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Abstract:

Paleomagnetic data for Jurassic and Cretaceous rocks from the South American and Patagonian platforms and the Andean chain were recomputed or reevaluated. The reliable data for Lower and Upper Cretaceous rocks from the Andean Chain for sampling sites situated north of Arica do not support the abrupt change in the trend of the Andes north of Arica (Bolivian orocline) as being post-orogenic. The distribution of the Late Cretaceous paleomagnetic poles for South America, including those for the Upper Cretaceous rocks exposed in the Andean chain north of Arica, can be interpreted as the effect of an apparent polar shift of this continent. The paleomagnetic data of the Early and Late Cretaceous rocks from the Andean chain exposed north of Arica can then be explained by continental-scale geodynamic processes.

Registro:

Documento: Artículo
Título:Palaeomagnetism of Jurassic and Cretaceous rocks from South America and the tectonics of the central Andes
Autor:Oviedo, E.S.; Valencio, D.A.; Vilas, J.F.
Filiación:CONICET-UBA C. Universitaria, Pabellon II, 1428 Buenos Aires, Argentina
Año:1991
Volumen:265
Página de inicio:291
Página de fin:299
DOI: http://dx.doi.org/10.1130/SPE265-p291
Título revista:Special Paper of the Geological Society of America
Título revista abreviado:Spec. Pap. Geol. Soc. Am.
ISSN:00721077
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00721077_v265_n_p291_Oviedo

Citas:

---------- APA ----------
Oviedo, E.S., Valencio, D.A. & Vilas, J.F. (1991) . Palaeomagnetism of Jurassic and Cretaceous rocks from South America and the tectonics of the central Andes. Special Paper of the Geological Society of America, 265, 291-299.
http://dx.doi.org/10.1130/SPE265-p291
---------- CHICAGO ----------
Oviedo, E.S., Valencio, D.A., Vilas, J.F. "Palaeomagnetism of Jurassic and Cretaceous rocks from South America and the tectonics of the central Andes" . Special Paper of the Geological Society of America 265 (1991) : 291-299.
http://dx.doi.org/10.1130/SPE265-p291
---------- MLA ----------
Oviedo, E.S., Valencio, D.A., Vilas, J.F. "Palaeomagnetism of Jurassic and Cretaceous rocks from South America and the tectonics of the central Andes" . Special Paper of the Geological Society of America, vol. 265, 1991, pp. 291-299.
http://dx.doi.org/10.1130/SPE265-p291
---------- VANCOUVER ----------
Oviedo, E.S., Valencio, D.A., Vilas, J.F. Palaeomagnetism of Jurassic and Cretaceous rocks from South America and the tectonics of the central Andes. Spec. Pap. Geol. Soc. Am. 1991;265:291-299.
http://dx.doi.org/10.1130/SPE265-p291