Abstract:
The influence of climate on the magnetic signal has been investigated assuming it is a first order factor in soil formation. In order to assess the degree of variability of the magnetic signal under different drainage conditions, Mollisols from the Pampean region developed on Pampean loess at varying topographical positions were studied. The sampled sites were located south and north of Buenos Aires in Verónica and Zárate, Pampa Ondulada. The magnetic signal is opposite in the two areas. The generation of superparamagnetic particles (SP) seems to be higher in Zárate. The loss of detrital magnetite could be higher in the less drained soils, in agreement with the hypothesis of loss of detrital magnetite by reductive process. As a simplified interpretation, it is suggested that the differential soil humidity in the studied soils could explain their different magnetic signal. The degree of drainage seems to be the variable that conditions the process of reduction loss. © 2008 Elsevier Ltd. All rights reserved.
Registro:
Documento: |
Artículo
|
Título: | Rock magnetism in modern soils, Buenos Aires Province, Argentina |
Autor: | Orgeira, M.J.; Pereyra, F.X.; Vásquez, C.; Castañeda, E.; Compagnucci, R. |
Filiación: | Consejo Nacional de Investigaciones Científicas CONICET, Argentina Daniel Valencio, Laboratory of Paleomagnetism, FCEN, Universidad de Buenos Aires, Pab. II, 1428 Buenos Aires, Argentina
|
Palabras clave: | Environmental magnetism; Mollisols; Pampean loess; formation mechanism; humidity; loess; magnetite; Mollisol; reduction; Argentina; Buenos Aires [Argentina]; South America; Veronica |
Año: | 2008
|
Volumen: | 26
|
Número: | 2
|
Página de inicio: | 217
|
Página de fin: | 224
|
DOI: |
http://dx.doi.org/10.1016/j.jsames.2008.03.007 |
Título revista: | Journal of South American Earth Sciences
|
Título revista abreviado: | J. South Am. Earth Sci.
|
ISSN: | 08959811
|
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v26_n2_p217_Orgeira |
Referencias:
- Barros, V.E., Castañeda, E., Doyle, M., Precipitation trends in Southern South America, east of the Andes: an indication of climate variability (2000) Southern Hemisphere Paleo- and Neoclimates: Key Sites, Methods, Data and Models, pp. 187-208. , Smolka P.P., and Volkheimer W. (Eds), Springer-Verlag, Berlin
- Banerjee, S.K., Hunt, C., Separation of local signals from the regional paleomonsoon record of the Chinese loess plateau: a rock-magnetic approach (1993) Geophysical Research Letters, 20 (9), pp. 843-846
- Birkeland, P., (1999) Soils and Geomorphology, , Oxford University Press, New York, Oxford 430p
- Bloemendal, J., Liu, X., Rock magnetism and geochemistry of two plio-pleistocene Chinese loess-paleosols sequences - implications for quantitative paleoprecipitation reconstruction (2005) Paleogeography, Paleoclimatology, Paleoecology, 226, pp. 149-166
- Buol, S.W., Hole, F.D., McCracken, R.J., (1991) Soil Genesis and Classification, , The Iowa State University Press, Ames, Iowa p. 411
- Castañeda, E., Barros, V., Las tendencias de la precipitación en el Cono Sur de América al este de los Andes (1994) Metereológica, 19 (1), pp. 23-32
- Cioccale, M.A., Climatic fluctuations in the Central Region of Argentina in the last 1000 years (1999) Quaternary International, 62, pp. 35-47
- Dearing, J.A., Hay, K.L., Baban, S.M.J., Huddleston, A.S., Wellington, E.M.H., Lovenland, P.J., Magnetic susceptibility of soil: an evaluation of conflicting theories using a national data set (1996) Geophysics Journal International, 127, pp. 728-734
- Faure, G., (1998) Principles and Application of Geochemistry. second ed., , Prentice Hall, New Jersey p. 600
- Han, J., Lu, H., Wu, N., Guo, Z., Magnetic susceptibility of modern soils in China and climate conditions (1996) Studia Geophyisica et Geodetica, 40, pp. 262-275
- Heusser, C., Some comparisons between climatic changes in north-western North America and Patagonia (1961) New York Academy of Science Annals, 95, pp. 642-757
- Hoffmann, J.A.J., Nuñez, S., Gómez, A., 1987. Fluctuaciones de la precipitación en la Argentina, en lo que va del siglo. II: Congreso Interamericano de Meteorologi{dotless}́a y Congremet V, Buenos Aires, Argentina, pp. 12.1.1-12.1.5; Hunt, P.C., Banerjee, S.K., Han, J., Solheid, P.A., Oches, E.A., Sun, W., Liu, T.S., Rock-magnetic proxies of climate change in the loess-palaeosol sequences of the western Loess Plateau of China (1995) Geophysics Journal International, 123, pp. 232-246
- Hurtado, M., Dillon, A., Castillo, R., 1985. Incidencia de factores pedogénicos en suelos del partido de Carlos Tejedor. 1° Jornadas Geológicas Provincia de Buenos Aires, Actas, pp. 23-35; IPCC, 2001. In the scientific basis. In: Houghton, J.T., Ding, Y., Griggs, D.J., Noguer, M., van der Linden, P.J., Xiaosu, D. (Eds.), Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, UK, 944p; Iriondo, M., Climatic changes in the South American plains: records of a continent-scale oscillation (1999) Quaternary International, (57-58), pp. 93-112
- Jackson, M., Worm, H.-U., Banerjee, S.K., Fourier analysis of digital hysteresis data: rock magnetic applications (1990) Physics of the Earth and Planetary Interiors, 65, pp. 78-87
- Jordanova, D., Jordanova, N., Magnetic characteristics of different soil types from Bulgaria (1999) Studia Geophyisica et Geodetica, 43, pp. 303-318
- Köppen, W., (1923) Die Klimate der Erde: Grundriss der Klimakunde, , Walter de Gruyter & Co., Berlin p. 369
- Lovley, D.R., Stolz, J., Nord, J.L., Phillips, E.J., Anaerobic production of magnetite by a dissimilatory iron-reducing microorganism (1987) Nature, 330, pp. 252-254
- McBride, (1994) Environmental Chemistry of Soils, , Oxford University Press, Oxford p. 406
- Maher, B., Magnetic properties of modern soils and Quaternary loessic paleosols: paleoclimatic implications (1998) Palaeogeography, Palaeoclimatology and Palaeoecology, 137, pp. 25-54
- Orgeira, M.J., Walther, A.M., Vasquez, C.A., Di Tommaso, I., Alonso, S., Sherwood, G., Yuguan, H., Vilas, J.F.A., Mineral magnetic record of paleoclimate variation in loess and paleosol from the Buenos Aires formation (Buenos Aires, Argentina) (1998) Journal of South American Earth Science, 11 (6), pp. 561-570
- Orgeira, M.J., Walther, A.M., Tófalo, R., Vásquez, C.A., Berquó, T., Dubois, C.F., Bhonel, H., Environmental magnetism in paleosoils developed in fluvial and loessic holocene sediments from Chacopampean Plain (Argentina) (2003) Journal of South American Earth Science, 16, pp. 259-274
- Parras, P., 1943. Diario y Derrotero de sus Viajes. Ediciones Argentinas Solar, Buenos Aires, 251p; Politis, G., Climatic variations during historical times in eastern Buenos Aires Pampas (1984) Quaternary of South America and Antarctic Peninsula, pp. 133-161. , Rabassa J., and Salemme M. (Eds), Balkema, Rotterdam
- Prohaska, F., The climate of Argentina, Paraguay and Uruguay (1976) World Survey of Climatology, pp. 13-73. , Climates of Central and South America. Schwerdtfeger W. (Ed), Elsevier, Amsterdam
- Thornthwaite, C.W., An approach toward a rational classification of climate (1948) Geographical Review, 38 (1), pp. 55-94
- Torrent, J., Barón, V., Liu, Q., Magnetic enhancement is linked to and precedes hematite formation in the aerobic soil (2006) Geophysical Research Letters, 33 (2), pp. L02401
- Valero-Garces, B.L., Delgado-Huertas, A., Ratto, N., Navas, A., Edwards, L., Paleohydrology of Andean saline lakes from sedimentological and isotopic records, Northwestern Argentina (2000) Journal of Paleolimnology, 24, pp. 343-359
- Villalba, R., Tree-ring and glacial evidence for the Medieval Warm Epoch and Little Ice Age in southern South America (1994) Climatic Change, 26, pp. 183-197
Citas:
---------- APA ----------
Orgeira, M.J., Pereyra, F.X., Vásquez, C., Castañeda, E. & Compagnucci, R.
(2008)
. Rock magnetism in modern soils, Buenos Aires Province, Argentina. Journal of South American Earth Sciences, 26(2), 217-224.
http://dx.doi.org/10.1016/j.jsames.2008.03.007---------- CHICAGO ----------
Orgeira, M.J., Pereyra, F.X., Vásquez, C., Castañeda, E., Compagnucci, R.
"Rock magnetism in modern soils, Buenos Aires Province, Argentina"
. Journal of South American Earth Sciences 26, no. 2
(2008) : 217-224.
http://dx.doi.org/10.1016/j.jsames.2008.03.007---------- MLA ----------
Orgeira, M.J., Pereyra, F.X., Vásquez, C., Castañeda, E., Compagnucci, R.
"Rock magnetism in modern soils, Buenos Aires Province, Argentina"
. Journal of South American Earth Sciences, vol. 26, no. 2, 2008, pp. 217-224.
http://dx.doi.org/10.1016/j.jsames.2008.03.007---------- VANCOUVER ----------
Orgeira, M.J., Pereyra, F.X., Vásquez, C., Castañeda, E., Compagnucci, R. Rock magnetism in modern soils, Buenos Aires Province, Argentina. J. South Am. Earth Sci. 2008;26(2):217-224.
http://dx.doi.org/10.1016/j.jsames.2008.03.007