Geophysical evidence for an extensive Pie de Palo Complex mafic-ultramafic belt, San Juan, Argentina
The recent completion of a high-resolution aeromagnetic survey over the Pie de Palo uplift of the western Sierras Pampeanas has revealed an area of large magnetic anomalies associated with the Pie de Palo Complex. The Las Pirquitas thrust, which has transported and uplifted the Pie de Palo Complex,...
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2009
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| LEADER | 13681caa a22009617a 4500 | ||
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| 001 | PAPER-8282 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518203805.0 | ||
| 008 | 190411s2009 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-70450222328 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Chernicoff, C.J. | |
| 245 | 1 | 0 | |a Geophysical evidence for an extensive Pie de Palo Complex mafic-ultramafic belt, San Juan, Argentina |
| 260 | |c 2009 | ||
| 270 | 1 | 0 | |m Chernicoff, C.J.; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)Argentina; email: jchern@secind.mecon.gov.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 504 | |a Kay, S.M., Orrel, S., Abbruzzi, J.M., Zircon and whole rock Nd-Pb isotopic evidence for a Greenville age and Laurentian origin for the basement of the Precordillera terrane in Argentina (1996) Journal of Geology, 104, pp. 637-648 | ||
| 504 | |a Leveratto, M.A., Geología de la zona al oeste de Ullún-Zonda, borde oriental de la Precordillera de San Juan, eruptividad subvolcánica y estructura (1968) Asociación Geológica Argentina, Revista, 23, pp. 129-157 | ||
| 504 | |a Mulcahy, S.R., Roeske, S.M., McClelland, W.C., Ellis, J.R., Normade, S., Vujovich, G.I., Timing and nature of forearc deformation and trenchward migration of the Famatina arc during accretion of the Precordillera terrane (2005) Gondwana 12: Geological and Biological Heritage of Gondwana, Abstracts, p. 262. , Pankhurst, R.J, Beiga, J.D, Eds, Academia Nacional de Ciencias, Córdoba, Argentina, p | ||
| 504 | |a Naipauer, M., Cingolani, C.A., Valencio, S., Chemale Jr., F., Vujovich, G.I., Estudios isotópicos en carbonatos marinos del terreno Precordillera-Cuyania: ¿Plataforma común en el Neoproterozoico-Paleozoico inferior? (2005) Latin American Journal of Sedimentology and Basin Analysis, 12 (2), pp. 93-113 | ||
| 504 | |a Naipauer, M., Cingolani, C.A., McClelland, W.C., Vujovich, G.I., Ellis, J.R., U/Pb (LA-ICP-MS) ages on detrital zircons from Angacos Limestone siliciclastic levels (Caucete Group) San Juan province, Argentina: provenance implications in Cuyania terrane (2005) V South American Symposium on Isotopic Geology, Actas, pp. 127-130 | ||
| 504 | |a Pankhurst, R.J., Rapela, C.W., Saavedra, J., Baldo, E., Dahlquist, J., Pascua, I., Fanning, C.M., The Famatian magmatic arc in the central Sierras Pampeanas: an Early to Mid-Ordovician continental arc on the Gondwana margin (1998) The Proto-Andean Margin of Gondwana, 142, pp. 343-367. , Pankhurst R.J., and Rapela C.W. (Eds), Geological Society Special Publication, London | ||
| 504 | |a Quenardelle, S., Ramos, V.A., Ordovician western Sierras Pampeanas magmatic belt: Record of Precordillera accretion in Argentina (1999) Laurentia-Gondwana connections before Pangea, 336, pp. 63-86. , Ramos, V.A, Keppie, J.D, Eds, Geological Society of America Special Paper | ||
| 504 | |a Ramos, V.A., Cuyania, an exotic block to Gondwana: review of a historical success and the present problems (2004) Gondwana Research, 7 (4), pp. 1009-1026 | ||
| 504 | |a Ramos, V.A., Vujovich, G.I., Hoja Geológica 3169-IV, San Juan, Provincia de San Juan. Subsec. Minería Nación, Servicio Geológico Minero Argentino, Buenos Aires (2000) Boletín, 243, p. 82 | ||
| 504 | |a Ramos, V.A., Dallmeyer, D., Vujovich, G.I., Ar/Ar constraints in the age of deformation of the Pie de Palo basement: implications for the docking of Precordillera and Chilenia (1998) The Proto-Andean Margin of Gondwana, 142, pp. 143-158. , Pankhrust R.J., and Rapela C.W. (Eds), Geological Society Special Publication, London | ||
| 504 | |a Ramos, V.A., Cristallini, E.O., Pérez, D.J., The Pampean flat-slab of the Central Andes (2002) Journal of South American Earth Sciences, 15, pp. 59-78 | ||
| 504 | |a Rapela, C., Pankhurst, R.J., Fanning, C.M., Galindo, C., Baldo, E., Datación U-Pb SHRIMP de circones detríticos en paranfibolitas neoproterozoicas de la secuencia Difunta Correa (Sierras Pampeanas Occidentales, Argentina) (2005) Geogaceta, 38, pp. 227-230 | ||
| 504 | |a Roeske, S.M., McClelland, W.C., Cain, IV, J.C., Mulcahy, S.R., Vujovich, G.I., Iriondo, A., Paleozoic record of convergence and extension within the arc-forearc transition of the Famatina arc, as recorded in western Sierra de La Huerta, Argentina (2005) Gondwana 12: Geological and Biological Heritage of Gondwana, Abstracts, p. 315. , Pankhurst, R.J, Beiga, J.D, Eds, Academia Nacional de Ciencias, Córdoba, Argentina, p | ||
| 504 | |a (2005) Aeromagnetic survey of the Pie de Palo block: Digital data, , SEGEMAR, Servicio Geológico-Minero Argentino | ||
| 504 | |a van Staal, C.R., Vujovich, G.I., Davis, W., 2002. Tectonostratigraphic relationships and structural evolution of the western margin of the Sierra de Pie de Palo, Cuyania (Precordillera) terrane, Argentina. In: GSA, Annual Meeting, Denver, Abstracts, Paper No. 223-7; van Staal, C.R., Vujovich, G.I., Davis, W., Evolution of structures in a continental subduction channel: An example from the Sierra de Pie de Palo, Cuyania terrane, Argentina (2005) Gondwana 12: Geological and Biological Heritage of Gondwana, Abstracts, p. 362. , Pankhurst, R.J, Veiga, G.D, Eds, Academia Nacional de Ciencias, Córdoba, Argentina, p | ||
| 504 | |a Varela, R., Dalla Salda, L., Geocronología Rb-Sr de metamorfitas y granitoides del extremo sur de la Sierra de Pie de Palo, San Juan (1993) Asociación Geológica Argentina, Revista, 47, pp. 271-276 | ||
| 504 | |a Vujovich, G.I., Metasedimentos siliciclásticos proterozoicos en la sierra de Pie de Palo, San Juan: procedencia y ambiente tectónico (2003) Asociación Geológica Argentina, Revista, 58, pp. 608-622 | ||
| 504 | |a Vujovich, G.I., Kay, S.M., Evidencias geoquímicas del origen y ambiente geológico de las rocas metamórficas de composición máfica a intermedia de las Sierras Pampeanas Occidentales (1996) 13° Congreso Geológico Argentino and 3° Congreso Exploración Hidrocarburos, 5, pp. 273-291. , Actas | ||
| 504 | |a Vujovich, G.I., Kay, S.M., A Laurentian? Grenville-age oceanic arc/back-arc terrane in the Sierra de Pie de Palo, Western Sierras Pampeanas, Argentina (1998) The Proto-Andean Margin of Gondwana, 142, pp. 159-180. , Pankhrust R.J., and Rapela C.W. (Eds), Geological Society Special Publication, London | ||
| 504 | |a Vujovich, G.I., Ramos, V.A., La faja de Angaco y su relación con las Sierras Pampeanas Occidentales (1994) 7° Congreso Geológico Chileno, 1, pp. 215-219. , Actas | ||
| 504 | |a Vujovich, G.I., Ramos, V.A., 1999. Geotectonic map of the Argentine Republic - Mapa geotectónico de la República Argentina (1:2.500.000), Subsecretaría de Minería de la Nación, Buenos Aires, Servicio Geológico Minero Argentino; Vujovich, G.I., van Staal, C.R., Davis, W., Age constraints on the tectonic evolution and provenance of the Pie de Palo Complex, Cuyania composite terrane, and the Famatinian Orogeny in the Sierra de Pie de Palo, San Juan, Argentina (2004) Gondwana Research, 7 (4), pp. 1041-1056 | ||
| 520 | 3 | |a The recent completion of a high-resolution aeromagnetic survey over the Pie de Palo uplift of the western Sierras Pampeanas has revealed an area of large magnetic anomalies associated with the Pie de Palo Complex. The Las Pirquitas thrust, which has transported and uplifted the Pie de Palo Complex, is recognized for at least 30 km in a roughly NE direction along the western boundary of the Pie de Palo Complex, beyond its limited outcrop. The type of sediments of the Caucete Group in the footwall of the Las Pirquitas thrust, which are regarded as the leading edge of the Precordillera terrane, are associated with much less pronounced magnetic anomalies. In addition, a conspicuous, NNE trending, broad magnetic high stands out in the survey, several kilometers to the east of the main outcrops of the Pie de Palo Complex; this broad magnetic anomaly bisects the Pie de Palo basement block, and continues further south at least as far as 32°S, the southern boundary of the latest aeromagnetic survey. This magnetic anomaly is interpreted to represent a structure corresponding to the Grenvillian Precordillera-Pie de Palo tectonic boundary zone, and would comprise the buried largest part of the mafic-ultramafic belt. The geophysical model of the magnetic data indicates that the boundary zone dips to the east, possibly suggesting the existence of a set of synthetic east dipping, west-verging thrusts, of which only one major structure (Las Pirquitas thrust) is exposed; the possibility of other slivers of upthrust boundary zone material cannot be excluded. It is considered that the Pie de Palo Complex represents a small sliver upthrust from the unexposed boundary zone material (containing highly magnetic mafic-ultramafic rocks). The east-dipping, west verging structures associated with the Pie de Palo Complex are suggested to represent an Ordovician reactivation of a Grenvillian suture zone developed when the Precordillera basement and Pie de Palo terrane docked; this reactivation probably resulted from the collision of the Cuyania terrane onto the western margin of Gondwana. © 2009 Elsevier Ltd. All rights reserved. |l eng | |
| 593 | |a Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina | ||
| 593 | |a Servicio Geológico-Minero Argentino (SEGEMAR), Julio A. Roca 651, 1067 Buenos Aires, Argentina | ||
| 593 | |a Dpto. Ciencias Geológicas, FCEyN, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina | ||
| 593 | |a Geological Survey of Canada, 601 Both St, Ottawa, Canada | ||
| 690 | 1 | 0 | |a AEROMAGNETICS |
| 690 | 1 | 0 | |a GRENVILLIAN MAFIC-ULTRAMAFIC BELT |
| 690 | 1 | 0 | |a SIERRA DE PIE DE PALO |
| 690 | 1 | 0 | |a AEROMAGNETIC SURVEY |
| 690 | 1 | 0 | |a DIP |
| 690 | 1 | 0 | |a GRENVILLIAN OROGENY |
| 690 | 1 | 0 | |a MAFIC ROCK |
| 690 | 1 | 0 | |a MAGNETIC ANOMALY |
| 690 | 1 | 0 | |a NUMERICAL MODEL |
| 690 | 1 | 0 | |a OUTCROP |
| 690 | 1 | 0 | |a SUTURE ZONE |
| 690 | 1 | 0 | |a TECTONIC RECONSTRUCTION |
| 690 | 1 | 0 | |a THRUST |
| 690 | 1 | 0 | |a ULTRAMAFIC ROCK |
| 690 | 1 | 0 | |a UPLIFT |
| 690 | 1 | 0 | |a SIERRA DE PIE DE PALO |
| 690 | 1 | 0 | |a SIERRAS PAMPEANAS |
| 651 | 4 | |a ARGENTINA | |
| 651 | 4 | |a SAN JUAN [ARGENTINA] | |
| 651 | 4 | |a SOUTH AMERICA | |
| 700 | 1 | |a Vujovich, G.I. | |
| 700 | 1 | |a van Staal, C.R. | |
| 773 | 0 | |d 2009 |g v. 28 |h pp. 325-332 |k n. 4 |p J. South Am. Earth Sci. |x 08959811 |w (AR-BaUEN)CENRE-1080 |t Journal of South American Earth Sciences | |
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