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Cretaceous slab segmentation in southwestern Gondwana

Published online by Cambridge University Press:  16 September 2009

MANUEL SUÁREZ ,
RITA DE LA CRUZ ,
MICHAEL BELL  and
ALAIN DEMANT
MANUEL SUÁREZ*
Affiliation:
Servicio Nacional de Geología y Minería, Avenida Santa María 0104, Santiago, Chile
RITA DE LA CRUZ
Affiliation:
Servicio Nacional de Geología y Minería, Avenida Santa María 0104, Santiago, Chile
MICHAEL BELL
Affiliation:
University of Gloucestershire, Cheltenham GL50 4AZ, UK
ALAIN DEMANT
Affiliation:
Petrologie Magmatique, Université Aix-Marseille-3, case 441, 13397 Marseille cedex 20, France
*
†Author for correspondence: [email protected]
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Abstract

The Mesozoic Austral Basin of Patagonia, in southwestern Gondwana, experienced a major tectonic segmentation during Aptian times. Sometime between 121 and 118 Ma (Aptian), the northern part of the Austral Basin, known as the Aisén Basin or Río Mayo Embayment, was inverted, with the sediments overlain by calc-alkaline subaerial volcanic rocks of Aptian to Maastrichtian age. In the southern segment of the Austral Basin, known as the Magallanes Basin, predominantly marine sediments accumulated until Cenozoic times in a back-arc position, relative to a magmatic arc located to the west. The subduction-related N–S-trending volcanic chains of both segments were geographically displaced during Aptian to Late Cretaceous times. In the Aisén segment north of ~49–50° S, the volcanic chain was located further east than the coeval arc in the Magallanes segment. A transform fault connected the trenches of both segments, with the Aisén segment dipping at a shallower angle than the Magallanes segment.

Keywords

slabsegmentationCretaceousPatagoniaChileGondwana
Type
Original Article
Information
Geological Magazine , Volume 147 , Issue 2 , March 2010 , pp. 193 - 205
Copyright
Copyright © Cambridge University Press 2009

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References

Aguirre-Urreta, M. B. & Ramos, V. A. 1981. Estratigrafía y Paleontología de la Alta Cuenca del Río Roble, provincia de Santa Cruz. In Congreso Geológico Argentino No. 8°, Actas 3 (eds Nullo, F. E., Ploszkiewicz, V. & Marin, G.), pp. 101–32. Buenos Aires.Google Scholar
Baker, P. E., Rea, W. J., Skarmeta, J., Caminos, R. & Rex, D. C. 1981. Igneous history of the Andean cordillera and Patagonian plateau around latitude 46° S. Philosophical Transactions of the Royal Society A303, 105–49.Google Scholar
Beaubouef, R. T. 2004. Deep-water leveed-channel complexes of the Cerro Toro Formation, Upper Cretaceous, southern Chile. American Association of Petroleum Geologists 88, 1471–1500.CrossRefGoogle Scholar
Bell, C. M. 2004. Asteroid and ophiuroid trace fossils from the Lower Cretaceous of Chile. Palaeontology 47, 51–66.CrossRefGoogle Scholar
Bell, C. M. & Suárez, M. 1997. The Lower Cretaceous Apeleg Formation of the Aisén basin, southern Chile. Tidal sandbar deposits of an epicontinental sea. Revista Geológica de Chile 24, 203–26.Google Scholar
Biddle, K. T., Uliana, M. A., Mitchum, R. M. Jr, Fitzgerald, M. G. & Wright, R. C. 1986. The stratigraphic and structural evolution of the central and eastern Magallanes basin, southern South America. In Foreland Basins (eds Allen, P. A. & Homewood, P.), pp. 41–62. Oxford: Blackwell Scientific Publications.CrossRefGoogle Scholar
Bruce, R. M., Nelson, E. P., Weaver, S. G. & Lux, D. R. 1991. Temporal and spatial variation in the southern Patagonian batholith; constraints on magmatic arc development. In Andean magmatism and its tectonic setting (eds Harmon, R. S. & Rapela, C. W.), pp. 1–12. Geological Society of America, Special Paper no. 265.Google Scholar
Bumby, A. J. & Guiraud, R. 2005. The geodynamic setting of the Phanerozoic basins of Africa. Journal of African Earth Sciences 43, 1–12.CrossRefGoogle Scholar
Butler, R. F., Hervé, F., Munizaga, F., Beck, M. & Oviedo, E. 1991. Paleomagnetism of the Patagonian Plateau Basalts, southern Chile and Argentina. Journal of Geophysical Research 96 (B4), 6023–34.CrossRefGoogle Scholar
Caminos, R. 1999. (ed.) Geologia Argentina. Servicio Geológico Minero Argentino. Instituto de Geología y Recursos Minerales. Anales 29, 796 pp.Google Scholar
Cecioni, G. O. 1957. Cretaceous flysch and molasse in Departamento Ultima Esperanza, Magallanes Province, Chile. American Association of Petroleum Geologists Bulletin 41, 538–64.Google Scholar
Choe, M. Y., Sohn, Y. K., Jo, H. R. & Kim, Y. 2004. Sedimentary facies and evolution of the Cretaceous deep-sea channel system in Magallanes Basin, southern Chile. Ocean and Polar Research 26, 385–400.CrossRefGoogle Scholar
Covacevich, V., De La Cruz, R. & Suárez, M. 1994. Primer hallazgo de fauna del Berriasiano Inferior (Neocomiano) en la Formación Ibáñez, Región XI, Aisén. In Congreso Geológico Chileno No. 7 (eds Cecioni, A. & Campos, E.), pp. 425–9. Concepción.Google Scholar
Dalziel, I. W. D., De Wit, M. J. & Palmer, K. F. 1974. Fossil marginal basin in the southern Andes. Nature 250, 291–4.CrossRefGoogle Scholar
De La Cruz, R. & Suárez, M. 2006. Geología del área de Puerto Guadal–Puerto Sánchez, Región de Aisén del General Carlos Ibáñez del Campo. Servicio Nacional de Geología y Minería, Carta Geológica de Chile, Serie Geología Básica No. 95: 58 pp. Map scale 1:100,000.Google Scholar
De La Cruz, R. & Suárez, M. 2008. Geología del área Chile Chico–Río de Las Nieves, Región Aisén del General Carlos Ibáñez del Campo. Servicio Nacional de Geología, Carta Geológica de Chile, Serie Geología Básica No. 112: 67 pp. Map scale 1:100,000.Google Scholar
De La Cruz, R., Suárez, M., Belmar, M., Quiroz, D. & Bell, M. 2003. Geología del área Coihaique–Balmaceda, Región Aisén del General Carlos Ibáñez del Campo. Servicio Nacional de Geología y Minería, Carta Geológica de Chile, Serie Geología Básica 80, 40 pp. Map scale 1:100,000.Google Scholar
De La Cruz, R., Suárez, M., Covacevich, V. & Quiroz, D. 1996. Estratigrafía de la zona de Palena y Futaleufú (43°15′–43°45′ Latitude S), X Región, Chile. In Congreso Geológico Argentino No. 13 y III Congreso de Exploración de Hidrocarburos No. 3 (eds Ramos, V., Aguirre-Urreta, M. B., Gulisano, C., Kozlowski, E., Limarino, O., Méndez, V., Mendía, J. E., Mozetic, M., Ortiz, A., Rapela, C., Riccardi, A., Robbiano, J. A., Turic, M. A., Vega, V. A. & Irigoyen, M.), pp. 417–24. Actas 1. Buenos Aires.Google Scholar
De La Cruz, R., Welkner, D., Suárez, M. & Quiroz, D. 2004. Geología del Área Oriental de las Hojas Cochrane y Villa O'Higgins, Región Aisén del General Carlos Ibáñez del Campo. Servicio Nacional de Geología y Minería, Carta Geológica de Chile, Serie Geología Básica 85, 57 pp. Map scale 1:250,000.Google Scholar
Demant, A., Suárez, M. & De La Cruz, R. 2007 a. Geochronology and petrochemistry of Late Cretaceous–(?)Paleogene volcanic sequences from the eastern central Patagonian Cordillera (45°–45°40′S). Revista Geológica de Chile 34, 3–21.CrossRefGoogle Scholar
Demant, A., Suárez, M. & De La Cruz, R. 2007 b. Lower Cretaceous surtseyan volcanoes in the eastern central Patagonian Cordillera (45°15′–45°40′S): the Baño Nuevo volcanic complex. In Geosur 2007: An international congress on the Geology and Geophysics of the Southern Hemisphere (eds Hervé, F. & Demant, A.), p. 51. Santiago.Google Scholar
DeVries, M. B. & Lindholm, R. M. 1994. Internal architecture of a channel-levee complex, Cerro Toro Formation, southern Chile. In Submarine fans and turbidite systems: Sequence stratigraphy, reservoir architecture and production characteristics. (eds Weimer, P. A., Bouma, H. & Perkins, B. F.), pp. 105–14. Gulf Coast Section, Society for Sedimentary Geology (SEPM), 15th Annual Research Conference.Google Scholar
Dickinson, W. R. 1985. Interpreting provenance relations from detrital modes of sandstones. In Provenance of Arenites (ed. Zuffa, G. G.), pp. 333–61. NATO ASI Series C 148. Dordrecht: Reidel Publishing Co.CrossRefGoogle Scholar
Dott, R. H., Winn, R. D. & Smith, C. H. L. 1976. Cretaceous conglomerates and associated flysch on the southern Andes. Antarctic Journal of the U. S. 11, 93–4.Google Scholar
Dott, R. H., Winn, R. D. & Smith, C. H. L. 1982. Relationship of Mesozoic and Early Cenozoic sedimentation to tectonic evolution of the southernmost Andes and Scotia Arc. In Antarctic Geoscience (ed. Craddock, C.), pp. 193–201. Wisconsin: University of Wisconsin Press.Google Scholar
Eagles, G. 2007. New angles on South Atlantic opening. Geophysical Journal 168, 353–61.CrossRefGoogle Scholar
Fildani, A., Cope, T., Graham, S. A. & Wooden, J. 2003. Initiation of the Magallanes foreland basin: timing of the southernmost Patagonian Andes orogeny revised by detrital zircon provenance analysis. Geology 31, 1081–4.CrossRefGoogle Scholar
Fildani, A. & Hessler, A. M. 2005. Stratigraphic record across a retro-arc basin inversion: Rocas Verdes-Magallanes Basin, Patagonian Andes. Geological Society of America Bulletin 117, 1596–1614.CrossRefGoogle Scholar
Fildani, A., Romans, B., Fosdick, J. C., Crane, W. H. & Hubbard, S. M. 2008. Orogenesis of the Patagonian Andes as reflected by basin evolution in southernmost South America. In Circum-Pacific Tectonics, Geologic Evolution, and Ore Deposits (eds Spencer, J. E. & Titley, S. R.), pp. 1–10. Arizona Geological Society, Digest 22. Tucson, Arizona.Google Scholar
Fitzgerald, M. G., Mitchum, R. M., Uliana, M. A. & Biddle, K. T. 1990. Evolution of the San Jorge Basin, Argentina. American Association of Petroleum Geologists Bulletin 74, 879–920.Google Scholar
Giacosa, R. & Franchi, M. 2001. Hojas Geológicas 4772-III y 4772-IV, Lago Belgrano y Lago Posadas. Provincia de Santa Cruz. Instituto de Geología y Recursos Minerales. Servicio Geológico Minero Argentino 256, 1–68. Buenos Aires.Google Scholar
González-Bonorino, G. & Suárez, M. 1995. Paleoambientes sedimentarios de la Formación Apeleg, Cretácico Inferior de la Cuenca de Aisén, XI Región, Chile. Revista Geológica de Chile 22, 115–26.Google Scholar
Gradstein, F. M., Ogg, J. G. & Smith, A. G. 2005. A Geologic Time Scale 2004. Cambridge University Press, 500 pp.CrossRefGoogle Scholar
Grunow, A. M. 1993. New paleomagnetic data from the Antarctic Península and their tectonic implications. Journal of Geophysical Research 98 (B8), 13815–33.CrossRefGoogle Scholar
Gust, D. A., Biddle, K. T., Phelps, D. W. & Uliana, M. A. 1985. Associated Middle to Late Jurassic volcanism and extension in southern South America. Tectonophysics 116, 223–53.CrossRefGoogle Scholar
Haller, M. & Lapido, O. 1980. El Mesozoico de la Cordillera Patagónica Central. Revista de la Asociación Geológica Argentina 35, 230–47.Google Scholar
Hervé, F., Miller, H. & Pimpirev, C. 2006. Patagonia–Antarctica connections before Gondwana break-up. In Antarctica: contribution to global Earth-Sciences (eds Fütterer, D. K., Damaske, D., Kleinschmidt, G., Miller, H. & Tessensohn, F.), pp. 217–28. Berlin, Heidelberg, New York: Springer-Verlag.CrossRefGoogle Scholar
Hervé, F., Pankhurst, R. J., Fanning, M., Calderón, M. & Yaxley, G. M. 2007. The South Patagonian batholith: 150 my of granite magmatism on a plate margin. Lithos 97, 373–94.CrossRefGoogle Scholar
Hervé, M., Suárez, M. & Puig, A. 1984. The Patagonian batholith south of Tierra del Fuego: timing and tectonic implications. Journal of the Geological Society, London 141, 909–17.CrossRefGoogle Scholar
Iannizzotto, N. F., Folguera, A., Leal, P. R. & Iaffa, D. 2004. Control tectónico de las secuencias volcaniclásticas neocomianas y paleogeografía en la zona del Lago La Plata (45°S). Sector interno de la faja plegada y corrida de los lagos La Plata y Fontana. Revista de la Asociación Geológica Argentina 59, 1–21.Google Scholar
Jacques, J. M. 2003. A tectonostratigraphic synthesis of the sub-andean basins: implications for the geotectonic segmentation of the Andean belt. Journal of the Geological Society, London 160, 687–701.CrossRefGoogle Scholar
Katz, H. R. 1963. Revision of Cretaceous stratigraphy in Patagonian Cordillera of Ultima Esperanza, Magallanes province, Chile. American Association of Petroleum Geologists Bulletin 47, 506–24.Google Scholar
Kraemer, P. E. & Riccardi, A. C. 1997. Estratigrafía de la región comprendida entre los lagos Argentino y Viedma (49°40’–50°10’ lat. S), Provincia de Santa Cruz. Revista de la Asociación Geológica Argentina 52, 333–60.Google Scholar
Martin, M., Pankhurst, R. J., Fanning, C. M., Thomson, S. N., Calderón, M. & Hervé, F. 2001. Age distribution of plutons across the southern Patagonian batholith: new U–Pb age data on zircons. In Third South American Symposium of Isotope Geology, pp. 585–8. Pucón: CD-ROM, SERNAGEOMIN. Santiago.Google Scholar
Natland, M. L., González, E., Cañón, A. & Ernst, M. 1974. A system of stages for correlation of Magallanes Basin sediments. Geological Society of America Memoir 139, 126 pp.Google Scholar
Olivero, E. B. 1987. Cefalópodos y bivalvos titonianos y hauterivianos de la Formación Lago La Plata, Chubut. Ameghiniana 24, 181–202.Google Scholar
Olivero, E. B. & Aguirre-Urreta, M. B. 2002. Sucesión de amonoideos de la Formación Katterfeld (Valanginiano–Hauteriviano) en su área tipo, Lago Fontana, Chubut. In Congreso Geológico Argentino No. 15, Actas I (eds Cingolani, C. A., Cabaleri, N., Linares, E., López de Luchi, M. G. Ostera, H. A. & Panarello, H. O.), pp. 485–90. El Calafate.Google Scholar
Pankhurst, R. J., Hervé, F., Fanning, M. & Suárez, M. 2003. Coeval plutonic and volcanic activity in the Patagonian Andes: the Patagonian Batholith and the Ibáñez and Divisadero Formations, Aisén, southern Chile. In Congreso Geológico Chileno No. 10 (ed. Campos, E.). Actas CD-ROM. Concepción.Google Scholar
Pankhurst, R. J., Leat, P. T., Sruoga, P., Rapela, C. W., Márquez, M., Storey, B. C. & Riley, T. R. 1998. The Chon-Aike silicic igneous province of Patagonia and related rocks in West Antarctica: a silicic LIP. Journal of Volcanology and Geothermal Research 81, 113–36.CrossRefGoogle Scholar
Pankhurst, R. J., Riley, T. R., Fanning, C. M. & Kelley, S. P. 2000. Episodic silicic volcanism in Patagonia and the Antarctic Peninsula: chronology of magmatism associated with the break-up of Gondwana. Journal of Petrology 41, 605–25.CrossRefGoogle Scholar
Panza, J. L. 2001. Hoja Geológica 44769-IV, Monumento Natural Bosques Petrificados. Provincia de Santa Cruz. Instituto de Geología y Recursos Minerales, Servicio Geológico Minero Argentino 258, 1–110.Google Scholar
Panza, J. L., Cobos, J. & Ragona, D. 1994. Mapa Geológico de la Provincia de Santa Cruz, República Argentina. Escala 1:750.000. Secretaría de Minería, Dirección Nacional del Servicio Geológico. Buenos Aires.Google Scholar
Panza, J. L., Cobos, J. C. & Zubía, M. 2001. Hoja Geológica 4769-III, Destacamento La María. Provincia de Santa Cruz. Instituto de Geología y Recursos Minerales, Servicio Geológico Minero Argentino 296, 1–84.Google Scholar
Parada, M. A., Lahsen, A. & Palacios, C. 1997. Jursassic extensional tectonomagmatism and associated mineralization of the El Faldeo polymetallic district, Chilean Patagonia (Aysén region): geochronological and isotopic evidence of crustal contribution. Mineralium Deposita 32, 547–54.CrossRefGoogle Scholar
Parada, M. A., Lahsen, A. & Palacios, C. 2001. Ages and geochemistry of Mesozoic-Eocene back-arc volcanic rocks in the Aysén region of the Patagonian Andes. Revista Geológica de Chile 28, 25–46.CrossRefGoogle Scholar
Ploszkiewcz, J. V. 1987. Descripción Geológica de la Hoja 17c Apeleg; Provincia del Chubut. Servicio Geológico Nacional, Carta Geológico-Económica de la República Argentina, escala 1:200.000. Boletín 204, 1–98. Buenos Aires, Argentina.Google Scholar
Ploszkiewicz, J. V. & Ramos, V. 1977. Estratigrafia y tectónica de la Sierra de Payaniyeu (Provincia del Chubut). Revista de la Asociación Geológica Argentina 32, 209–26.Google Scholar
Ramos, V. 1976. Estratigrafia de los Lagos La Plata y Fontana, Provincia de Chubut, República Argentina. In Congreso Geológico Chileno No. 1 (ed. Charrier, R.), pp. A43–A64. Santiago, Chile.Google Scholar
Ramos, V. 1981. Descripción geológica de la Hoja 47 (a, b), Lago Fontana. Servicio Geológico Nacional, Boletín 183, 1–130.Google Scholar
Ramos, V. A. 1989. Andean foothills structures in northern Magallanes Basin, Argentina. American Association of Petroleum Geologists Bulletin 73, 887–903.Google Scholar
Riccardi, A. C. & Rolleri, E. O. 1980. Cordillera patagónica Austral. In Geología Regional Argentina, pp. 1173–1306. Academia Nacional de Ciencias, Córdoba 2.Google Scholar
Riley, T. R., Leat, P. T., Pankhurst, R. J. & Harris, C. 2001. Origins of large-volume rhyolite volcanism in the Antarctic Peninsula and Patagonia by crustal melting. Journal of Petrology 42, 1043–65.CrossRefGoogle Scholar
Robbiano, J. A., Arbe, H. A. & Gangui, A. 1996. Cuenca Austral marina. In Congreso Geológico Argentino No. 13 y Congreso de Exploración de Hidrocarburos No. 3 (eds Ramos, V., Aguirre-Urreta, M. B., Gulisano, C., Kozlowski, E., Limarino, O., Méndez, V., Mendía, J. E., Mozetic, M., Ortiz, A., Rapela, C., Riccardi, A., Robbiano, J. A., Turic, M. A., Vega, V. A. & Irigoyen, M.), pp. 323–41. Buenos Aires.Google Scholar
Rolando, A. P., Hartmann, L. A., Santos, J. O. S., Fernandez, R. R., Etcheverry, R. O., Schalamuk, I. A. & Mcnaughton, N. J. 2002. SHRIMP zircon U–Pb evidence for extended Mesozoic magmatism in the Patagonian batholith and assimilation of Archaean crustal components. Journal of South American Earth Sciences 15, 267–83.CrossRefGoogle Scholar
Scott, K. M. 1966. Sedimentology and dispersal pattern of Cretaceous flysch sequence, Patagonian Andes, southern Chile. American Association of Petroleum Geologists Bulletin 50, 72–107.Google Scholar
Shultz, M. R. 2002. A submarine slope depositional model based on outcrops of the Tres Pasos Formation, Magallanes basin, southern Chile In Congreso Geológico Argentino No. 15, Actas I (eds Cingolani, C. A, Cabaleri, N., Linares, E., López de Luchi, M. G., Ostera, H. A. & Panarello, H. O.), pp. 814–18. El Calafate.Google Scholar
Skarmeta, J. & Castelli, J. C. 1997. Intrusión sintectónica del Granito de las Torres del Paine, Andes Patagónico de Chile. Revista Geológica de Chile 24, 55–74.Google Scholar
Stern, C. R. 1991. Isotopic composition of the Late Jurassic and early Cretaceous mafic igneous Rocks from the southernmost Andes: implications for sub-Andean mantle. Revista Geológica de Chile 18, 15–23.Google Scholar
Strelkov, E., De La Paz, M. & Baldi, J. 1994. Geología y características exploratorias de las secuencias neocomianas en el oeste de la provincia de Chubut-Argentina. Boletín de Informaciones Petroleras 38, 81–93.Google Scholar
Suárez, M. 1976. La Cordillera Patagónica: su división y relación con la Península Antártica. Anales del Instituto de la Patagonia 7, 105–13.Google Scholar
Suárez, M. 1978. Geología de la región al sur del Canal Beagle, Chile. Instituto de Investigaciones Geológicas, Carta Geológica de Chile 36, 1–48.Google Scholar
Suárez, M. 1979. A late Mesozoic island arc in the southern Andes, Chile. Geological Magazine 116, 181–90.CrossRefGoogle Scholar
Suárez, M. & De La Cruz, R. 2000. Tectonics in the eastern central Patagonian Cordillera (45°30′–47°30′S). Journal of the Geological Society, London 157, 995–1001.CrossRefGoogle Scholar
Suárez, M. & De La Cruz, R. 2001. Jurassic to Miocene K–Ar dates from eastern central Patagonian Cordillera plutons, Chile (45°–48°S). Geological Magazine 138, 53–66.CrossRefGoogle Scholar
Suárez, M., De La Cruz, R., Aguirre-Urreta, M. B. & Fanning, M. 2009. Relationship between volcanism and marine sedimentation in northern Austral (Aisén) Basin, central Patagonia: Stratigraphic, U–Pb SHRIMP and paleontologic evidence. Journal of South American Earth Sciences 27 (4), 309–25.CrossRefGoogle Scholar
Suárez, M., De La Cruz, R. & Bell, M. 1996. Estratigrafía de la región de Coyhaique (45°–46° latitud S); Cordillera Patagónica, Chile. In Congreso Geológico Argentino No. 13 y Congreso de Exploración de Hidrocarburos No. 3 (eds Ramos, V., Aguirre-Urreta, M. B., Gulisano, C., Kozlowski, E., Limarino, O., Méndez, V., Mendía, J. E., Mozetic, M., Ortiz, A., Rapela, C., Riccardi, A., Robbiano, J. A., Turic, M. A., Vega, V. A. & Irigoyen, M.), pp. 575–90. Buenos Aires.Google Scholar
Suárez, M., De La Cruz, R. & Bell, M. C. 2007. Geología del Área Ñireguao–Baño Nuevo, Región Aisén del General Carlos Ibáñez del Campo. Servicio Nacional de Geología y Minería, Carta Geológica de Chile, Serie Geología Básica 108, 1–56. Santiago.Google Scholar
Suárez, M., Demant, A. & De La Cruz, R. 1999. Volcanismo calcoalcalino en W Provincia Chon Aike: Grupo Ibáñez, Jurásico Superior–Cretácico Inferior temprano, Cordillera Patagónica de Aysén, Chile (45°30’–46°30’S). In Congreso Geológico Argentino No. 14 (eds Salfity, J. A., Alonso, R. N., Gorustovich, S. A., Hongn, F. D., Marquillas, R. A., Monaldi, C. R., Moye, M. C., Petrinovic, I. A. & Sánchez, M. C.), pp. 186–9. Salta.Google Scholar
Suárez, M., Demant, A., De La Cruz, R. & Fanning, M. 2005. Lower Cretaceous basaltic tuff cones in central Patagonian Cordillera (45°20′S), Aysén, Chile. In Congreso Geológico Argentino No. 16 (eds Llambías, E., de Barrio, R., González, P. & Leal, P.), pp. 303–4. La Plata, Argentina.Google Scholar
Suárez, M., Hervé, M. & Puig, A. 1985. Hoja Isla Hoste e islas adyacentes, XII Región. Servicio Nacional de Geología y Minería, Carta Geológica de Chile 65, 1–113. Santiago.Google Scholar
Suárez, M. & Márquez, M. 2007. A Toarcian back-arc basin of central Patagonia (Chubut), Argentina: Middle Jurassic closure and tectonic setting. Revista Geológica de Chile 34 (1), 63–79.CrossRefGoogle Scholar
Suárez, M. & Pettigrew, T. H. 1976. An Upper Mesozoic island-arc back-arc system in the southern Andes and South Georgia. Geological Magazine 113, 305–28.CrossRefGoogle Scholar
Weaver, S. G., Bruce, R., Nelson, E. P., Brueckner, H. K. & Lehuray, A. P. 1990. The Patagonian batholith at 48° S latitude, Chile; Geochemical and isotopic variations. In Plutonism from Antarctica to Alaska (eds Kay, S. M. & Rapela, C. W.), pp. 33–50. Geological Society of America, Special Paper no. 241.CrossRefGoogle Scholar
Wilson, T. J. 1991. Transition from back-arc to foreland basin development in the southernmost Andes: Stratigraphic record from the Ultima Esperanza District, Chile. Geological Society of America Bulletin 103, 98–111.2.3.CO;2>CrossRefGoogle Scholar
Winn, R. D. & Dott, R. H. 1978. Submarine-fan turbidites and resedimented conglomerates in a Mesozoic arc-rear marginal basin in Southern South America. In Sedimentation in submarine canyons, fans, and trenches (eds Stanley, D. J. & Kelling, G.), pp. 362–73. Stroudsberg: Dowden, Hutchinson and Ross.Google Scholar
Winn, R. D. & Dott, R. H. 1979. Deep-water fan-channel conglomerates of Late Cretaceous age, southern Chile. Sedimentology 26, 203–28.CrossRefGoogle Scholar
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