Navegar

Colección

Datos Estadísticas

Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

Palaeomagnetic data from 101 hand samples collected in a rock sequence of about 300m of red beds and igneous rocks of the La Colina Formation (Late Palaeozoic) and Amaná‐Talampaya Formation (Early Triassic) exposed in north‐western Argentina (30° S 67° W) are given. Samples were submitted to thermal, chemical and AC cleaning. After cleaning, the majority of La Colina Formation samples showed reversed polarity and yielded a palaeomagnetic pole at 49° S 343° E (α95=5°), which is consistent with the K‐Ar age (295 ± 5 Myr, Late Carboniferous) of a basaltic lava flow situated in the middle of La Colina rock succession. These rocks also recorded a normal polarity event (which we have correlated with the latest normal polarity event of the Debal'tseva Zone at the base of the Kiaman Magnetic Interval) and two excursions of the geomagnetic field. After treatment, the samples from the Amaná‐Talampaya Formation showed normal and reversed polarity and revealed frequent reversals and excursions of the geomagnetic field suggesting an Illawarra Zone age (post Kiaman, Late Tatarian‐Early Scyntian and younger). Copyright © 1979, Wiley Blackwell. All rights reserved

Registro:

Documento: Artículo
Título:Palaeomagnetism of a sequence of Upper Palaeozoic‐Lower Mesozoic red beds from Argentina
Autor:Sinito, A.M.; Valencio, D.A.; Vilas, J.F.
Filiación:Consejo Nacional de Investigaciones Científicas Y Técnicas, Rivadavia, Buenos Aires, 1917, Argentina
Consejo Nacional de Investigaciones Científicas Y Técnicas, Rivadavia, Buenos Aires, 1917, Argentina
Departmento de Ciencias Geológicas, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires, Argentina
Departmento de Ciencias Geológicas, Facultad de Ciencias Exactas Y Naturalaes, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires, Argentina
Año:1979
Volumen:58
Número:2
Página de inicio:237
Página de fin:247
DOI: http://dx.doi.org/10.1111/j.1365-246X.1979.tb01022.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_v58_n2_p237_Sinito

Referencias:

  • Azcuy, C.L., Morelli, J.R., Geología de la Comarca Paganzo‐Amaná. El Grupo Paganzo, Formaciones que lo componen y sus relaciones (1970) Rev. Asoc. Geolog. Argent., 25, pp. 405-429
  • Azcuy, C.L., Morelli, J.R., Valencio, D.A., Vilas, J.F., (1978), Estratigrafía de la comarca Amaná‐Talampaya, VII Congreso Geológico Argentino; Creer, K.M., Palaeomagnetic data from the Gondwanic continents. A Symposium on Continental Drift (1965) Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 258, pp. 27-40
  • Fisher, R.A., Dispersion on a sphere (1953) Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 217, pp. 295-305
  • Morelli, J.R., (1967), Estratigrafía y tectónica de la cuesta de Amaná y alrededores, Prov. de la Rioja, Thesis, University of Buenos Aires; Roy, J.L., Park, J.K., The magnetization process of certain red beds: vector analysis of chemical and thermal results (1974) Canadian Journal of Earth Sciences, 11, pp. 437-471
  • Thompson, R., Mitchell, J.G., Palaeomagnetic and radiometric evidence for the age of the lower boundary of the Kiaman Magnetic Interval in South America (1972) Geophysical Journal International, 27, pp. 207-214
  • Valencio, D.A., Intercontinental correlation of Late Palaeozoic South American rocks on the basis of their magnetic remanences (1972) An. Acad. Bras. Cienc., 44, pp. 357-364
  • Valencio, D.A., (1977), Correlation of Late Palaeozoic‐Early Mesozoic rocks from South America and Africa on basis of their magnetic remanences, Seminar on past configuration of Gondwana and Geological correlation through time, Fourth International Gondwana Symposium, Calcutta, in press; Valencio, D.A., (1978), El Palaeomagnetismo: su aplicación a la correlación de rocas del Carbónico‐Pérmico, Primer Congreso Latinoamericano de Paleontología, Buenos Aires, 2–6 Abril, in press; Valencio, D.A., Rocha‐Campos, A.C., Pacca, I.G., Palaeomagnetism of some sedimentary rocks of the Late Palaeozoic Tubarâo and Pam Dois Groups, from the Paraná Basin, Brazil (1975) Rev. Brasil. Geociencias, 5, pp. 186-197
  • Valencio, D.A., Vilas, J.F., Mendia, J.E., Palaeomagnetism of a sequence of red beds of the Middle and Upper Sections of Paganzo Group (Argentina) and the correlation of Upper Palaeozoic‐Lower Mesozoic rocks (1977) Geophysical Journal International, 51, pp. 59-74

Citas:

---------- APA ----------
Sinito, A.M., Valencio, D.A. & Vilas, J.F. (1979) . Palaeomagnetism of a sequence of Upper Palaeozoic‐Lower Mesozoic red beds from Argentina. Geophysical Journal of the Royal Astronomical Society, 58(2), 237-247.
http://dx.doi.org/10.1111/j.1365-246X.1979.tb01022.x
---------- CHICAGO ----------
Sinito, A.M., Valencio, D.A., Vilas, J.F. "Palaeomagnetism of a sequence of Upper Palaeozoic‐Lower Mesozoic red beds from Argentina" . Geophysical Journal of the Royal Astronomical Society 58, no. 2 (1979) : 237-247.
http://dx.doi.org/10.1111/j.1365-246X.1979.tb01022.x
---------- MLA ----------
Sinito, A.M., Valencio, D.A., Vilas, J.F. "Palaeomagnetism of a sequence of Upper Palaeozoic‐Lower Mesozoic red beds from Argentina" . Geophysical Journal of the Royal Astronomical Society, vol. 58, no. 2, 1979, pp. 237-247.
http://dx.doi.org/10.1111/j.1365-246X.1979.tb01022.x
---------- VANCOUVER ----------
Sinito, A.M., Valencio, D.A., Vilas, J.F. Palaeomagnetism of a sequence of Upper Palaeozoic‐Lower Mesozoic red beds from Argentina. Geophys. J. Int. 1979;58(2):237-247.
http://dx.doi.org/10.1111/j.1365-246X.1979.tb01022.x