Environmental magnetism of a paleosoil in the Lujan Formation (Luján, Buenos Aires Province), comparison with other areas in the province and palaeoclimatic considerations

Autores
Orgeira, M.J.; Walther, A.M.; Tófalo, R.O.; Vásquez, C.A.; Berquó, T.; Favier Dobois, C.; Böhnel, H.
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
An environmental magnetic study of mainly fluvial "postpampean sediments" assigned to the Lujan Formation (Luján, Buenos Aires Province, Argentina) was carried out. The results obtained suggest a depletion of detrital ferromagnetic minerals during the pedogenetic processes. A characteristic magnetic signal can be distinguished in Holocene paleosols and soils of both eolian and fluvial "post-Pampean sediments" (Fm. Luján and Fm. La Postrera . This signal is analogous to that determined in loessic Pampean sediments assigned to the Buenos Aires Formation. It is inferred that the depletion of detrital ferromagnetic minerals is a general process in the Chacopampean area. This process may be associated with the genesis of a superparamagnetic fraction (SP), which could indicate dry periods during the climatic event. The depletion could also be associated with the genesis of a high coercitivy fraction, analogous with those determined in paleosols in the Pampean loess.
Fil:Orgeira, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Walther, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Tófalo, R.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Vásquez, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
Rev. Asoc. Geol. Argent. 2002;57(4):451-462
Materia
Environmental magnetism
Paleoclimates
Quaternary
Rock magnetism
geomagnetism
paleoclimate
paleomagnetism
paleosol
Quaternary
Argentina
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/2.5/ar
Repositorio
Biblioteca Digital (UBA-FCEN)
Institución
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
OAI Identificador
paperaa:paper_00044822_v57_n4_p451_Orgeira
Acceder
id BDUBAFCEN_7681dcfa5bac9e2256ecd6b9740dece9
oai_identifier_str paperaa:paper_00044822_v57_n4_p451_Orgeira
network_acronym_str BDUBAFCEN
repository_id_str 1896
network_name_str Biblioteca Digital (UBA-FCEN)
spelling Environmental magnetism of a paleosoil in the Lujan Formation (Luján, Buenos Aires Province), comparison with other areas in the province and palaeoclimatic considerations Orgeira, M.J.Walther, A.M.Tófalo, R.O.Vásquez, C.A.Berquó, T.Favier Dobois, C.Böhnel, H.Environmental magnetismPaleoclimatesQuaternaryRock magnetismgeomagnetismpaleoclimatepaleomagnetismpaleosolQuaternaryArgentinaAn environmental magnetic study of mainly fluvial "postpampean sediments" assigned to the Lujan Formation (Luján, Buenos Aires Province, Argentina) was carried out. The results obtained suggest a depletion of detrital ferromagnetic minerals during the pedogenetic processes. A characteristic magnetic signal can be distinguished in Holocene paleosols and soils of both eolian and fluvial "post-Pampean sediments" (Fm. Luján and Fm. La Postrera . This signal is analogous to that determined in loessic Pampean sediments assigned to the Buenos Aires Formation. It is inferred that the depletion of detrital ferromagnetic minerals is a general process in the Chacopampean area. This process may be associated with the genesis of a superparamagnetic fraction (SP), which could indicate dry periods during the climatic event. The depletion could also be associated with the genesis of a high coercitivy fraction, analogous with those determined in paleosols in the Pampean loess.Fil:Orgeira, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Walther, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Tófalo, R.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Vásquez, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2002info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_00044822_v57_n4_p451_OrgeiraRev. Asoc. Geol. Argent. 2002;57(4):451-462reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2025-09-04T09:48:27Zpaperaa:paper_00044822_v57_n4_p451_OrgeiraInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-09-04 09:48:30.369Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv Environmental magnetism of a paleosoil in the Lujan Formation (Luján, Buenos Aires Province), comparison with other areas in the province and palaeoclimatic considerations
title Environmental magnetism of a paleosoil in the Lujan Formation (Luján, Buenos Aires Province), comparison with other areas in the province and palaeoclimatic considerations
spellingShingle Environmental magnetism of a paleosoil in the Lujan Formation (Luján, Buenos Aires Province), comparison with other areas in the province and palaeoclimatic considerations
Orgeira, M.J.
Environmental magnetism
Paleoclimates
Quaternary
Rock magnetism
geomagnetism
paleoclimate
paleomagnetism
paleosol
Quaternary
Argentina
title_short Environmental magnetism of a paleosoil in the Lujan Formation (Luján, Buenos Aires Province), comparison with other areas in the province and palaeoclimatic considerations
title_full Environmental magnetism of a paleosoil in the Lujan Formation (Luján, Buenos Aires Province), comparison with other areas in the province and palaeoclimatic considerations
title_fullStr Environmental magnetism of a paleosoil in the Lujan Formation (Luján, Buenos Aires Province), comparison with other areas in the province and palaeoclimatic considerations
title_full_unstemmed Environmental magnetism of a paleosoil in the Lujan Formation (Luján, Buenos Aires Province), comparison with other areas in the province and palaeoclimatic considerations
title_sort Environmental magnetism of a paleosoil in the Lujan Formation (Luján, Buenos Aires Province), comparison with other areas in the province and palaeoclimatic considerations
dc.creator.none.fl_str_mv Orgeira, M.J.
Walther, A.M.
Tófalo, R.O.
Vásquez, C.A.
Berquó, T.
Favier Dobois, C.
Böhnel, H.
author Orgeira, M.J.
author_facet Orgeira, M.J.
Walther, A.M.
Tófalo, R.O.
Vásquez, C.A.
Berquó, T.
Favier Dobois, C.
Böhnel, H.
author_role author
author2 Walther, A.M.
Tófalo, R.O.
Vásquez, C.A.
Berquó, T.
Favier Dobois, C.
Böhnel, H.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Environmental magnetism
Paleoclimates
Quaternary
Rock magnetism
geomagnetism
paleoclimate
paleomagnetism
paleosol
Quaternary
Argentina
topic Environmental magnetism
Paleoclimates
Quaternary
Rock magnetism
geomagnetism
paleoclimate
paleomagnetism
paleosol
Quaternary
Argentina
dc.description.none.fl_txt_mv An environmental magnetic study of mainly fluvial "postpampean sediments" assigned to the Lujan Formation (Luján, Buenos Aires Province, Argentina) was carried out. The results obtained suggest a depletion of detrital ferromagnetic minerals during the pedogenetic processes. A characteristic magnetic signal can be distinguished in Holocene paleosols and soils of both eolian and fluvial "post-Pampean sediments" (Fm. Luján and Fm. La Postrera . This signal is analogous to that determined in loessic Pampean sediments assigned to the Buenos Aires Formation. It is inferred that the depletion of detrital ferromagnetic minerals is a general process in the Chacopampean area. This process may be associated with the genesis of a superparamagnetic fraction (SP), which could indicate dry periods during the climatic event. The depletion could also be associated with the genesis of a high coercitivy fraction, analogous with those determined in paleosols in the Pampean loess.
Fil:Orgeira, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Walther, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Tófalo, R.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Vásquez, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
description An environmental magnetic study of mainly fluvial "postpampean sediments" assigned to the Lujan Formation (Luján, Buenos Aires Province, Argentina) was carried out. The results obtained suggest a depletion of detrital ferromagnetic minerals during the pedogenetic processes. A characteristic magnetic signal can be distinguished in Holocene paleosols and soils of both eolian and fluvial "post-Pampean sediments" (Fm. Luján and Fm. La Postrera . This signal is analogous to that determined in loessic Pampean sediments assigned to the Buenos Aires Formation. It is inferred that the depletion of detrital ferromagnetic minerals is a general process in the Chacopampean area. This process may be associated with the genesis of a superparamagnetic fraction (SP), which could indicate dry periods during the climatic event. The depletion could also be associated with the genesis of a high coercitivy fraction, analogous with those determined in paleosols in the Pampean loess.
publishDate 2002
dc.date.none.fl_str_mv 2002
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/20.500.12110/paper_00044822_v57_n4_p451_Orgeira
url http://hdl.handle.net/20.500.12110/paper_00044822_v57_n4_p451_Orgeira
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Rev. Asoc. Geol. Argent. 2002;57(4):451-462
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (UBA-FCEN)
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
_version_ 1842340703209783296
score 12.623145

Publicaciones similares