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This contribution comprises geological and magnetic results obtained in loess and paleosols profiles outcropped in the Pampean plain (Argentina). The sedimentary sequence exposed in Córdoba province is represented by four profiles Corralito I, Corralito II, Monte Ral815o and Lozada, 32°S 64°14'W (Argentina). These profiles were mineralogically described and magnetically analyzed. The sediments that compound the profiles contain volcanic glass between 20 and 90%. The results of two paleosols with different percentage of volcanic glass in the parent material (correlated to Marine Isotope Stage 5, MIS 5) exposed at Corralito I and Lozada, were compared; an important relationship between environmental magnetism signal and volcanic glass content was observed. All the results suggest that there are variations between different paleosols of the same area and age; such variations are attributed to content of volcanic glass in parent material; time of exposure of the parent material to pedogenic processes; and geomorphological place of each profile. At present, it is not possible to quantify certainly the paleo-precipitation index. Only qualitative interpretation can be done taking into account many variables of the geological system. © 2017, Institute of Geophysics of the ASCR, v.v.i.


Documento: Artículo
Título:Influence of volcanic glass on the magnetic signal of different paleosols in Córdoba, Argentina
Autor:Rouzaut, S.; Orgeira, M.J.
Filiación:Centro de Investigaciones en Ciencias de la Tierra (CICTERRA). Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Universidad Nacional de Córdoba, Av. Vélez Sarsfield 1611, Córdoba, X5016CGA, Argentina
Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Av. Vélez Sarsfield 1611, Córdoba, X5016CGA, Argentina
IGEBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Universidad Nacional de Buenos Aires, Ciudad Universitaria Pab. II, Nuñez, Buenos Aires, Argentina
Dpto. Ciencias Geológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:environmental magnetism; mineralogy; past climate; loess; mineralogy; paleoclimate; paleomagnetism; paleosol; volcanic glass; Argentina; Cordoba [Argentina]
Página de inicio:361
Página de fin:384
Título revista:Studia Geophysica et Geodaetica
Título revista abreviado:Stud. Geophys. Geod.


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---------- APA ----------
Rouzaut, S. & Orgeira, M.J. (2017) . Influence of volcanic glass on the magnetic signal of different paleosols in Córdoba, Argentina. Studia Geophysica et Geodaetica, 61(2), 361-384.
---------- CHICAGO ----------
Rouzaut, S., Orgeira, M.J. "Influence of volcanic glass on the magnetic signal of different paleosols in Córdoba, Argentina" . Studia Geophysica et Geodaetica 61, no. 2 (2017) : 361-384.
---------- MLA ----------
Rouzaut, S., Orgeira, M.J. "Influence of volcanic glass on the magnetic signal of different paleosols in Córdoba, Argentina" . Studia Geophysica et Geodaetica, vol. 61, no. 2, 2017, pp. 361-384.
---------- VANCOUVER ----------
Rouzaut, S., Orgeira, M.J. Influence of volcanic glass on the magnetic signal of different paleosols in Córdoba, Argentina. Stud. Geophys. Geod. 2017;61(2):361-384.