TECTONICA CUATERNARIA EN EL RETROARCO ANDINO A LA LATITUD DEL VOLCÁN TROMEN (37°S)

Guido Gianni, Lucía Sagripanti, Andrés Folguera, Mauro Spagnuolo, Mario Giménez

Resumen


Estudios recientes focalizados en las vecindades del volcán Tromen, en el norte de la Provincia de Neuquén, indican la presencia de estructuras afectando rocas de edad cuaternaria. En particular, un análisis detallado del flanco occidental del volcán Tromen muestra amplias zonas de deformación neotectónica, de las cuales sólo habían sido reconocidos sus sectores frontales. Se detallan geometría y mecanismos asociados a las principales estructuras cuaternarias a través de los dos valles principales que afectan este flanco volcánico. La coexistencia de estructuras neotectónicas contraccionales y distensivas es descripta como un rasgo distintivo. Así, el campo de esfuerzos asociado a este conjunto de estructuras es discutido: Mientras algunos estudios previos puntualizan que la deformación sería de carácter contraccional, otros apuntan a un régimen predominantemente distensivo. Finalmente, se plantean alternativas a estos esquemas en base a los nuevos datos.



Citas


Backé, G.; Hervouët, Y.; Dhont, D. 2006. Cenozoic extension vs. Compression in the central Neuquén basin (S 37º - S 36º, Argentina). En Kay, S., Ramos, V. y Dickinson, W. (eds.). Backbone of the Americas: Ridge collision, shallow subduction and plateau uplift. Geological Society of America Memoir: 111-112.

Bermúdez, A.; Delpino, D.; Frey, F.; Saal, A. 1993. Los basaltos de retroarco extraandinos. 12 Congreso Geológico Argentino y 2 Congreso de Exploración de Hidrocarburos. Relatorio I 13:161-172. Mendoza.

Branquet, Y. y Van Wyk de Vries, B. 2001. Effects of volcanic loading on regional compressive structures: new insights from natural examples and analogue modelling. Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science 333: 455-461.

Burd, A.; Booker, J.R.; Pomposiello, M.C.; Favetto, A.; Larsen, J.; Giordanengo, G.; Bernal, L.O. 2008. Electrical conductivity beneath the Payún Matrú Volcanic Field in the Andean back-arc of Argentina near 36.5°S: Insights into the magma source. 7 International Symposium on Andean Geodynamics. Resúmenes extendidos: 90-93. Nice.

Burd, A., Booker, J., Mackie, R., Favetto, A., Pomposielo, M., 2013. Three-dimensional electrical conductivity in the mantle beneath the Payún Matrú Volcanic Field in the Andean back-arc of Argentina near 36.5ºS: Decapitation of a mantle plume by resurgent upper mantle shear during slab steepening?. Geophysical Journal International: 1-12.

Burns, W. M.; Jordan, T.; Copeland, P. y Kelley, S. 2006. The case for extensional tectonics in the Oligocene-Miocene southern Andes as recorded in the Cura Mallín basin (36°–38°S). En S. Kay, M., and Ramos, V. A. (eds) Evolution of an Andean Margin: A Tectonic and Magmatic View From the Andes to the Neuquén Basin (35°–39°S latitude). Special Paper Geological Society of America 407: 163–184.

Charrier, R.; Baeza, O.; Elgueta, S.; Flynn, J.; Gans; P.; Kay, S.; Muñoz, N.; Wyss, A.; Zurita, E. 2002. Evidence for Cenozoic extensional basin development and tectonic inversion south of the flat-slab segment, southern Central Andes, Chile (33º -36ºSL). Journal of South American Earth Sciences 15: 117-139.

Cobbold, P.R.; Diraison, M.; Rossello, E.A. 1999. Bitumen veins and Eocene transpression, Neuquén basin, Argentina. Tectonophysics 314: 423–442.

Cobbold, P.R., Rossello, E.A., 2003. Aptian to recent compressional deformation of the Neuquén Basin, Argentina. Marine and Petroleum Geology 20: 429–443.

Faccenna, C.; Nalpas, T.; Brun, J.-P.; Davy, P.; 1995. The influence of pre-existing thrust faults on normal fault geometry in nature and in experiments. Journal of Structural Geology 17: 1139 – 1149.

Folguera, A.; Ramos, VA.; González Díaz, E.F.; Hermanns, R. 2006. Miocene to Quaternary deformation of the Guanacos fold-and-thrust-belt in the Neuquén Andes between 37° and 37°30'S. En Kay, S.; y Ramos, V. (eds) Evolution of an Andean margin: A tectonic and magmatic view from the Andes to the Neuquén Basin (35°-39°S lat) Geological Society of America, Special Paper 407: 247-266.

Folguera, A.; Bottesi, G.; Zapata, T.R.; Ramos, V.A. 2008. Crustal collapse in the Andean back-arc since 2 Ma: Tromen volcanic plateau, Southern Central Andes (36°40’-37°30’S). Tectonophysics 459: 140-160.

Folguera, A.; Naranjo, J.A.; Orihashi, Y.; Sumino, H.; Nagao, K. 2009. Retroarc volcanism in the northern San Rafael Block (34°-35°30’S), southern Central Andes: Occurrence, age, and tectonic setting. Journal of Volcanology and Geothermal Research 186: 169-185.

Folguera, A.; Ramos, V.A., 2011. Repeated eastward shifts of arc magmatism in the Southern Andes: a revision to the long-term pattern of Andean uplift and magmatism. Journal of South American Earth Sciences 32: 531–546.

Folguera A.; Alasonati Tašárová Z.; Götze H.J.; Rojas Vera E.; Giménez M.; Ramos V.A. 2012. Retroarc extension in the last 6 Ma in the South-Central Andes (36°S-40°S) evaluated through a 3-D gravity modeling. Journal of South American Earth Sciences 40: 23-27.

Franchini, M.B.; López Escobar, L.; Shalamuk, I.B.A.; Meinert, L.D. 2003. Paleocene calc-alkaline subvolcanic rocks from Nevazón Hill area (NW Chos Malal fold belt), Neuquén, Argentina, and comparison with granitoids of the Neuquén- Mendoza volcanic province. Journal of South American Earth Sciences 16: 99-422.

Franzese, J.; Spalletti, L. A.; Perez, I. G. y Macdonald D. 2003. Tectonic and paleoenvironmental evolution of Mesozoic sedimentary basins along the Andean foothills of Argentina (32°–54°S). Journal of South American Earth Sciences , 16: 81– 90.

Galland, O.; Hallot, E.; Cobbold, P.; Ruffet, G.; d'Ars, J. 2007. Volcanism in a compressional Andean setting: a structural and geochronological study of Tromen volcano (Neuquén province, Argentina). Tectonics 26, (TC4010).

Germa, A.; Quidelleur, X.; Gillot, P.Y.; Tchilinguirian, P. 2010. Volcanic evolution of the back-arc Pleistocene Payun Matru volcanic field (Argentina). Journal of South American Earth Sciences 29: 717-730.

Groeber, P. 1929, Líneas fundamentales de la geología del Neuquén, sur de Mendoza y regiones adyacentes. Ministerio de Agricultura, Dirección General de Minas, Geología y Hidrología: 110 p. Buenos Aires.

Gudnason, J.; Holm ,P.M.; Søager, N.; Llambías, E. 2012. Geochronology of the late Pliocene to recent volcanic activity in the Payenia back-arc volcanic province, Mendoza Argentina Journal of South American Earth Sciences 37: 191–20.

Guzmán, C., E. Cristallini, y G. Bottesi (2007), Contemporary stress orientations in the Andean retroarc between 34°S and 39°S from borehole breakout analysis, Tectonics, 26, TC3016.

Havestadt, B. 1752. Mapa geográfico y diario del Padre Bernardo Havestadt (itinerario). En el cual se detallan las provincias, ciudades, sitios, días y leguas que en los últimos meses del año 1751 y primeros meses del año 1752 recorrió, viajando por los dominios de los indios chilenos, el padre Bernardo Havestadt, misionero de la Compañía de Jesús. (disponible en http://es.wikisource.org/wiki/Memorias_de_Bernardo_Havestadt)

Heuret, A. y Lallemand, S. 2005. Plate motions, slab dynamics and back-arc deformation. Physics of the Earth and Planetary Interiors 149: 31–51.

Heuret, A.; F. Funiciello; Faccenna, C., y Lallemand, S. 2007. Plate kinematics, slab shape and back-arc stress: A comparison between laboratory models and current subduction zones, Earth and Planetary Science Letters 256: 473–483.

Holmberg, E. 1975. Descripción geológica de la Hoja 32c, Buta Ranquil, Provincia de Mendoza-Neuquén. Servicio Geológico Minero Argentino. Boletín152: 71. Buenos Aires.

Jarrard, R. D. (1986), Relations among subduction parameters. Reviews of Geophysics., 24: 217–284.

Kay, S.M., 2002. Tertiary to Recent transient shallow subduction zones in the Central and Southern Andes. 15 Congreso Geológico Argentino. Actas 3: 282–283. El Calafate.

Kay, S.M.; Burns, M.; Copeland, P. 2006. Upper Cretaceous to Holocene Magmatism over the Neuquén basin: Evidence for transient shallowing of the subduction zone under the Neuquén Andes (36ºS to 38ºS latitude). En S. Kay, M., and Ramos, V. A. (eds) Evolution of an Andean Margin: A Tectonic and Magmatic View From the Andes to the Neuquén Basin (35°–39°S latitude). Geological Society of America, Special Paper, 407: 19-60. USA.

Lavenu, A.; Cembrano, J. 1999. Compressional- and tranpressional- stress pattern for Pliocene and Quaternary brittle deformation in fore arc and intra - arc zones (Andes of Central and Southern Chile). Journal of Structural Geology 21: 1669 - 1691.

Llambías, E.J.; Danderfer, J.C.; Palacios, M.; Brogioni, N. 1978. Las rocas ígneas Cenozoicas del Volcán Domuyo y áreas adyacentes. In Congreso Geológico Argentino, No. 7, Actas 2: 569-584. Neuquén.

Llambías, E. J.; Rapela, C. W. 1989. Las vulcanitas de Collipilli, Neuquén (37°S) y su relación con otras unidades paleógenas de la cordillera. Asociación Geológica Argentina Revista 44: 224–236.

Llambías, E.J.; Bertotto, G.W.; Risso, C.; Hernando, I.R. 2010. El volcanismo cuaternario en el retroarco de Payenia: una revisión. Revista de la asociación Geológica Argentina 67: 278-300.

Lallemand, S.; Heuret, A. y Boutelier, D. 2005. On the relationships between slab dip, back‐arc stress, upper plate absolute motion, and crustal nature in subduction zones, Geochemistry, Geophysics, Geosystems 6.

Manceda, R.; Figueroa, D. 1995. Inversion of the Mesozoic Neuquén rift in the Malargüe fold and thrust belt, Mendoza, Argentina. En Tankard, A.J., Suárez, R.S., Welsink, H.J., (eds) Petroleum Basins of South America American. Association of Petroleum Geologists, 62: 369–382.

Marques, F. O., Cobbold, P. R., 2002, Topography as a major factor in the development of arcuate thrust belts: Insights from sandbox experiments. Tectonophysics 348: 247 – 268.

Melnick, D.; Folguera, A.; Ramos, V. A. 2006. Structural control on arc volcanism: The Caviahue - Copahue complex, Central to Patagonian Andes transition (38ºS). Journal of South American Earth Sciences, 22: 66 – 88.

Messager G., Nivière B., Martinod J., Lacan P., and Xavier J.P., 2010. Geomorphic evidence for Plio‐Quaternary compression in the Andean foothills of the southern Neuquén Basin, Argentina. Tectonics 29 (TC4003).

Muñoz, J.; Stern, C. 1988. The Quaternary volcanic belt of the southern continental margin of South America: Transverse structural and petrochemical variations across the segment between 38°S and 39°S. Journal of South American Earth Sciences 1: 147-161.

Quezada, J.; Bataille, K. 2008. Subduction partitioning evidenced by crustal earthquakes along the Chilean Andes. 7 International Symposium on Andean Geodynamics, Resúmenes extendidos, 413 - 416. Nice.

Quidelleur, X.; Carlut, J.; Tchilinguirian, P.; Germa, A.; Gillot, P.-Y., 2009. Paleomagnetic directions from mid-latitude sites in the southern hemisphere (Argentina): contributions to time averaged field models. Physics of the Earth and Planetary Interiors 172: 199-20.

Ramos, V.A., 1977. Geología y Recursos Naturales de la Provincia de Neuquén, 7 Congreso Geológico Argentino. Actas I: 9–24. Neuquén.

Ramos, V.A.; Folguera, A., 2005. Tectonic evolution of the Andes of Neuquén: constraints derived from the magmatic arc and foreland deformation. En Veiga, G.D., Spalletti, L., Howell, J.A., Schwarz, E. (eds) The Neuquén Basin: A Case Study in Sequence Stratigraphy and Basin Dynamics. Geological Society, Special Publications: 15–35. London.

Ramos, V.A.; Folguera, A. 2010. Payenia volcanic province in the Southern Andes: An appraisal of an exceptional Quaternary tectonic setting. Journal of Volcanology and Geothermal Research 201: 53-64.

Sagripanti, L.; Rojas Vera, E.; Gianni, G.; Rusconi, F.; Ruiz, F.; Folguera, A.; Ramos, V. 2012. Transtensive to transpressive neotectonic reactivation of a fold and thrust belt: The Tromen volcanic plateau in the southern Central Andes. 13 Congreso Geológico Chileno, actas electrónica. Antofagasta.

Schellart, W. P.; J. Freeman; D. R. Stegman; L. Moresi, and D. May 2007. Evolution and diversity of subduction zones controlled by slab width. Nature, 446: 308–311.

Schellart, W. P. 2008. Overriding plate shortening and extension above subduction zones: A parametric study to explain formation of the Andes Mountains. Geological Society of America Bulletin 120: 1441–1454.

Spagnuolo, M.G.; Litvak, V.; Folguera, A.; Bottesi, G.; Ramos V.A. 2012a. Neogene magmatic expansion and mountain building processes at the southern Central Andes, 36º-37ºS. Argentina. Journal of Geodynamics 53: 81 – 94.

Spagnuolo, M. G.; Folguera, A.; Litvak, V.; Rojas Vera, E.; Ramos, V. A. 2012b. Late Cretaceous arc Rocks in the Andean retroarc region at 36,5ºS: Evidence supporting a late Cretaceous slab shallowing. Journal of South American Earth Sciences 38: 44-56.

Vergani, G. D.; Tankard, A. J.; Belotti H. J. y H. J.Welsink (1995), Tectonic evolution and paleogeography of the Neuquén basin, Argentina. En A. J. Tankard; R. Suárez, y H. J. Welsink; (eds) Petroleum Basins of South America, AAPG Mem., 62: 383–402. USA.

Yuan, X.; Asch, G.; Bataillek, K.; Bock, G.; Bohm, M.; Echtler, H.; Kind, R.; Oncken, O.; Wólbern, I. 2006. Deep seimic images of the Southern Andes. En Kay, S., Ramos, V.A., (eds) Late Cretaceous to Recent Magmatism and Tectonism of the Southern Andean Margin at the Latitude of the Neuquen Basin (36-39 S), GSA Special paper 407: 61-72.

Zapata, T.; Brissón, I.; Dzelalija, F.; 1999. The role of the basement in the Andean fold and thrust belt of the Neuquén Basin. Argentina: Thrust tectonics ′99 Conference: 122–124.

Zapata, T.R.; Folguera, A. 2005. Tectonic evolution of the Andean fold and thrust belt, south of the Barrancas River, Neuquén Basin, Argentina. En Veiga, G.D., Spalletti, L., Howell, J.A., Schwarz, E., (eds) The Neuquén Basin: A Case Study in Sequence Stratigraphy and Basin Dynamics, Geological Society, Special Publications 252: 37–56. London.

Zollner, W.; Amos, A., 1973. Descripción Geológica de la Hoja 32b, Chos Malal (1:200,000). Carta Geológico Económica de la República Argentina 143: 91. Buenos Aires.


Texto completo



Licencia Creative Commons
Los trabajos publicados en esta revista están bajo la licencia Creative Commons Atribución-NoComercial 2.5 Argentina.

Revista de la Asociación Geológica Argentina. ISSN en línea 1851-8249.ISSN impreso 0004-4822. ISSN CD-ROM 2250-5571. Registro de la Propiedad Intelectual Nº 52500703. Asociación Geológica Argentina. Maipú 645 (1006), Buenos Aires, República Argentina. Teléfono y Fax:  (+54) 11 4325 3104. http://www.geologica.org.ar/ secretaria@geologica.org.ar