Navegar

Colección

Datos Estadísticas

Artículo

El editor solo permite decargar el artículo en su versión post-print desde el repositorio. Por favor, si usted posee dicha versión, enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

The southern sector of Uruguay was intruded by numerous granitic plutons during the Brasiliano Cycle. The granites and granodiorites of the Carapé Complex comprise a large part of the Neoproterozoic terrain exposed in southern Uruguay. Typological and age relationships show that the characteristic of the granitic rocks changed during the Brasiliano Cycle. Four groups of granitoids can be distinguished according to their emplacement. The first group corresponds to the Campanero Unit, interpreted as a pre-Brasiliano basement, which includes mainly preorogenic granites. The second group, Pan de Azúcar and related granitoids, includes synorogenic granites and granodiorites. The third granitoid group, Dos Hermanos Granite and related plutons, is classified as late- to postorogenic granites. Finally, the fourth group, consisting of the Águila Granite and related plutons, is represented by alkaline amphibole-biotite granites and are considered as post-collisional alkaline granites, which we assign to an extensional event associated with post-collisional slab-break off marking the end of the late Proterozoic Brasiliano orogenic cycle. Most of the granitic plutons in this area (2,300 km2) are relatively well exposed and have well-defined intrusive relationships with the metamorphic country-rocks. These granitic rocks are the result of successive magma pulses from similar magma chambers through the late Proterozoic to early Paleozoic times.

Registro:

Documento: Artículo
Título:Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay)
Autor:Sánchez-Bettucci, L.; Oyhantçabal, P.; Page, S.; Ramos, V.A.
Filiación:Facultad de Ciencias, Inst. de Geologia y Paleontologia, Depto. de Geología, Montevideo, Uruguay
Facultad de Ciencias Exactas y Nat., Laboratorio de Tectonica Andina, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:Brasiliano Cycle; Geochemistry; Granitoids; Petrography; Uruguay; geochemistry; granite; granitoid; petrogenesis; petrography; pluton; prograde metamorphism; (Southeast); Uruguay
Año:2003
Volumen:6
Número:1
Página de inicio:89
Página de fin:105
DOI: http://dx.doi.org/10.1016/S1342-937X(05)70646-8
Título revista:Gondwana Research
Título revista abreviado:Gondwana Res.
ISSN:1342937X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1342937X_v6_n1_p89_SanchezBettucci

Referencias:

  • Basei, M.A.S., Teixeira, W., (1987) Texto Explicativo Do Mapa Geológico Do Estado de Santa Catarina 1:500.000, , DNPM/CPRM
  • Basei, M.A.S., Siga O., Jr., Reis Neto, J.M., Harara, O.M., Passarelli, C.R., Machiavalli, A., Geochronological map of the Precambrian terrains of Paraná and Santa Catarina States, southern Brazil: Tectonic implications (1997) South-Amer. Symp., 1, pp. 44-46. , Sāo Paulo, Isotope Geol
  • Batchelor, R.A., Bowden, P., Petrogenetic interpretation of granitoid rock series using multicationic parameters (1985) Chem. Geol., 48, pp. 43-55
  • Bonin, B., From orogenic to anorogenic settings: Evolution of granitoid suites after a major orogenesis (1990) J. Geol., 25, pp. 261-270
  • Bossi, J., Breve reseña sobre el conocimiento geológico del escudo predevoniano en Uruguay (Sud América) (1983) Zeit. Geol. Paläont., 1, pp. 417-429
  • Brown, G.C., Calc-alkaline intrusive rocks: Their diversity, evolution, and relation to volcanic arcs (1982) Orogenic Andesites and Related Rocks, pp. 437-461. , Thorpe, R.S. (Ed.), Wiley, London
  • Brown, G.C., Thorpe, R.S., Webb, P.C., The geochemical characteristics of granitoids in contrasting arcs and comments on magma sources (1984) J. Geol. Soc. London, 141, pp. 413-426
  • Cullers, R.L., Graf, J.L., Rare earth elements in igneous rocks of the continental crust: Predominantly basic and ultrabasic rocks (1984) Rare Earth Element Geochemistry, pp. 237-268. , Henderson, P. (Ed.), Elsevier, Amsterdam
  • Dewey, J.F., Extensional collapse of orogens (1988) Tectonics, 7, pp. 1123-1139
  • Fernandes, L.A.D., Tommasi, A., Porcher, C.C., Deformation patterns in the southern Brazilian branch of the Dom Feliciano Belt: A reappraisal (1992) J. South Amer. Earth Sci., 5, pp. 77-96
  • Fragoso-Cesar, A.R.S., O Cráton do rio de La Plata e o Cinturõ Dom Feliciano no Escudo Uruguaio-Sul-Riograndense (1980) XXXI Cong. Bras. Geol., 5, pp. 2879-2892. , Camboriú
  • Fragoso-Cesar, A.R.S., (1991) Tectônica de Placas No Ciclo Brasiliano: As Orogenias Dos Cinturões Dom Feliciano E Ribeira No Rio Grande Do Sul, , Ph.D. Thesis, Univ. São Paulo, 467p
  • Fragoso-Cesar, A.R.S., Machado, R., Gomez Rifas, C., Observaçōes sobre o cinturāo Dom Feliciano no Escudo Uruguaio e correlaçōes com o escudo do R.G do Sul (1987) III Symp. Sul-Bras. Geol., 2, pp. 791-809. , Curitiba
  • Gastal, M.C.P., Vasquez, M., Gotardo, E., Nardi, L.V.S., Bitencourt, M.F., Diversidade composicional entre granitos metaluminosos de afinidade alcalina: exemplos do escudo Sul-Rio-Grandense, R.S (1995) VI Simp. Bras. Geol. E I Encontro de Geol. Cone Sul, 1, pp. 63-66. , Porto Alegre
  • Harris, N.B.W., Pearce, J.A., Tindle, A.G., Geochemical characteristics of collision-zone magmatism (1986) Collision Tectonics, 19, pp. 67-81. , Coward, M.P. and Riess, A.C. (Eds.), Geol. Soc. Spl. Publ
  • International subcomisión on stratigraphic classification of IUGS. International commission on stratigraphic (1994) A Guide to Stratigraphic Classification, Terminology, and Procedure, , International Stratigraphic Guide (ISG) Salvador, A. (Ed.), 214p
  • Irvine, T.N., Baragar, W.R.A., A guide to the chemical classification of the common volcanic rocks (1971) Can. J. Earth Sci., 8, pp. 523-547
  • La Roche, H., Leterrier, J., Grandclaude, P., Marchal, M., A classification of volcanic and plutonic rocks using R1-R2 diagram and major element analysis. Its relationships with current nomenclature (1980) Chem. Geol., 29, pp. 183-210
  • Le Maitre, R.W., (1989) A Classification of Igneous Rocks and Glossary of Terms, , (Ed.), Blackwell, Oxford, 193p
  • Linares, E., Sánchez-Bettucci, L., Edades Rb/Sr y K/Ar del cerro Pan de Azúcar, Piriápolis, Uruguay (1997) South Amer. Symp. Isotope Geol., 1, pp. 176-180. , San Pablo
  • Maniar, P.D., Piccoli, P.M., Tectonic discrimination of granitoids (1989) Geol. Soc. Amer. Bull., 101, pp. 635-643
  • Mantovani, M.S.M., Shukowsky, W., Hallinan, S.E., Análise da espessura elástica efetiva no segmento litosférico Rio de La Plata-Dom Feliciano (1995) Anais Da Academia Brasileira de Ciencias, 67, pp. 199-220
  • O'Connor, J.T., A classification for quartz-rich igneous rock based on feldspar ratios (1965) U.S. Geol. Surv. Prof. Paper, 52 SB, pp. 79-84
  • Oyhantçabal, P., Derregibus, M.T., De Souza, S., Geología do extremo sul da Formaçao Sierra de Animas (Uruguay) (1993) V Simp. Sul-Bras. Geol., 1, pp. 4-5. , Curitiba
  • Paterson, S.T., Tobisch, U.T., Vernon, R.M., Criteria for establishing the relative timing of pluton emplacement an regional deformation. Penrose conference report (1989) Geology, pp. 475-476
  • Pearce, J.A., Harris, N.B.W., Tindle, A.G., Trace element discrimination diagrams for the tectonic interpretation of granitic rocks (1984) J. Petrol., 25, pp. 956-983
  • Pearce, J.A., Keskin, M., Mitchell, J.G., Volcano-stratigraphy and geochemistry of collision-related volcanism on the Erzurum-Kars Plateau, northeastern Turkey (1998) J. Volc. Geoth. Res., 85, pp. 355-404
  • Preciozzi, F., Spoturno, J., Heinzen, W., Rossi, P., (1985) Carta Geológica Del Uruguay a Escala 1:500.000, , Dirección Nacional de Minería y Geología, Montevideo, 92p
  • Preciozzi, F., Masquelin, H., Sánchez-Bettucci, L., Geología de la Porción sur del Cinturón Cuchilla de Dionisio. In: Field guide (1993) 1 Simp. Int. Neoprot.-Cámbrico Cuenca Del Plata, pp. 1-39. , DINAMIGE, Montevideo
  • Sánchez-Bettucci, L., (1998) Evolución Tectónica Del Cinturón Dom Feliciano En la Región Minas-Piriápolis, Uruguay, , Ph.D. Thesis, Universidad de Buenos Aires, 344p
  • Sánchez-Bettucci, L., Linares, E., New geochronological data of Carapé complex Granitoids, Uruguay (1999) South Amer. Symp., 1, pp. 111-113. , Córdoba, Argentina. Isotope Geol
  • Sánchez-Bettucci, L., Rapalini, A.E., Paleomagnetism of The Sierra de Las Animas Complex, Southern Uruguay: Its implications in the assembly of western Gondwana Precamb. Res., , in press
  • Sánchez-Bettucci, L., Cosarinsky, M., Ramos, V.A., Tectonic setting of the late Proterozoic Lavalleja Group (Dom Feliciano Belt) Uruguay (2001) Gondwana Res., 4, pp. 395-407
  • Solíani E., Jr., (1986) Os Dados Geocronológicos Do Escudo Sul-Rio Grandense E Suas Implicaçoes De Ordem Geotectônica, , Ph.D. Thesis, Univ. São Paulo, São Paulo, 243p
  • Sun, S.S., Chemical composition and origin of the Earth's primitive mantle (1982) Geochim. Cosmochim. Acta, 46, pp. 179-192
  • Post-collisional alkaline granites (1989) J. Geol., 97, pp. 261-280. , Sylvester
  • Tommasi, A., Fernandes, L.A., O Ciclo brasiliano na porçao sudeste da plataforma sul americana: Un novo modelo (1990) Primer Cong. Urug. Geol., 1, pp. 107-114
  • Walther, K., Consideraciones sobre los restos de un elemento estructural, aún desconocido del Uruguay y el Brasil más meridional (1927) Bol. 10 Inst. Geol. Perf., , 381p

Citas:

---------- APA ----------
Sánchez-Bettucci, L., Oyhantçabal, P., Page, S. & Ramos, V.A. (2003) . Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay). Gondwana Research, 6(1), 89-105.
http://dx.doi.org/10.1016/S1342-937X(05)70646-8
---------- CHICAGO ----------
Sánchez-Bettucci, L., Oyhantçabal, P., Page, S., Ramos, V.A. "Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay)" . Gondwana Research 6, no. 1 (2003) : 89-105.
http://dx.doi.org/10.1016/S1342-937X(05)70646-8
---------- MLA ----------
Sánchez-Bettucci, L., Oyhantçabal, P., Page, S., Ramos, V.A. "Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay)" . Gondwana Research, vol. 6, no. 1, 2003, pp. 89-105.
http://dx.doi.org/10.1016/S1342-937X(05)70646-8
---------- VANCOUVER ----------
Sánchez-Bettucci, L., Oyhantçabal, P., Page, S., Ramos, V.A. Petrography and geochemistry of the Carapé Granitic Complex (Southeastern Uruguay). Gondwana Res. 2003;6(1):89-105.
http://dx.doi.org/10.1016/S1342-937X(05)70646-8