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Volume 58 Supplement 10

Special Issue: Paleomagnetism and Tectonics in Latinamerica

Tectonic implications of post-folding Permian magnetizations in the Carapacha Basin, La Pampa province, Argentina

Earth, Planets and Space volume 58, pages 1235–1246 (2006)Cite this article

Abstract

Paleomagnetic results from Permian clastic and igneous rocks of the Carapacha Basin of the Gondwáides orogenic zone of central Argentina are mainly consistent with results reported previously from the same zone further east, e.g., in the Sierra de la Ventana. Three lithologic entities were analysed: the lower member and upper member of the Carapacha Formation, and an andesite intrusive into the upper member. The directions of their characteristic remanences are similar, differ significantly from the present field direction, and are post-folding. The in situ magnetization directions are moreover consistent with directions expected for late Permian poles of the APWP for South America. The in situ pole for the lower Carapacha Formation is 70°S, 049°E, A95=11° (San Roberto pole); the pole for the upper Carapacha, combined with similar directions from the intrusive, is 64°S, 005°E, A95=5° (Río Curacó pole). These magnetizations imply that the Carapacha Formation, with a minimum age of early Late Permian (about 260 Ma.), was deformed before the end of the Permian. Structural evidence, as well as paleomagnetic, IRM, and AMS experimental results, support the interpretations. The paleogeographic implications of these results are interpreted as a significant counterclockwise movement of Gondwana between the early and the late Permian.

References

  • Azcuy, C. L. and R. Caminos, Diastrofismo, in El Sistema Carbonífero en la República Argentina, edited by S. Archangelsky, Academia Nacional de Ciencias, Córdoba, pp. 239–251, 1987.

    Google Scholar 

  • Cobbold, P. R., D. Gapais, and E. A. Rossello, Partitioning of transpressive motions within a sigmoidal foldbelt: the Variscan Sierras Australes, Argentina, Journal of Structural Geology, 13(7), 743–758, 1991.

    Article  Google Scholar 

  • Cobbold, P. R., D. Gapais, E. A. Rossello, E. Milani, and P. Szatmari, Permo-Triassic intracontinental deformation in SW Gondwana, in Inversion Tectonics of the Cape Fold Belt, Karoo and Cretaceous Basins of Southern Africa, edited by W. Ransome, pp. 23–26, Balkema, Rotterdam, 1992.

    Google Scholar 

  • Dalmayrac, B., G. Laubacher, R. Marocco, C. Martinez, and P. Tomasi, La chaine hercynienne d’Amerique du Sud. Structure et evolution d’un orogene intracratonique, Sonderdruck a.d. Geol. Rundschau, 69(1), 1–21, Stuttgart, 1980.

    Article  Google Scholar 

  • Dunlop, D. J. and Ö. Özdemir, Rock Magnetism. Fundamentals and Frontiers, Cambridge University Press, 573 pp., Cambridge, 1997.

    Book  Google Scholar 

  • Du Toit, A., A geological comparison of South America with South Africa, Carnegie Institute of Washington Publications, 381, 1–157. Washington, 1927.

    Google Scholar 

  • Embleton, B. J. J., Paleomagnetic results for the Permian of South America and a comparison with the African and Australian data, Geophysical Journal Royal astronomical Society, 21,105–118, 1970.

    Article  Google Scholar 

  • Enkin, J. R., The direction-correction tilt test: an all-purpose tilt/fold test for paleomagnetic studies, Earth and Planetary Science Letters, 212, 151–166, 2003.

    Article  Google Scholar 

  • Ernesto, M., New Early Triassic Paleomagnetic Pole for South America from the Alto Paraguay Alkaline Province, 2005 Joint Assembly AGU, New Orleans, USA, Abstracts: GP-41A-08, 2005.

    Google Scholar 

  • Fisher, R. A., Dispersion on a sphere, Proceedings Royal Society of London, A217, 295–305, 1953.

    Article  Google Scholar 

  • Gradstein, F., J. Ogg, and A. Smith, A Geologic Time Scale 2004, Cambridge University Press, New York, 589 pp., 2004.

    Book  Google Scholar 

  • Halls, H. C., A least squares method to find a remanence direction from converging remagnetization circles, Geophysical Journal of the Royal Astronomical Society, 45, 297–304, 1976.

    Article  Google Scholar 

  • Japas, M. S., La deformación de la cadena plegada de las Sierras Australes de la provincia de Buenos Aires, Anales de la Academia Nacional de Ciencias Exactas Físicas y Naturales, 40, 193–215, Buenos Aires, 1989.

    Google Scholar 

  • Jelinek, K., Characterization of the magnetic fabric of rocks, Tectonophysics, 79, 63–67, 1981.

    Article  Google Scholar 

  • Kay, S. M., V. A. Ramos, C. Mpodozis, and P. Sruoga, Late Paleozoic to Jurassic silicic magmatism at the Gondwana margin: Analogy to the Middle Proterozoic in North America?, Geology, 17, 324–328, 1989.

    Article  Google Scholar 

  • Keidel, J., La geología de las sierras de la Provincia de Buenos Aires y sus relaciones con las montañas del Cabo y los Andes, Ministerio de Agricultura Nacional, Anales Dirección Nacional de Geología y Mineria. IX (3), Buenos Aires, 1916.

    Google Scholar 

  • Kirschvink, J. L., The least squares line and plane and the analysis of paleomagnetic data, Geophysical Journal Royal Astronomical Society, 62, 699–718, 1980.

    Article  Google Scholar 

  • Linares, E., E. J. Llambías, and C. O. Latorre, Geología de la provincia de La Pampa, República Argentina y Geocronología de sus rocas metamórficas y eruptivas, Revista de la Asociación Geológica Argentina, 35(1), 87–146, 1980.

    Google Scholar 

  • Llambías, J. E. and A. M. Sato, El batolito de Colanguil: transición entre orogénesis y anorogénesis, Revista de la Asociación Geológica Argentina, 50(1–4), 111–131, 1995.

    Google Scholar 

  • Llambías, E. J., R. N. Melchor, H. Tickyj, and A. M. Sato, Geología del Bloque del Chadileuvú. XIII Congreso Geológico Argentino y III Congreso de Exploración de Hidrocarburos, Actas V, 417–425, Buenos Aires, 1996.

    Google Scholar 

  • López Gamundi, O. R., P. J. Conaghan, E. A. Rosello, and P. R. Cobbold, The Tunas Formation (Permian) in the Sierras Australes Foldbelt, east central Argentina: evidence for syntectonic sedimentation in a foreland basin, Journal of South American Earth Sciences, 8(2), 129–142, 1995.

    Article  Google Scholar 

  • Malvicini, L. and D. H. Delpino, Metalogénesis de los complejos riolíticos de la provincia geológica Sanrafaelino Pampeana y la Comarca Nordpatagónica, Argentina. X Congreso Geológico Argentino, 5, 63–82, S. M. de Tucumán, 1987.

    Google Scholar 

  • McElhinny, N. W. and J. Lock, IAGA paleomagnetic databases, Access Surv. Geophys., 17, 575–591, 1996.

    Article  Google Scholar 

  • McFadden, P. L., A new fold test for paleomagnetic studies, Geophysical Journal International, 103, 163–169, 1990.

    Article  Google Scholar 

  • McFadden, P. L. and N. W. McElhinny, The combined analysis of remagnetization circles and direct observations in paleomagnetism, Geophysical Journal International, 103, 725–729, 1988.

    Article  Google Scholar 

  • Melchor, R. N., Sedimentología de las unidades paleozoicas aflorantes del centro—oeste de la provincia de La Pampa, Argentina. Universidad Nacional de La Plata. Tesis doctoral inédita, 272 pp., La Plata, 1995.

    Google Scholar 

  • Melchor, R. N., Redefinición estratigráfica de la Formación Carapacha (Pérmico), Provincia de La Pampa, Argentina, Revista de la Asociació n Geológica Argentina, 54, 99–108, 1999.

    Google Scholar 

  • Melchor, R. N. and E. J. Llambías, Descripción de la Hoja Geológica 37661 “Santa Isabel”. Provincia de La Pampa, Servicio Geológico Minero Argentino, 48 pp. (unpublished), 2000.

    Google Scholar 

  • Melchor, R. N. and S. N. Césari, Algunos elementos paleoflorísticos de la Formación Carapacha (Pérmico inferior), provincia de La Pampa, República Argentina, Ameghiniana, 28, 347–352, 1991.

    Google Scholar 

  • Melchor, R. N. and S. N. Césari, Permian floras from Carapacha Basin, La Pampa Province, central Argentina. Description and importance, Geobios, 30(5), 607–633, 1997.

    Article  Google Scholar 

  • Pascholati, E. M., Possibilidade de interferencias termais do magnetismo Juro-cretácico na analise paleomagnética do Grupo Itarare, Atlas do 4 Simposio Regional de Geologia, SBG: 211–222, Sao Paulo, 1983.

    Google Scholar 

  • Ramos,. A., Patagonia: un continente paleozoico a la deriva?, 9° Congreso Geológico Argentino, Actas II, S. C. Bariloche, Buenos Aires, 311–325, 1984.

    Google Scholar 

  • Ramos, V. A., Tectonics of the Late Proterozoic Early Paleozoic: a collisional history of Southern South America, Episodes, 11(3), 168–174, Ottawa, 1988.

    Google Scholar 

  • Rapalini, A. E. and D. H. Tarling, Multiple magnetizations in the Cambrian—Ordovician carbonate platform of the Argentine Precordillera and their tectonic implications, Tectonophysics, 227, 49–62, 1993.

    Article  Google Scholar 

  • Rapalini, A. E., D. H. Tarling, P. Turner, S. Flint, and J. F. Vilas, Paleomagnetism of the Carboniferous Tepuel Group, central Patagonia, Argentina, Tectonics, 13(5), 1277–1294, 1994.

    Article  Google Scholar 

  • Rapalini, A. E., S. Fazzito, and D. Orué, A new Late Permian paleomagnetic pole for stable South America: the Independencia Group, Paleomagnetism in Latinoamerica, Earth Planets Space, 58, this issue, xxx–xxx, 2006.

    Article  Google Scholar 

  • Rapela, C. W., R. J. Pankhurst, E. J. Llambías, C. Labudía, and A. Artabe, “Gondwana” magmatism of Patagonia: Inner cordilleran calc-alkaline batholiths and bimodal volcanic provinces, Proceedings Third International Symposium on Andean Geodynamics, 791–794, Saint Malo, 1996.

    Google Scholar 

  • Sellés Martinez, J., The structure of Sierras Australes (Buenos Aires, Argentina). An example of folding in a transpressive environment, Journal of South America Earth Science, 2(4), 317–329, 1989.

    Article  Google Scholar 

  • Sinito, A. M., D. A. Valencio, and J. F. Vilas, Paleomagnetism of a sequence of Upper Paleozoic-Lower Mesozoic red beds from Argentina, Geophysical Journal Royal astronomical Society, 58, 237–247, 1979.

    Article  Google Scholar 

  • Tarling, D. H. and F. Hrouda, The Magnetic Anisotropy of Rocks, edited by Chapman & Hall, London, Se1 8 Hn., 217 p, 1993.

    Google Scholar 

  • Tickyj, H., Estructura y petrología del basamento cristalino de la región centro—sur de la provincia de La Pampa, Argentina. Tesis Doctoral. Universidad Nacional de La Plata, 228. La Plata, Unpublished, 1999.

    Google Scholar 

  • Tickyj, H., E. J. Llambías, and A. M. Sato, El basamento cristalino de la región sur-oriental de la provincia de La Pampa: Extensión austral del Oróeno Famatiniano de Sierras Pampeanas, 14th Congreso Geológico Argentino, Actas 1, 160–163, 1999.

    Google Scholar 

  • Tomezzoli, R. N., Further paleomagnetic results from the Sierras Australes fold and thrust belt, Argentina, Geophysical Journal International, 147, 356–366, 2001.

    Article  Google Scholar 

  • Tomezzoli, R. N., Paleogeography of Southwest Gondwana boundary during the Upper Paleozoic, Eos Trans. AGU, 86(18), Jt. Assem. Suppl., Abstract GP41A-03, 2005.

  • Tomezzoli, R. N. and J. F. Vilas, Paleomagnetismo y fábrica magnética en afloramientos cercanos a las Sierras Australes de la Provincia de Buenos Aires (López Lecube y González Chaves), Revista Asoc. Geol. Argentina, 52(4), 419–432, 1997.

    Google Scholar 

  • Tomezzoli, R. N. and J. F. Vilas, Paleomagnetic constraints on age of deformation of the Sierras Australes thrust and fold belt, Argentina, Geophysical Journal International, 138, 857–870, 1999.

    Article  Google Scholar 

  • Tomezzoli, R. N. and R. N. Melchor, Estudio paleomagnético preliminar en el miembro superior de la Formacion Carapacha, provincia de La Pampa. 19° Reunión de la Asociación Argentina de Geofísicos y Geodestas. 1as, Jornadas de Catastro Minera, I, 106–110, San Juan, 1997.

    Google Scholar 

  • Tomezzoli, R. N., W. D. MacDonald, and H. Tickyj, Composite magnetic fabrics from S-C granitic gneiss of Cerro de los Viejos, La Pampa province, Argentina, Journal of Structural Geology, 25/2, pp. 159–169, 2003.

    Article  Google Scholar 

  • Tomezzoli, R. N., L. Kleiman, J. Salvarredi, C. Terrizzano, and E. O. Cristallini, Paleogeographic evolution of the Southwest Gondwana boundary during the late Paleozoic. Paleomagnetism of the lower Choiyoi volcanics in the San Rafael block, Mendoza, Argentina. ISAG. Extended Abstracts, 730–733. Barcelona, 2005.

    Google Scholar 

  • Valencio, D. A., J. F. Vilas, and J. E. Mendia, Paleomagnetism of a sequence of red beds of the middle and the upper sections of Paganzo Group (Argentina) and the correlation of upper Paleozoic-lower Mesozoic rocks, Geophysical Journal Royal astronomical Society, 51, 59–74, 1977.

    Article  Google Scholar 

  • Van der Voo, R., The reliability of paleomagnetic data, Tectonophysics, 184, 1–9, 1990.

    Article  Google Scholar 

  • Van der Voo, R., Paleomagnetism of the Atlantic, Tethys and lapetus Oceans, Cambridge University Press, pp. 411, 1993.

    Book  Google Scholar 

  • Veevers, J. J., C. McA. Powell, J. W. Collinson, and O. R. López Gamundí, Synthesis, in Permian-Triassic Basins and Foldbelts along the Panthalassan Margin of Gondwanaland, edited by J. J. Veevers and McA. Powell, Geol. Soc. of America. Memoir, 184, 331–354, 1994.

    Article  Google Scholar 

  • Zijderveld, A. C., Demagnetization of rocks: Analysis of results, in Methods in Paleomagnetism, edited by D. W. Collinson, K. M. Creer, and S. K. Runcorn, Elsevier, pp. 254–286, Amsterdam, 1967.

    Google Scholar 

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Authors and Affiliations

  1. CONICET-Consejo Nacional de Investigaciones Cieníficas y Técnicas, Argentina

    Renata N. Tomezzoli & Ricardo N. Melchor

  2. F.C.E. y N., Departamento de Ciencias Geológicas, Universidad de Buenos Aires, Pab. II., Ciudad Universitaria, C1428EHA, CABA, Argentina

    Renata N. Tomezzoli

  3. Universidad Nacional de La Pampa, Av. Uruguay 151, 6300, Santa Rosa, La Pampa, Argentina

    Ricardo N. Melchor

  4. State University of New York, Binghamton, NY, 13902-6000, USA

    William D. MacDonald

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  1. Renata N. Tomezzoli
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Correspondence to Renata N. Tomezzoli.

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Tomezzoli, R.N., Melchor, R.N. & MacDonald, W.D. Tectonic implications of post-folding Permian magnetizations in the Carapacha Basin, La Pampa province, Argentina. Earth Planet Sp 58, 1235–1246 (2006). https://doi.org/10.1186/BF03352619

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