagnetization of natural continental sandstones
title_full_unstemmed Mineralogical changes during thermal demagnetization of natural continental sandstones
title_sort Mineralogical changes during thermal demagnetization of natural continental sandstones
dc.creator.none.fl_str_mv Prezzi, Claudia Beatriz
Somoza, Rubén
Mercader, Roberto Carlos
author Prezzi, Claudia Beatriz
author_facet Prezzi, Claudia Beatriz
Somoza, Rubén
Mercader, Roberto Carlos
author_role author
author2 Somoza, Rubén
Mercader, Roberto Carlos
author2_role author
author
dc.subject.none.fl_str_mv Geofísica
Siderite
cement
Transformation
Magnetite
Maghemite
Hematite
topic Geofísica
Siderite
cement
Transformation
Magnetite
Maghemite
Hematite
dc.description.none.fl_txt_mv We study the mineralogical changes suffered by specimens of natural miocene red and green continental sandstones (from Pozuelos Formation and Tiomayo Formation) cropping out in the Argentine Puna that increase their bulk magnetic susceptibility and change color when thermally treated. We hypothesize that on heating siderite, which is present in small quantities as cement in the studied sandstones, would oxidize and decompose into maghemite and/or magnetite. Subsequent heating to higher temperatures sometimes would bring about the conversion of maghemite and/or magnetite to hematite. Mossbauer spectroscopy proved to be a very valuable tool for the determination of the presence of siderite in small amounts in the studied samples. The present results show that further work is needed in order to fully understand the mineralogical changes suffered by continental sandstones during heating. The characterization of such changes occurred during laboratory routines is relevant, since they can help to better understand natural processes.
Instituto de Física La Plata
description We study the mineralogical changes suffered by specimens of natural miocene red and green continental sandstones (from Pozuelos Formation and Tiomayo Formation) cropping out in the Argentine Puna that increase their bulk magnetic susceptibility and change color when thermally treated. We hypothesize that on heating siderite, which is present in small quantities as cement in the studied sandstones, would oxidize and decompose into maghemite and/or magnetite. Subsequent heating to higher temperatures sometimes would bring about the conversion of maghemite and/or magnetite to hematite. Mossbauer spectroscopy proved to be a very valuable tool for the determination of the presence of siderite in small amounts in the studied samples. The present results show that further work is needed in order to fully understand the mineralogical changes suffered by continental sandstones during heating. The characterization of such changes occurred during laboratory routines is relevant, since they can help to better understand natural processes.
publishDate 2005
dc.date.none.fl_str_mv 2005
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/138735
url http://sedici.unlp.edu.ar/handle/10915/138735
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0039-3169
info:eu-repo/semantics/altIdentifier/issn/1573-1626
info:eu-repo/semantics/altIdentifier/doi/10.1007/s11200-005-0006-4
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
213-232
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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