The use of the magnetic signal of soils and paleosoils as a climatic function

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The use of the magnetic signal of soils and paleosoils as a climatic function. The correlation between an index of potential water storage (PWS) with magnetic signal in soils and paleosoils, developed in loessic sediments has been proposed. The analyzed data suggest the existence of climatic thresho...

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Autores principales: Orgeira, M.J., Compagnucci, R.H.
Formato: Artículo publishedVersion
Publicado: 2009
Materias:
Late cenozoic
Magnetism
Paleoclimate
Paleosoils
Cenozoic
geomagnetism
loess
magnetic mineral
paleoclimate
paleosol
parent material
Rumania
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v65_n4_p612_Orgeira
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v65_n4_p612_Orgeira_oai
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Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires
id I28-R145-paper_00044822_v65_n4_p612_Orgeira_oai
record_format dspace
spelling I28-R145-paper_00044822_v65_n4_p612_Orgeira_oai2020-10-19 Orgeira, M.J. Compagnucci, R.H. 2009 The use of the magnetic signal of soils and paleosoils as a climatic function. The correlation between an index of potential water storage (PWS) with magnetic signal in soils and paleosoils, developed in loessic sediments has been proposed. The analyzed data suggest the existence of climatic thresholds that affect the genesis, preservation or depletion of ferrimagnetic minerals. Soils and paleosoils characterized by a positive PWS have an appropriate environment that favors the depletion of ferromagnetic minerals due to mainly reductive loss. Such soils are characterized by a depletion of detrital ferrimagnetic minerals, as in northeastern Pampean plain soils and paleosoils of Argentina and SE of China. A negative PWS prevents highly reducing conditions in the soil, and the detrital ferrimagnetic minerals are preserved. On the other hand, the environmental conditions of these soils allow the formation of new nannoparticle minerals. These conditions produce a net magnetic enhancement of the soil, as observed in European soils (Russia, Czech Republic, Rumania), Asian (paleosoils from the loess plateau of China) and Northern African ones (Tunisia). The influence of parent material in the magnetic signal is also discussed. Fil:Orgeira, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Compagnucci, R.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_00044822_v65_n4_p612_Orgeira info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Rev. Asoc. Geol. Argent. 2009;65(4):612-623 Late cenozoic Magnetism Paleoclimate Paleosoils Cenozoic geomagnetism loess magnetic mineral paleoclimate paleosol parent material Rumania The use of the magnetic signal of soils and paleosoils as a climatic function info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v65_n4_p612_Orgeira_oai
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-145
collection Repositorio Digital de la Universidad de Buenos Aires (UBA)
topic Late cenozoic
Magnetism
Paleoclimate
Paleosoils
Cenozoic
geomagnetism
loess
magnetic mineral
paleoclimate
paleosol
parent material
Rumania
spellingShingle Late cenozoic
Magnetism
Paleoclimate
Paleosoils
Cenozoic
geomagnetism
loess
magnetic mineral
paleoclimate
paleosol
parent material
Rumania
Orgeira, M.J.
Compagnucci, R.H.
The use of the magnetic signal of soils and paleosoils as a climatic function
topic_facet Late cenozoic
Magnetism
Paleoclimate
Paleosoils
Cenozoic
geomagnetism
loess
magnetic mineral
paleoclimate
paleosol
parent material
Rumania
description The use of the magnetic signal of soils and paleosoils as a climatic function. The correlation between an index of potential water storage (PWS) with magnetic signal in soils and paleosoils, developed in loessic sediments has been proposed. The analyzed data suggest the existence of climatic thresholds that affect the genesis, preservation or depletion of ferrimagnetic minerals. Soils and paleosoils characterized by a positive PWS have an appropriate environment that favors the depletion of ferromagnetic minerals due to mainly reductive loss. Such soils are characterized by a depletion of detrital ferrimagnetic minerals, as in northeastern Pampean plain soils and paleosoils of Argentina and SE of China. A negative PWS prevents highly reducing conditions in the soil, and the detrital ferrimagnetic minerals are preserved. On the other hand, the environmental conditions of these soils allow the formation of new nannoparticle minerals. These conditions produce a net magnetic enhancement of the soil, as observed in European soils (Russia, Czech Republic, Rumania), Asian (paleosoils from the loess plateau of China) and Northern African ones (Tunisia). The influence of parent material in the magnetic signal is also discussed.
format Artículo
Artículo
publishedVersion
author Orgeira, M.J.
Compagnucci, R.H.
author_facet Orgeira, M.J.
Compagnucci, R.H.
author_sort Orgeira, M.J.
title The use of the magnetic signal of soils and paleosoils as a climatic function
title_short The use of the magnetic signal of soils and paleosoils as a climatic function
title_full The use of the magnetic signal of soils and paleosoils as a climatic function
title_fullStr The use of the magnetic signal of soils and paleosoils as a climatic function
title_full_unstemmed The use of the magnetic signal of soils and paleosoils as a climatic function
title_sort use of the magnetic signal of soils and paleosoils as a climatic function
publishDate 2009
url http://hdl.handle.net/20.500.12110/paper_00044822_v65_n4_p612_Orgeira
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v65_n4_p612_Orgeira_oai
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AT compagnuccirh theuseofthemagneticsignalofsoilsandpaleosoilsasaclimaticfunction
AT orgeiramj useofthemagneticsignalofsoilsandpaleosoilsasaclimaticfunction
AT compagnuccirh useofthemagneticsignalofsoilsandpaleosoilsasaclimaticfunction
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