Artículo

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) Journal of the Geological Society. 171(3):313-328
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Abstract:

A multidisciplinary study (U-Pb sensitive high-resolution ion microprobe geochronology, Hf and O isotopes in zircon, Sr and Nd isotopes in whole-rocks, as well as major and trace element geochemistry) has been carried out on granitoid samples from the area west of Valcheta, North Patagonian Massif, Argentina. These confirm the Cambrian age of the Tardugno Granodiorite (528 ± 4 Ma) and the Late Permian age of granites in the central part of the Yaminué complex (250 Ma). Together with petrological and structural information for the area, we consider a previously suggested idea that the Cambrian and Ordovician granites of northeastern Patagonia represent continuation of the Pampean and Famatinian orogenic belts of the Sierras Pampeanas, respectively. Our interpretation does not support the hypothesis that Patagonia was accreted in Late Palaeozoic times as a far-travelled terrane, originating in the Central Transantarctic Mountains, and the arguments for and against this idea are reviewed. A parautochthonous origin is preferred with no major ocean closure between the North Patagonian Massif and the Sierra de la Ventana fold belt. © 2014 The Geological Society of London.

Registro:

Documento: Artículo
Título:The Gondwana connections of northern Patagonia
Autor:Pankhurst, R.J.; Rapela, C.W.; López de Luchi, M.G.; Rapalini, A.E.; Fanning, C.M.; Galindo, C.
Filiación:British Geological Survey, Keyworth NG12 5GG, United Kingdom
Centro de Investigaciones Geológicas, Universidad Nacional de La Plata, 644 Calle No. 1, 1900 La Plata, Argentina
Instituto de Geocronología y Geología Isotópica (INGEIS), Universidad de Buenos Aires-CONICET, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires, Departamento de Ciéncias Geológicas, Universidad de Buenos Aires-CONICET, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Research School of Earth Sciences, The Australian National University, Canberra, ACT 201, Australia
Departamento de Petrología y Geoquímica, Universidad Complutense de Madrid-IGEO (UCM CSIC), Madrid 28040, Spain
Palabras clave:Geochronology; Granite; Isotopes; Lead; Neodymium; Silicate minerals; Uranium; Hf and O isotopes; Major and trace elements; Northern patagonia; Orogenic belts; Sensitive high-resolution ion microprobe; Sierras pampeanas; Sr and Nd isotopes; Structural information; Strontium; fold belt; geochronology; Gondwana; granitoid; granodiorite; hafnium; ion microprobe; neodymium isotope; oxygen isotope; petrology; strontium isotope; trace element; uranium-lead dating; zircon; Antarctica; Argentina; Buenos Aires [Argentina]; Patagonia; Sierra de la Ventana; Sierras Pampeanas; Transantarctic Mountains
Año:2014
Volumen:171
Número:3
Página de inicio:313
Página de fin:328
DOI: http://dx.doi.org/10.1144/jgs2013-081
Título revista:Journal of the Geological Society
Título revista abreviado:J. Geol. Soc.
ISSN:00167649
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00167649_v171_n3_p313_Pankhurst

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Citas:

---------- APA ----------
Pankhurst, R.J., Rapela, C.W., López de Luchi, M.G., Rapalini, A.E., Fanning, C.M. & Galindo, C. (2014) . The Gondwana connections of northern Patagonia. Journal of the Geological Society, 171(3), 313-328.
http://dx.doi.org/10.1144/jgs2013-081
---------- CHICAGO ----------
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" . Journal of the Geological Society 171, no. 3 (2014) : 313-328.
http://dx.doi.org/10.1144/jgs2013-081
---------- MLA ----------
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" . Journal of the Geological Society, vol. 171, no. 3, 2014, pp. 313-328.
http://dx.doi.org/10.1144/jgs2013-081
---------- VANCOUVER ----------
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. J. Geol. Soc. 2014;171(3):313-328.
http://dx.doi.org/10.1144/jgs2013-081