Artículo
Abstract:
Palaeomagnetic and sedimentological studies carried out on the bottom sediments from three lakes in western Argentina are described. At the within‐lake level, five lithological units could be broadly defined and were useful as a general guide in defining detailed correlations based on the magnetic susceptibility (k) and intensity of remanent magnetization (J). In one of the three lakes, el Trebol, it was possible to derive a closer, lithologically based, correlation and this was consistent with that based on the magnetic parameters. Inter‐lake correlation was derived from the inclination and declination patterns considered as a pair, also taking account of a set of radiocarbon age determinations to remove any ambiguities. All the individual measurements were transformed to a time‐scale prior to stacking to produce type‐curves. The records for Laguna el Trebol and Brazo de Campanario extend back to about 6000 radiocarbon years before present while Lago Morenito provides a record extending back to about 14000 radiocarbon years before present. The records exhibit variations with similar overall characteristics to those previously obtained for Europe and North America, but there appears to be no correlation with the northern hemisphere patterns on a swing to swing basis. Both clockwise and anticlockwise precession of the geomagnetic vector is evident both from spectral analysis of declination/inclination pairs and VGP paths. Copyright © 1983, Wiley Blackwell. All rights reserved
Registro:
| Documento: | Artículo |
| Título: | Geomagnetic secular variations 0–14 000 yr bp as recorded by lake sediments from Argentina |
| Autor: | Creer, K.M.; Valencio, D.A.; Sinito, A.M.; Tucholka, P.; Vilas, J.F.A. |
| Filiación: | Department of Geophysics, University of Edinburgh, King's Buildings, Edinburgh, EH9 3JZ, United Kingdom University of Buenos Aires, Departamento de Ciencias Geologicas, Ciudad Universitaria, Buenos Aires, Argentina |
| Año: | 1983 |
| Volumen: | 74 |
| Número: | 1 |
| Página de inicio: | 199 |
| Página de fin: | 221 |
| DOI: | http://dx.doi.org/10.1111/j.1365-246X.1983.tb01877.x |
| Título revista: | Geophysical Journal of the Royal Astronomical Society |
| Título revista abreviado: | Geophys. J. Int. |
| ISSN: | 00168009 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00168009_v74_n1_p199_Creer |
Referencias:
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- Creer, K.M., Tucholka, P., Secular variation as recorded in lake sediments: a discussion of N. American and European results (1982) Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 306, pp. 87-102
- Creer, K.M., Tucholka, P., The shape of the geomagnetic field through the last 8,500 years over part of the northern hemisphere (1982) J. Geophys., 51, pp. 188-198
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- Vilas, J.F., (1979) El magnetómetro UBA, 8 Hz y su aplicación a los estudios paleomagnéticos, , Tesis doctoral, Departmento de Física, Universidad de Buenos Aires
Citas:
---------- APA ----------
Creer, K.M., Valencio, D.A., Sinito, A.M., Tucholka, P. & Vilas, J.F.A. (1983) . Geomagnetic secular variations 0–14 000 yr bp as recorded by lake sediments from Argentina. Geophysical Journal of the Royal Astronomical Society, 74(1), 199-221.http://dx.doi.org/10.1111/j.1365-246X.1983.tb01877.x
---------- CHICAGO ----------
Creer, K.M., Valencio, D.A., Sinito, A.M., Tucholka, P., Vilas, J.F.A. "Geomagnetic secular variations 0–14 000 yr bp as recorded by lake sediments from Argentina" . Geophysical Journal of the Royal Astronomical Society 74, no. 1 (1983) : 199-221.http://dx.doi.org/10.1111/j.1365-246X.1983.tb01877.x
---------- MLA ----------
Creer, K.M., Valencio, D.A., Sinito, A.M., Tucholka, P., Vilas, J.F.A. "Geomagnetic secular variations 0–14 000 yr bp as recorded by lake sediments from Argentina" . Geophysical Journal of the Royal Astronomical Society, vol. 74, no. 1, 1983, pp. 199-221.http://dx.doi.org/10.1111/j.1365-246X.1983.tb01877.x
---------- VANCOUVER ----------
Creer, K.M., Valencio, D.A., Sinito, A.M., Tucholka, P., Vilas, J.F.A. Geomagnetic secular variations 0–14 000 yr bp as recorded by lake sediments from Argentina. Geophys. J. Int. 1983;74(1):199-221.http://dx.doi.org/10.1111/j.1365-246X.1983.tb01877.x
