Emplacement and temporal constraints of the Gondwanan intrusive complexes of northern Patagonia: La Esperanza plutono-volcanic case

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Two main lines of evidence disagree whether or not the Patagonian blocks collided with Gondwana. All models invoke the voluminous magmatism of the La Esperanza Complex as evidence for active subduction magmatic arc or to a postcollisional setting. The evolution of this bimodal igneous suite is reass...

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Autor principal: Martínez Dopico, C.I
Otros Autores: López de Luchi, M.G, Rapalini, A.E, Wemmer, K., Fanning, C.M, Basei, M.A.S
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: Elsevier B.V. 2017
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100 1 |a Martínez Dopico, C.I. 
245 1 0 |a Emplacement and temporal constraints of the Gondwanan intrusive complexes of northern Patagonia: La Esperanza plutono-volcanic case 
260 |b Elsevier B.V.  |c 2017 
270 1 0 |m Martínez Dopico, C.I.; Instituto de Geocronología y Geología Isotópica (INGEIS), Pabellón INGEIS, Ciudad Universitaria, C1428EHA, Argentina; email: carmenmd@ingeis.uba.ar 
506 |2 openaire  |e Política editorial 
504 |a Annen, C., Implications of incremental emplacement of magma bodies for magma differentiation thermal aureole dimensions and plutonism-volcanism relationships (2011) Tectonophysics, 500, pp. 3-10 
504 |a Archanjo, C., Launeau, P., Bouchez, J., Magnetic fabric vs magnetite and biotite shape fabrics of magnetite bearing granite pluton of Gameleiras (northeast Brazil) (1995) Phys. Earth Planet. Inter., 89, pp. 63-75 
504 |a Archanjo, C.J., Hollanda, M.H.B.M., Rodrigues, S.W.O., Neves, B.B.N., Amstrong, R., Fabrics of pre- and syn granite plutons and chronology of shear zones in the Eastern Borborema Province, NE Brazil (2008) J. Struct. Geol., 30, pp. 310-326 
504 |a Biedermann, A.R., Bender Koch, C., Pettke, T., Hirt, A.M., Magnetic anisotropy in natural amphibole crystals (2015) Am. Mineral. 
504 |a Biedermann, A.R., Pettke, T., Angel, R.J., Hirt, A.M., Anisotropy of magnetic susceptibility in alkali feldspar and plagioclase (2016) Geophys. J. Int., 205 (1), pp. 479-489 
504 |a Bolle, O., Besse, M., Diot, H., Magma flow and feeder chamber location inferred from magnetic fabrics in jotunitic dykes (Rogaland anorthosite province, SW Norway) (2010) Tectonophysics, 493, pp. 42-57 
504 |a Borradaile, G.J., Henry, B., Tectonic applications of magnetic susceptibility and its anisotropy (1997) Earth Sci. Rev., 42, pp. 49-93 
504 |a Borradaile, G.J., Jackson, M., Anisotropy of magnetic susceptibility (AMS): Magnetic petrofabrics of deformed rocks. (2004) Geol. Soc. Spec. Pub., 238 (2004), pp. 299-360 
504 |a Borradaile, G.J., Jackson, M., Structural geology, petrofabrics and magnetic fabrics (AMS, AARM, AIRM) (2010) J. Struct. Geol., 31, pp. 1519-1551 
504 |a Bouchez, J.-L., Granite is never isotropic: an introduction to AMS studies of Granitic Rocks (1997) Granite: From Segregation of Melt to Emplacement Fabrics, pp. 95-112. , J.-L. Bouchez D.H.W. Hutton W.W. Stephens 
504 |a Bouchez, J.L., Gleizes, G., Tjouadi, T., Rochette, P., Microstructure and magnect susceptibility applied to emplacement kinematics of granites: the example of the Foix pluton (French Pyrenees) (1990) Tectonophysics, 184, pp. 157-171 
504 |a Brown, M., Solar, G.S., Granite ascent and emplacement during contractional deformation in convergent orogens (1998) J. Struct. Geol., 20, pp. 1365-1393 
504 |a Cañón-Tapia, E., Single-grain versus distribution anisotropy: a simple three simensional model (1996) Phys. Earth Planet. Inter., 94, pp. 149-158 
504 |a Cañón-Tapia, E., Factors affecting the relative importance of shape and distribution anisotropy in rocks: theory and experiments (2001) Tectonophysics, 340, pp. 117-131 
504 |a Cañón-Tapia, E., Mendoza-Borunda, R., Magnetic petrofabric of igneous rocks: lessons from pyroclastic density current deposits and obsidians (2014) J. Volcanol. Geotherm. Res., 289, pp. 151-169 
504 |a Cawood, P., Terra Australis Orogen: Rodinia breakup and development of the Pacific and Iapetus margins of Gondwana during the Neoproterozoic and Paleozoic (2005) Earth Sci. Rev., 69, pp. 249-279 
504 |a Chadima, M., Jelinek, V., Cureval 8, thermomagnetic curves browser and analyzer for Windows (2008), www.agico.com; Chadima, M., Jelinek, V., Anisoft 4.2, anisotropy data browser for Windows (2009), www.agico.com; Chernicoff, C.J., Zapettini, E., Geophysical evidence for terrane boundaries in South-Central Argentina (2004) Gondwana Res., 7, pp. 1105-1116 
504 |a Chernicoff, C.J., Zappettini, E.O., Santos, J.O.S., McNaughton, N.J., Belousova, E., Combined U-Pb SHRIMP and Hf isotope study of the Late Paleozoic Yaminué Complex, Río Negro Province, Argentina: implications for the origin and evolution of the Patagonia composite terrane (2013) Geosci. Front., 4, pp. 37-56 
504 |a Dunlop, D.J., Özdemir, Ö., Rock Magnetism: Fundamentals and Frontiers (1997), Cambridge University Press New York, London and Cambridge (573 pp.); Fanning, C.M., Hervé, F., Pankhurst, R.J., Rapela, C.W., Kleiman, L.E., Yaxley, G.M., Castillo, P., Lu-Hf isotope evidence for the provenance of Permian detritus in accretionary complexes of western Patagonia and the northern Antartic Peninsula region (2011) J. S. Am. Earth Sci., 32 (4), pp. 485-496 
504 |a Ferré, E.C., Theoretical models of intermediate and inverse AMS fabrics (2002) Geophys. Res. Lett., 29 
504 |a Ferré, E.C., Wilson, J., Gleizes, G., Magnetic susceptibility and AMS of the Bushveld alkaline granites, South Africa (1999) Tectonophysics, 307, pp. 113-133 
504 |a Gaillot, P., de Saint Blanquat, M., Bouchez, J.L., Effects of magnetic interactions in anisotropy of magnetic susceptibility: models, experiments and implications for igneous rock fabrics quantification (2006) Tectonophysics, 418, pp. 3-19 
504 |a Giacosa, R., Lema, H., Busteros, A., Zubía, M., Cucchi, R., Di Tommaso, I., Estructura del Triásico de la región norte del Macizo Nordpatagónico (40°–41°S, 67°30′–69°45′O, Río Negro) (2007) Rev. Asoc. Geol. Argent., 62, pp. 355-365 
504 |a Gleizes, G., Nédélec, A., Bouchez, J.-L., Autran, A., Rochette, P., Magnetic susceptibility of the Mont Louis Andorra ilmenite-type granite (Pyrenees): a new tool for the petrographic characterization and regional mapping of zoned granite plutons (1993) J. Geophys. Res., 98, pp. 4317-4331 
504 |a González, P.D., Sato, A.M., Naipauer, M., Varela, R., Llambías, E., Greco, G., González, S.N., García, V., Conexión Macizo Norpatagónico- Antártida oriental: fósiles arqueociátidos, comparación geológica y circones detríticos (2011) XVIII Congreso Geológico Argentino, Neuquén, , (2 pp) 
504 |a González, P.D., Tortello, M.F., Damborenea, S.E., Naipauer, M., Sato, A.M., Varela, R., Archaecyaths from South America: review and new record (2012) Geol. J. 
504 |a Grégoire, V., Darrozes, P., Gaillot, P., Nédélec, A., Launeau, P., Magnetite grain shape fabric and distribution anisotropy vs. rock magnetic fabric: a three-dimensional case study (1998) J. Struct. Geol., 20, pp. 937-944 
504 |a Gregori, D.A., Kostadinoff, J., Strazzere, L., Raniolo, A., Tectonic significance and consequences of the Gondwanide orogeny in northern Patagonia, Argentina (2008) Gondwana Res., 14, pp. 429-450 
504 |a Gregori, D.A., Kostadinoff, J., Álvarez, G., Raniolo, A., Strazzere, L., Martinez, J.C., Barros, M., Preandean geological configuration of the eastern North Patagonian Massif, Argentina (2013) Geosci. Front., 4, pp. 693-708 
504 |a Gregori, D.A., Saini-Eidukat, B., Benedini, L., Strazzere, L., Barros, M., Kostadinoff, J., The Gondwana Orogeny in northern North Patagonian Massif: evidences from the Caita Có granite, La Seña and Pangaré mylonites, Argentina (2016) Geosci. Front., 7, pp. 621-638 
504 |a Guerrero-Suárez, S., Martín-Hernández, F., Haematite natural crystals: non-linear initial susceptibility at low temperature (2016) Geophys. J. Int. 
504 |a Hargraves, R.B., Johnson, D., Chan, C.Y., Distribution anisotropy: the cause of AMS in igneous rocks (1991) Geophys. Res. Lett., 18, pp. 2193-2196 
504 |a Higgins, M.D., Quantitative Textural Measurements in Igneous and Metamorphic Petrology (2006), Cambridge University Press Cambridge (265 pp); Hrouda, F., The effect of quartz on the magnetic anisotropy of quartzite (1986) Stud. Geophys. Geod., 30, pp. 39-45 
504 |a Hrouda, F., Modelling relationship between bulk susceptibility and AMS in rocks consisting of two magnetic fractions represented by ferromagnetic and paramagnetic minerals - implications for understanding magnetic fabrics in deformed rocks (2010) J. Geol. Soc. India, 75, pp. 254-266 
504 |a Jelinek, V., Statistical processing of anisotropy of magnetic susceptibility measured on groups of specimens (1978) Stud. Geophys. Geod., 22, pp. 50-62 
504 |a Jelinek, V., Characterization of the magnetic fabrics of rocks (1981) Tectonophysics, 79, pp. T63-T67 
504 |a Kleiman, L.E., Japas, M.S., The Choiyoi volcanic province at 34°S–36°S (San Rafael, Mendoza, Argentina): implications for the Late Paleozoic evolution of the southwestern margin of Gondwana (2009) Tectonophysics, 473 (3/4), pp. 283-299 
504 |a Kostadinoff, J., Gregori, D.A., Raniolo, A., Configuración geofísica- gológica del sector norte de la provincia de Río Negro (2005) Rev. Asoc. Geol. Argent., 60 (2), pp. 368-376 
504 |a Kretz, R., Symbols of rock-forming minerals (1983) Am. Mineral., 68, pp. 277-279 
504 |a Kruckenberg, S.C., Ferré, E.C., Teyssier, C., Vanderhaeghe, O., Whitney, D.L., Skord, J.A., Seaton, N., Viscoplastic flow in migmatites deduced from fabric anisotropy: an example from the Naxos dome, Greece (2010) J. Geophys. Res. Solid Earth, 115, p. B09401 
504 |a Labudia, C.H., Bjerg, E.A., Geología del Sector Oriental de la Hoja Bajo Hondo (39e), Provincia de Río Negro (1994) Rev. Asoc. Geol. Argent., 49, pp. 284-296 
504 |a Launeau, P., Cruden, A.R., Magmatic fabric acquisition mechanisms in a syenite: Results of a combined anisotropy of magnetic susceptibility and image analysis study. (1998) J. Geophys Res. Solid Earth 
504 |a Lince Klinger, F., León, M., Martínez, P., Weidmann, C., Anci, S., Álvarez, O., Modelo geofísico con datos gravimétricos y aeromagnéticos en el borde noreste del Macizo Norpatagónico, Río Negro, Argentina (2014) Geoacta, 39, pp. 51-61 
504 |a Llambías, E.J., Rapela, C.W., Geología de los complejos eruptivos del Paleozoico superior de La Esperanza, provincia de Río Negro (1984) Rev. Asoc. Geol. Argent., 40, pp. 4-25 
504 |a Llambías, E.J., Quenardelle, S., Montenegro, T., The Choiyoi Group from central Argentina: a subalkaline transitional to alkaline association in the craton adjacent to the active margin of the Gondwana continent (2003) J. S. Am. Earth Sci., 16, pp. 243-257 
504 |a López de Luchi, M.G., Cerredo, M.E., Geochemistry of the Mamil Choique granitoids at Rio Chico, Río Negro, Argentina: Late Paleozoic crustal melting in the North Patagonian Massif (2008) J. S. Am. Earth Sci., 25, pp. 526-546 
504 |a López de Luchi, M., Rapalini, A.E., Siegesmund, S., Steenken, A., Application of magnetic fabrics to the emplacement and tectonic history of Devonian granitoids in central Argentina (2004) Geol. Soc. Lond. Spec. Publ., 238, pp. 447-474 
504 |a López de Luchi, M.G., Rapalini, A.E., Tomezzoli, R.N., Magnetic fabric and microstructures of Late Paleozoic granitoids from the North Patagonian Massif: evidence of a collision between Patagonia and Gondwana? (2010) Tectonophysics, 494, pp. 118-137 
504 |a Ludwig, K.R., User's manual for ISOPLOT 3.6. A geochronological toolkit for Microsoft Excel (2008) Berkeley Geochronology Center Special Publication N°4. Berkeley 
504 |a Luppo, T., Martínez Dopico, C., Rapalini, A.E., López de Luchi, M.G., Miguez, M., Fanning, M., Permo-Triassic paleomagnetic poles from volcanic units in northern Patagonia: are we tracking the final stages of collision of Patagonia? (2017) Tectonophysics, , (submitted) 
504 |a Martínez Dopico, C.I., Geología, petrogénesis y condiciones de emplazamiento de los granitoides permo-triásicos del área de La Esperanza, Macizo Norpatagónico: Inferencias sobre la construcción del borde SO del Gondwana (2013), University of Buenos Aires (520 pp, unpublished, PhD Thesis); Martínez Dopico, C.I., López de Luchi, M.G., Rapalini, A.E., Kleinhanns, I., Distinguishing crustal segments in the North Patagonian Massif: insights from Sm-Nd systematics (2011) J. S. Am. Earth Sci., 31, pp. 324-341 
504 |a Martínez Dopico, C.I., López de Luchi, M.G., Wemmer, K., Rapalini, A.E., Composición química de biotita y hornblenda y edades de enfriamiento como indicadores de las condiciones de emplazamiento del Complejo Plutónico La Esperanza (Pérmico Superior), Macizo Norpatagónico (2013) Rev. Asoc. Geol. Argent., 70, pp. 3-15 
504 |a Martínez Dopico, C.I., Rapalini, A.E., López de Luchi, M.G., Wemmer, K., Assembly of shallow intrusions from multiple magma pulses in La Esperanza Plutonic Complex, North Patagonian Massif, Argentina (2013) Latinmag Letter, 3 (OB06), pp. 1-5 
504 |a Martínez Dopico, C.I., Tohver, E., López de Luchi, M.G., Wemmer, K., Rapalini, A.E., Cawood, P., Jurassic cooling ages in paleozoic to early mesozoic granitoids of northeastern Patagonia: 40Ar/39Ar, 40K-40Ar mica and U-Pb zircon evidence (2016) Int. J. Earth Sci. 
504 |a Martín-Hernández, F.C., Luneburg, C., Aubourg, M., Jackson, M., Magnetic fabric: methods and applications (2004) Geological Society of London, Special Publication 238, London, , (551 pp) 
504 |a Pángaro, F., Ramos, V.A., Paleozoic crustal blocks of onshore and offshore central Argentina: new pieces of the southwestern Gondwana collage and their role in the accretion of Patagonia and the evolution of Mesozoic south Atlantic sedimentary basins (2012) Mar. Pet. Geol. 
504 |a Pankhurst, R.J., Rapela, C.W., Caminos, R., Llambías, E., Parica, C., A revised age for the granites of the central Somuncura Batholith, North Patagonian Massif (1992) J. S. Am. Earth Sci., 5, pp. 321-325 
504 |a Pankhurst, R.J., Rapela, C.W., Fanning, C.M., Márquez, M., Gondwanide continental collision and the origin of Patagonia (2006) Earth Sci. Rev., 76, pp. 235-257 
504 |a Pankhurst, R.J., Rapela, C.W., López De Luchi, M.G., Rapalini, A.E., Fanning, C.M., Galindo, C., The Gondwana connections of northern Patagonia (2014) J. Geol. Soc., 171, pp. 313-328 
504 |a Paterson, S.R., Fowler, T.K., Schmidt, K.L., Yoshinobu, A.S., Yuan, E.S., Miller, R.B., Interpreting magmatic fabric patterns in pluton (1998) Lithos, 44, pp. 53-82 
504 |a Potter, D.K., Stephenson, A., Single-domain particles in rocks and magnetic fabric analysis (1988) Geophys. Res. Lett., 15, pp. 1097-1100 
504 |a Ramos, V.A., Patagonia: ¿Un continente paleozoico a la deriva? (1984) 9° Congreso Geológico Argentino, Actas 2, pp. 311-325. , (San Carlos de Bariloche) 
504 |a Ramos, V.A., Patagonia: a Paleozoic continent adrift? (2008) J. S. Am. Earth Sci., 26, pp. 235-251 
504 |a Ramos, V.A., Naipauer, M., Patagonia: where does it come from? (2014) J. Iber. Geol., 40, pp. 367-380 
504 |a Rapalini, A.E., Syntectonic magnetization of the Mid-Paleozoic Sierra Grande Formation. Further constraints for the tectonic evolution of Patagonia (1998) J. Geol. Soc. Lond., 155, pp. 105-114 
504 |a Rapalini, A.E., López de Luchi, M., Martínez Dopico, C., Lince Klinger, F., Giménez, M., Martínez, P., Did Patagonia collide against Gondwana in the Late Paleozoic? Some insights from a multidisciplinary study of magmatic units of the North Patagonian Massif (2010) Geol. Acta, 8, pp. 349-371 
504 |a Rapalini, A.E., López de Luchi, M., Tovher, E., Cawood, P.A., The South American ancestry of the North Patagonian Massif: geochronological evidence for an autochthonous origin? (2013) Terra Nova, 25, pp. 337-342 
504 |a Rapela, C.W., Caminos, R., Geochemical characteristics of the Upper Paleozoic magmatism in the eastern sector of Northpatagonian Massif (1987) Rev. Bras. Geosci., 17, pp. 535-543 
504 |a Rapela, C.W., Kay, S., The Late Paleozoic to recent magmatic evolution of northern Patagonia (1988) Episodes, 11, pp. 175-182 
504 |a Rapela, C.W., Llambías, E.J., Evolución magmática y relaciones regionales de los Complejos Eruptivos de La Esperanza, provincia de Río Negro (1985) Rev. Asoc. Geol. Argent., 40, pp. 4-25 
504 |a Rochette, P., Magnetics susceptibility of the rock matrix related to magnetic fabric studies (1987) J. Struct. Geol., 9, pp. 1015-1020 
504 |a Rochette, P., Jackson, M., Aubourg, C., Rock magnetism and the interpretation of anisotropy of magnetic susceptibility (1992) Rev. Geophys., 30, pp. 209-226 
504 |a Sato, A.M., Llambías, E.J., Basei, M.A.S., Castro, C.E., Three stages in the Late Paleozoic magmatism to Triassic magmatism of southwestern Gondwana, and the relationships with the volcanogenic events in coeval basins (2015) J. S. Am. Earth Sci., 63, pp. 48-69 
504 |a Schiuma, M., Llambías, E.J., New ages on Lower Jurassic volcanism in the dorsal de Huincul, Neuquén (2008) Rev. Asoc. Geol. Argent., 63 (4), pp. 644-652 
504 |a Schöpa, A., Floess, D., de Saint Blanquat, M., Annen, C., Launeau, P., The relation between magnetite and silicate fabric in granitoids of the Adamello Batholith (2015) Tectonophysics, 642, pp. 1-15 
504 |a Sen, K., Mamtani, M.A., Magnetic fabric, shape preferred orientation and regional strain in granitic rocks (2006) J. Struct. Geol., 28, pp. 1870-1882 
504 |a St. Blanquat, M.D., Law, R., Bouchez, J.-L., Morgan, S., Internal structure and emplacement of the Papoose Flat pluton: an integrated structural, petrographic and magnetic susceptibility study (2001) Geol. Soc. Am. Bull., 113, pp. 976-996 
504 |a Stephenson, A., Distribution anisotropy: two simple models for magnetic lineation and foliation (1994) Phys. Earth Planet. Inter., 82, pp. 49-53 
504 |a Tarling, D.H., Hrouda, F., The Magnetic Anisotropy of Rocks (1993), Chapman & Hall London (217 p); Tomezzoli, R.N., Rapalini, A.E., López de Luchi, M.G., Martínez Dopico, C., Further evidence of widespread Permian remagnetization in the North Patagonian Massif, Argentina (2013) Gondwana Res. 
504 |a Varela, R., Basei, M.A.S., Cingolani, C.A., Siga, O., Jr., Passarelli, C., El basamento cristalino de los Andes norptagónicos en Argentina: Geocronología e interpretación tectónica (2005) Rev. Geol. Chile, 32, pp. 167-187 
504 |a Vernon, R.H., A Practical Guide to Rock Microstructure (2004), Cambridge University Press Cambridge (594 pp); Verwey, E.J.W., Electronic conduction of magnetite (Fe3O4) and its transition point at low temperatures (1939) Nature, 144, pp. 327-328 
504 |a Von Gosen, W., Polyphase structural evolution in the northeastern segment of the North Patagonian Massif (southern Argentina) (2002) J. S. Am. Earth Sci., 15, pp. 591-623 
504 |a Von Gosen, W., Thrust tectonics in the North Patagonian Massif (Argentina): implications for a Patagonian plate (2003) Tectonics, 22 (1), p. 1005 
504 |a Von Gosen, W., Stages of Late Paleozoic deformation and intrusive activity in the western part of the North Patagonian Massif (southern Argentina) and their geotectonic implications (2009) Geol. Mag., 146, pp. 48-71 
504 |a Wemmer, K., K/Ar-Altersdatierungsmöglichkeiten für retrograde Deformationsprozesse im spröden und duktilen Bereich-Beispiele aus der KTB-Vorbohrung (Oberpfalz) und dem Bereich der Insubrischen Linie (N-Italien) (1991) Göttinger Arbeiten zur Geologie und Paläontologie 51, pp. 1-61 
504 |a Williams, I.S., U–Th–Pb geochronology by ion microprobe (1998) Applications of Microanalytical Techniques to Understanding Mineralizing Processes, Reviews of Economic Geology 7, pp. 1-35. , M.A. McKibben W.C. Shanks III W.I. Ridley 
504 |a Wilson, J., Ferré, E.C., Lespinasse, P., Repeated tabular injection of high-level alkaline granites in the eastern Bushveld, South Africa (2000) J. Geol. Soc. Lond., 17, pp. 1077-1088 
520 3 |a Two main lines of evidence disagree whether or not the Patagonian blocks collided with Gondwana. All models invoke the voluminous magmatism of the La Esperanza Complex as evidence for active subduction magmatic arc or to a postcollisional setting. The evolution of this bimodal igneous suite is reassessed with field, geochronological (SHRIMP U-Pb zircon and K-Ar mica) and petrophysical data. Emplacement of high-K calk-alkaline granitic magmas occurred at shallow crustal levels (2–8 ± 2 km depth) related to the development and collapse of a caldera associated with a regional NW-SE structural trend. Magmatism involved intermediate hybrid pulses at 273 ± 2 Ma and 255 ± 2 Ma (Prieto Granodiorite) that shifted like a yo-yo to acidic magmas at 260 ± 2 Ma and 250 ± 2 Ma (Donosa and Calvo granites). Absence of solid-state deformation features and the low anisotropy degrees in the granites indicate that its fabric is magmatic in origin. Magnetic fabric in granodiorites displays a concentrical pattern with subhorizontal foliations and lineations. Parallel to the volcanic axis, magnetic foliations and moderately plunging lineations indicate a common feeder system for plutonics and volcanics. Donosa Granite shows a discordant pattern with WNW-ESE ENE-WSW trending low plunging lineations and foliations. The plutono-volcanic system construction (273–255 Ma) followed NW-SE and NE-SW diamond shape faults trends and supracrustal discontinuities. Magmatic Climax is bracketed at 260 Ma. The collapse of the edifice is evidenced by the intrusion of acid magma plugs and dike swarms between 250 and 246 Ma. A similar age range was identified in other areas of Patagonia related to syn and postcollisional tectonic events. No evidence of tectonic activity such as major uplift, metamorphism or thrusting was found excepting regional strike-slip faulting and extension. Therefore, La Esperanza Complex is a high crustal level episode, and as such may not have structurally recorded an active collision during its crystallization and cooling. © 2017 Elsevier B.V.  |l eng 
593 |a Instituto de Geocronología y Geología Isotópica (INGEIS), Pabellón INGEIS, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina 
593 |a Instituto de Ciencias Básicas, Aplicadas y Ambientales de Buenos Aires (IGEBA), Department of Geological Sciences, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina 
593 |a Geoscience Centre of the University of Göttingen (GZG), Göttingen, Germany 
593 |a Research School of Earth Sciences, The Australian National University, Mills Road, Canberra, ACT 2600, Australia 
593 |a Instituto de Geociências, Universidade de São Paulo (USP), Rua do Lago 562, São Paulo, CEP-05508-900, Brazil 
690 1 0 |a ANISOTROPY OF MAGNETIC SUSCEPTIBILITY 
690 1 0 |a GONDWANA 
690 1 0 |a PATAGONIA 
690 1 0 |a PERMIAN 
690 1 0 |a SHRIMP U-PB DATING 
690 1 0 |a SUBVOLCANIC MAGMATIC COMPLEXES 
690 1 0 |a GEOCHRONOLOGY 
690 1 0 |a GRANITE 
690 1 0 |a HYDRAULIC STRUCTURES 
690 1 0 |a MAGNETIC ANISOTROPY 
690 1 0 |a MAGNETIC SUSCEPTIBILITY 
690 1 0 |a MAGNETISM 
690 1 0 |a MATERIALS HANDLING EQUIPMENT 
690 1 0 |a SHELLFISH 
690 1 0 |a SILICATE MINERALS 
690 1 0 |a STRIKE-SLIP FAULTS 
690 1 0 |a VOLCANOES 
690 1 0 |a ZIRCON 
690 1 0 |a ANISOTROPY OF MAGNETIC SUSCEPTIBILITY 
690 1 0 |a GONDWANA 
690 1 0 |a MAGMATIC COMPLEXES 
690 1 0 |a PATAGONIA 
690 1 0 |a PERMIAN 
690 1 0 |a SHRIMP U-PB DATING 
690 1 0 |a LANTHANUM COMPOUNDS 
690 1 0 |a EMPLACEMENT 
690 1 0 |a GONDWANA 
690 1 0 |a MAGMATISM 
690 1 0 |a MAGNETIC ANISOTROPY 
690 1 0 |a MAGNETIC FABRIC 
690 1 0 |a MAGNETIC SUSCEPTIBILITY 
690 1 0 |a PERMIAN 
690 1 0 |a SHRIMP DATING 
690 1 0 |a URANIUM-LEAD DATING 
690 1 0 |a PATAGONIA 
690 1 0 |a DECAPODA (CRUSTACEA) 
690 1 0 |a ESPERANZA 
650 1 7 |2 spines  |a MICA 
700 1 |a López de Luchi, M.G. 
700 1 |a Rapalini, A.E. 
700 1 |a Wemmer, K. 
700 1 |a Fanning, C.M. 
700 1 |a Basei, M.A.S. 
773 0 |d Elsevier B.V., 2017  |g v. 712-713  |h pp. 249-269  |p Tectonophysics  |x 00401951  |w (AR-BaUEN)CENRE-81  |t Tectonophysics 
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856 4 0 |u https://doi.org/10.1016/j.tecto.2017.05.015  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_00401951_v712-713_n_p249_MartinezDopico  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00401951_v712-713_n_p249_MartinezDopico  |y Registro en la Biblioteca Digital 
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