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Abstract:

Preliminary results are presented based on the analysis of kinematics and finite strain associated with pre-Carboniferous tectonometamorphic events recorded in various basement blocks of NW Argentina (Sierras Pampeanas, southern Puna). It would appear that various granitoids and their metamorphic country rocks have been affected by the same deformational phase: a N-S trending foliation, sometimes gently dipping, associated with a pronounced stretching lineation generally showing steep pitchs. Kinematic criteria indicate that movements were mostly vertical or involved thrusting of the eastern block over the western block. In some rare cases, the movement picture is reversed, with overthrusting of the western block onto the eastern block. Andean tectonic activity can cause local complications to these interpretations by introducing tilting or rotation of the blocks. However, on the basis of present study, it is possible to establish that tectonic events affecting the pre-Carboniferous basement involved thrusting with minor wrenching. Two main structural domains can be recognized: in the south, the Sierras Pampeanas, characterized by westward-directed thrusting; in the north, near the edge of the Puna region, more variable kinematics are associated with thrusting towards the east and also towards the west. In this way, it is possible to confirm the existence of an E-W compressive regime during pre-Carboniferous times across the entire western border of the Pre-Andean basement. This compression contributed to crustal thickening and the bringing together of previously widely separated blocks. The systematic observation of geometric and kinematic criteria associated with ductile deformation should enable us to place better constraints on geodynamic interpretations of the Pre-Andean domain. © 1994.

Registro:

Documento: Artículo
Título:Kinematics of early paleozoic ductile deformation in the basement of NW Argentina
Autor:Le Corre, C.A.; Rossello, E.A.
Filiación:Géosciences-Rennes, Université de Rennes, Campus de Beaulieu, 35042 Rennes Cédex, France
Departamento de Ciencias Geológicas (CONICET), Universidad de Buenos Aires, Pabellon II, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:basement; deformation; foliation; Palaeozoic; tectonics; thrusting; Argentina, Puna; Argentina, Sierra Pampeanas
Año:1994
Volumen:7
Número:3-4
Página de inicio:301
Página de fin:308
DOI: http://dx.doi.org/10.1016/0895-9811(94)90016-7
Título revista:Journal of South American Earth Sciences
Título revista abreviado:J. South Am. Earth Sci.
ISSN:08959811
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v7_n3-4_p301_LeCorre

Referencias:

  • Aceñolaza, Toselli, Geología del Noroeste argentino (1981) Publicación Especial Facultad Ciencias Naturales, 1287, p. 212. , Universidad Nacional Tucumán
  • Aceñolaza, Toselli, Lower Ordovician volcanism in north west Argentina (1984) Aspects of the Ordovician System, 295, pp. 203-209. , D.L. Bruton, Paleont. Contrib., Univ. Oslo
  • Allmendinger, Ramos, Jordan, Palma, Isacks, Paleogeography and Andean structural geometry, Northwest Argentina (1983) Tectonics, 2 (1), pp. 1-16
  • Allmendinger, Marrett, Eremchuk, Alonso, Deformación neotectónica de la Puna Austral (1987) Decimo Congreso Geológico Argentino (San Miguel de Tucumán), Actas, 1, pp. 235-238
  • Bahlburg, The “Faja Eruptiva de la Puna Oriental” in the northern Argentinian Puna revisited: granitoid emplacement in a Late-Ocloyic (Silurian?) sinistral strike-slip zone (1990) XI Congreso Geológico Argentino Tucumán, 2, pp. 297-300
  • Bahlburg, Breitkreuz, Paleozoic evolution of active margin basins in the southern Central Andes (Northwestern Argentina and northern Chile) (1991) Journal of South American Earth Sciences, 4 (3), pp. 171-188
  • Berthé, Choukroune, Jégouzo, Orthogneiss, mylonite and non coaxial deformation of granites: the example of the South Armoricain Shear Zone (1979) Journal of Structural Geology, 1 (1), pp. 31-42
  • Caminos, Sierras Pampeanas Noroccidentales: Salta, Tucumán, Catamarca, La Rioja y San Juan (1979) Segundo Simposio de Geología Regional Argentina, 1, pp. 225-291. , Academia Nacional de Ciencias, Córdoba
  • Cobbold, Gapais, Shear criteria in rocks: an introductory review (1987) Journal of Structural Geology, 9 (5-6), pp. 521-523
  • Coira, Davidson, Mpodozis, Ramos, Tectonic evolution of the Andes of Northern Argentina and Chile (1982) Earth Sciences Review, 18, pp. 303-332
  • Dalla Salda, Cingolani, Varela, Early Paleozoic orogenic belt of the Andes in the southwestern South America: Result of Laurentia-Gondwana collision? (1992) Geology, 20, pp. 617-620
  • Damm, Pichowiak, Harmon, Todt, Kelley, Omarini, Niemeyer, Pre-Mesozoic evolution of the Central Andes; the basement revisited (1990) Plutonism from Antarctica to Alaska, 241, pp. 101-126. , S. Mahlburg Kay, C.W. Rapela, Geological Society of America, Special Paper
  • Dunnet, A technique of finite strain analysis using elliptical particles (1969) Tectonophysics, 7, pp. 117-136
  • Flinn, On folding during three-dimensional progressive deformation (1962) Quart. Journal Geological Society, 118, pp. 385-433
  • Gapais, Les orthogneiss, structures, mecanismes de deformation et analyse cinématique (1989) Memoires et Documents du CAESS, 28, p. 366. , (Rennes)
  • García, Rossello, Geología y depósitos minerales de Papachacra, Depto Belén, Catamarca, Argentina, Actas (1984) IX Congreso Geológico Argentino, Bariloche, 5, pp. 250-275
  • González Bonorino, Descripción geológica de la Hoja 14 f, San Fernando del Valle de Catamarca (1978) Boletin 160. Servicio Geológico Nacional, , (Buenos Aires)
  • Hervé, Late Paleozoic subduction and accretion in Southern Chile (1988) Episodes, 11 (3), pp. 183-188
  • Méndez, Navarini, Plaza, Viera, Faja eruptiva de la Puna Oriental Actas (1973) V Congreso Geológico Argentino, Bahia Blanca, 4, pp. 89-100
  • Omarini, Viramonte, Cordani, Salfity, Kawashita, Estudio geocronológico Rb/Sr de la faja eruptiva de la Puna en el sector de San Antonio de los Cobres, prov. Salta. Actas (1984) IX Congreso Geológico Argentino, Bariloche, 3, pp. 146-158
  • Ramos, Late Proterozoic-Early Paleozoic of South America collisional History (1988) Episodes, 11 (3), pp. 168-174
  • Ramsay, (1967) Folding and fracturing of rocks, p. 568. , McGraw Hill Ed, New York
  • Ramsay, Graham, Strain variations in shear belts (1970) Canadian Journal of Earth Sciences, 7, pp. 786-813
  • Ramsay, Huber, (1983) The techniques of modern Structural Geology. Vol. 1.: Strain analysis, p. 307. , Academic Press, London
  • Rapela, Coira, Toselli, Saavedra, El magmatismo del Paleozoico Inferior en el Sudoeste de Gondwana (1992) Paleozoico Inferior de Ibero-América, pp. 21-68. , J.G. Gutiérrez, J. Saavedra, I. Rábano, Univ. de Extremadura, Spain
  • Rossello, (1983) Geología del Complejo Volcánico Vicuña Pampa, Departamento Belén, Catamarca, p. 250. , FCEN, University of Buenos Aires, Unpublished Thesis No. 1809
  • Rossello, Le Corre, Evidencias cinemáticas de una tectónica cabalgante paleozoica inferior en el sector austral de la faja eruptiva de la Puna oriental, Catamarca, Argentina. Actas (1989) Reunión Geotransectas América del Sur, 1, pp. 185-189. , CAPLI, Mar del Plata
  • Rossello, Idoyaga, Le Corre, Evaluación del emplazamiento del stock Los Ratones (Fiambalá, Catamarca, Argentina), a partir del análisis geométrico de nódulos de su encajante (1990) Reunión de Microtectónica, , Academia de Ciencias Exáctas, Físicas y Naturales, Actas, (In press)
  • Rossello, Le Corre, Gapais, Cobbold, La cinemática precarbonífera del Noroeste Argentino a partir del análisi de criterios de deformación dúctil en rocas granitoides y metamórficas (1991) 5th International Circum-Pacific Terrane Conference, p. 42. , Communicaciones. Universidad de Chile, Santiago
  • Saavedra, Pellitero-Pascual, Rossi, Toselli, Magmatic evolution of the Cerro Toro granite, a complex Ordovician pluton of northwestern Argentina (1992) Journal of South American Earth Sciences, 5 (1), pp. 21-32
  • Sibson, Fault rocks and fault mechanisms (1977) Jour. Geol. Soc. London, 133, pp. 191-313
  • Simpson, Schmid, An evaluation of criteria to deduce the sense of movement in sheared rocks (1983) Geological Society of America, Bulletin, 94, pp. 1281-1288
  • Toselli, Dalla Salda, Caminos, Evolución metamórfica y tectónica del Paleozoico Inferior de Argentina (1992) Paleozoico Inferior de Ibero-América, pp. 279-309. , J.G. Gutiérrez, J. Saavedra, I. Rábano, Univ. de Extremadura, Spain
  • Turner, Estratigrafía de la región al naciente de la Laguna Blanca (Catamarca) (1963) Rev Med Inst Mex Seguro Soc, 17 (1-2), pp. 11-45
  • Turner, Descripción geológica de la hoja 11d, Laguna Blanca, prov. de Catamarca (1973) Secretaría de Estado de Minería, 142 Boletín, p. 72
  • Watterson, Homogeneous deformation of the gneisses of Vesterland, Southwest Greenland (1968) Grøn. Geol. Unders. Bulletin, p. 78

Citas:

---------- APA ----------
Le Corre, C.A. & Rossello, E.A. (1994) . Kinematics of early paleozoic ductile deformation in the basement of NW Argentina. Journal of South American Earth Sciences, 7(3-4), 301-308.
http://dx.doi.org/10.1016/0895-9811(94)90016-7
---------- CHICAGO ----------
Le Corre, C.A., Rossello, E.A. "Kinematics of early paleozoic ductile deformation in the basement of NW Argentina" . Journal of South American Earth Sciences 7, no. 3-4 (1994) : 301-308.
http://dx.doi.org/10.1016/0895-9811(94)90016-7
---------- MLA ----------
Le Corre, C.A., Rossello, E.A. "Kinematics of early paleozoic ductile deformation in the basement of NW Argentina" . Journal of South American Earth Sciences, vol. 7, no. 3-4, 1994, pp. 301-308.
http://dx.doi.org/10.1016/0895-9811(94)90016-7
---------- VANCOUVER ----------
Le Corre, C.A., Rossello, E.A. Kinematics of early paleozoic ductile deformation in the basement of NW Argentina. J. South Am. Earth Sci. 1994;7(3-4):301-308.
http://dx.doi.org/10.1016/0895-9811(94)90016-7