Correlation between paleosol-soil magnetic signal and climate

A comparison of the index of potential water storage (PWS) with the magnetic properties of soils in Russia and of Argentina and China paleosols suggests the existence of one or two climatic thresholds that affect the formation, preservation or depletion of ferrimagnetic minerals. Soils characterized...

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Autores principales:	Orgeira, María Julia, Compagnucci, Rosa Hilda
Publicado:	2006
Materias:	Environmental magnetism Late Cenozoic Loess and paleosol sequences Paleoclimate Cenozoic geomagnetism magnetic mineral magnetic property paleoclimate paleomagnetism paleosol Argentina Asia China Eurasia Far East Russian Federation South America
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13438832_v58_n10_p1373_Orgeira http://hdl.handle.net/20.500.12110/paper_13438832_v58_n10_p1373_Orgeira
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_13438832_v58_n10_p1373_Orgeira
record_format	dspace
spelling	paper:paper_13438832_v58_n10_p1373_Orgeira2023-06-08T16:10:43Z Correlation between paleosol-soil magnetic signal and climate Orgeira, María Julia Compagnucci, Rosa Hilda Environmental magnetism Late Cenozoic Loess and paleosol sequences Paleoclimate Cenozoic geomagnetism magnetic mineral magnetic property paleoclimate paleomagnetism paleosol Argentina Asia China Eurasia Far East Russian Federation South America A comparison of the index of potential water storage (PWS) with the magnetic properties of soils in Russia and of Argentina and China paleosols suggests the existence of one or two climatic thresholds that affect the formation, preservation or depletion of ferrimagnetic minerals. Soils characterized by a positive PWS are wetted during an important part of the year, creating an appropriate environment that favors the depletion of ferrimagnetic minerals due to mainly reductive dissolution. Such soils are characterized by a depletion of detrital ferrimagnetic minerals, as observed in Argentinean soils and paleosols. On the other hand, a negative PWS prevents highly reducing conditions in the soil, and the detrital ferrimagnetic minerals are preserved. The environmental conditions of these soils allow the formation of (superparamagnetic) pedogenic minerals, together with the preservation of lithogenic minerals. These conditions produce a net magnetic enhancement of the soil, as observed in Russia and China. The second threshold in PWS could be at a positive value. Above this second threshold, the water content of the soil during practically the whole year could allow the formation of (superparamagnetic) pedogenic minerals. This threshold could explain differences in the magnetic enhancement or depletion of Argentina soils characterized by a positive PWS. Copyright © The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS); The Seismological Society of Japan; The Volcanological Society of Japan; The Geodetic Society of Japan; The Japanese Society for Planetary Sciences; TERRAPUB. 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. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13438832_v58_n10_p1373_Orgeira http://hdl.handle.net/20.500.12110/paper_13438832_v58_n10_p1373_Orgeira
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Environmental magnetism Late Cenozoic Loess and paleosol sequences Paleoclimate Cenozoic geomagnetism magnetic mineral magnetic property paleoclimate paleomagnetism paleosol Argentina Asia China Eurasia Far East Russian Federation South America
spellingShingle	Environmental magnetism Late Cenozoic Loess and paleosol sequences Paleoclimate Cenozoic geomagnetism magnetic mineral magnetic property paleoclimate paleomagnetism paleosol Argentina Asia China Eurasia Far East Russian Federation South America Orgeira, María Julia Compagnucci, Rosa Hilda Correlation between paleosol-soil magnetic signal and climate
topic_facet	Environmental magnetism Late Cenozoic Loess and paleosol sequences Paleoclimate Cenozoic geomagnetism magnetic mineral magnetic property paleoclimate paleomagnetism paleosol Argentina Asia China Eurasia Far East Russian Federation South America
description	A comparison of the index of potential water storage (PWS) with the magnetic properties of soils in Russia and of Argentina and China paleosols suggests the existence of one or two climatic thresholds that affect the formation, preservation or depletion of ferrimagnetic minerals. Soils characterized by a positive PWS are wetted during an important part of the year, creating an appropriate environment that favors the depletion of ferrimagnetic minerals due to mainly reductive dissolution. Such soils are characterized by a depletion of detrital ferrimagnetic minerals, as observed in Argentinean soils and paleosols. On the other hand, a negative PWS prevents highly reducing conditions in the soil, and the detrital ferrimagnetic minerals are preserved. The environmental conditions of these soils allow the formation of (superparamagnetic) pedogenic minerals, together with the preservation of lithogenic minerals. These conditions produce a net magnetic enhancement of the soil, as observed in Russia and China. The second threshold in PWS could be at a positive value. Above this second threshold, the water content of the soil during practically the whole year could allow the formation of (superparamagnetic) pedogenic minerals. This threshold could explain differences in the magnetic enhancement or depletion of Argentina soils characterized by a positive PWS. Copyright © The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS); The Seismological Society of Japan; The Volcanological Society of Japan; The Geodetic Society of Japan; The Japanese Society for Planetary Sciences; TERRAPUB.
author	Orgeira, María Julia Compagnucci, Rosa Hilda
author_facet	Orgeira, María Julia Compagnucci, Rosa Hilda
author_sort	Orgeira, María Julia
title	Correlation between paleosol-soil magnetic signal and climate
title_short	Correlation between paleosol-soil magnetic signal and climate
title_full	Correlation between paleosol-soil magnetic signal and climate
title_fullStr	Correlation between paleosol-soil magnetic signal and climate
title_full_unstemmed	Correlation between paleosol-soil magnetic signal and climate
title_sort	correlation between paleosol-soil magnetic signal and climate
publishDate	2006
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13438832_v58_n10_p1373_Orgeira http://hdl.handle.net/20.500.12110/paper_13438832_v58_n10_p1373_Orgeira
work_keys_str_mv	AT orgeiramariajulia correlationbetweenpaleosolsoilmagneticsignalandclimate AT compagnuccirosahilda correlationbetweenpaleosolsoilmagneticsignalandclimate
_version_	1768546551228006400

Correlation between paleosol-soil magnetic signal and climate

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