Artículo

Domeier, M.; Van Der Voo, R.; Tohver, E.; Tomezzoli, R.N.; Vizan, H.; Torsvik, T.H.; Kirshner, J. "New Late Permian paleomagnetic data from Argentina: Refinement of the apparent polar wander path of Gondwana" (2011) Geochemistry, Geophysics, Geosystems. 12(7)
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Abstract:

The Late Paleozoic-Early Mesozoic apparent polar wander path of Gondwana is largely constructed from relatively old paleomagnetic results, many of which are considered unreliable by modern standards. Paleomagnetic results derived from sedimentary sequences, which are generally poorly dated and prone to inclination shallowing, are especially common. Here we report the results of a joint paleomagnetic-geochronologic study of a volcanic complex in central Argentina. U-Pb dating of zircons has yielded a robust age estimate of 263.0 +1.6/-2.0 Ma for the complex. Paleomagnetic analysis has revealed a pretilting (primary Permian) magnetization with dual polarities. Rock magnetic experiments have identified pseudo-single domain (titano)magnetite and hematite as the mineralogic carriers of the magnetization. Lightning-induced isothermal remagnetizations are widespread in the low-coercivity magnetic carriers. The resulting paleomagnetic pole is 80.1S, 349.0E, A 95 = 3.3, N = 35, and it improves a Late Permian mean pole calculated from a filtered South American paleomagnetic data set. More broadly, this new, high-quality, igneous-based paleomagnetic pole falls between the previously distinct Late Permian segments of the Laurussian and Gondwanan apparent polar wander paths, suggesting that the long-recognized disparity between these large paleomagnetic data sets may be primarily due to the inclusion of low-quality or systemically biased data. © 2011 by the American Geophysical Union.

Registro:

Documento: Artículo
Título:New Late Permian paleomagnetic data from Argentina: Refinement of the apparent polar wander path of Gondwana
Autor:Domeier, M.; Van Der Voo, R.; Tohver, E.; Tomezzoli, R.N.; Vizan, H.; Torsvik, T.H.; Kirshner, J.
Filiación:Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109-1005, United States
School of Earth and Geographical Sciences, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
Departamento de Ciencias Geológicas, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C.P. 1428, Buenos Aires, Argentina
Center for Advanced Study, Norwegian Academy of Science and Letters, Drammensveien 78, N-0271 Oslo, Norway
Department of Physics, University of Oslo, Postboks 1048 Blindern, N-0316 Oslo, Norway
School of Geosciences, University of the Witwatersrand, Wits, Johannesburg, 2050, South Africa
Palabras clave:Gondwana; paleomagnetism; Permian; Geochronology; Geomagnetism; Iron ores; Lithology; Magnetization; Geomagnetism; Lithology; Magnetization; Argentina; Gondwana; High quality; Late Permian; Low qualities; Magnetic Carriers; Mesozoic; Modern standards; Paleomagnetic analysis; Paleomagnetic data; Paleomagnetic poles; paleomagnetism; Permian; Sedimentary sequence; U-Pb dating; Volcanic complex; Inclination shallowing; Paleomagnetism; Volcanic rocks; Geochronology; apparent polar wander path; geochronology; Gondwana; magnetization; Mesozoic; paleomagnetism; Paleozoic; Permian; remagnetization; sedimentary sequence; uranium-lead dating; zircon; Argentina
Año:2011
Volumen:12
Número:7
DOI: http://dx.doi.org/10.1029/2011GC003616
Título revista:Geochemistry, Geophysics, Geosystems
Título revista abreviado:Geochem. Geophys. Geosyst.
ISSN:15252027
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15252027_v12_n7_p_Domeier

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Citas:

---------- APA ----------
Domeier, M., Van Der Voo, R., Tohver, E., Tomezzoli, R.N., Vizan, H., Torsvik, T.H. & Kirshner, J. (2011) . New Late Permian paleomagnetic data from Argentina: Refinement of the apparent polar wander path of Gondwana. Geochemistry, Geophysics, Geosystems, 12(7).
http://dx.doi.org/10.1029/2011GC003616
---------- CHICAGO ----------
Domeier, M., Van Der Voo, R., Tohver, E., Tomezzoli, R.N., Vizan, H., Torsvik, T.H., et al. "New Late Permian paleomagnetic data from Argentina: Refinement of the apparent polar wander path of Gondwana" . Geochemistry, Geophysics, Geosystems 12, no. 7 (2011).
http://dx.doi.org/10.1029/2011GC003616
---------- MLA ----------
Domeier, M., Van Der Voo, R., Tohver, E., Tomezzoli, R.N., Vizan, H., Torsvik, T.H., et al. "New Late Permian paleomagnetic data from Argentina: Refinement of the apparent polar wander path of Gondwana" . Geochemistry, Geophysics, Geosystems, vol. 12, no. 7, 2011.
http://dx.doi.org/10.1029/2011GC003616
---------- VANCOUVER ----------
Domeier, M., Van Der Voo, R., Tohver, E., Tomezzoli, R.N., Vizan, H., Torsvik, T.H., et al. New Late Permian paleomagnetic data from Argentina: Refinement of the apparent polar wander path of Gondwana. Geochem. Geophys. Geosyst. 2011;12(7).
http://dx.doi.org/10.1029/2011GC003616