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

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
Lenguaje:Inglés
Publicado: 2009
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Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v65_n4_p612_Orgeira
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spelling paperaa:paper_00044822_v65_n4_p612_Orgeira2023-06-12T16:40:27Z The use of the magnetic signal of soils and paleosoils as a climatic function Rev. Asoc. Geol. Argent. 2009;65(4):612-623 Orgeira, M.J. Compagnucci, R.H. 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. 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. 2009 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v65_n4_p612_Orgeira
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
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
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