Estructura extensional e inversión tectónica en los Andes argentinos entre los 30º 30' y 31º OO'S.

• Heredia, N. ^[2] ; Rodríguez Fernández, L.R. ^[1] ; Ragona, D. ^[3]
  1. [1] Instituto Geológico y Minero de España

     Instituto Geológico y Minero de España

     Madrid, España

     
  2. [2] nstituto Geológico y Minero de España (IGME)
  3. [3] Servicio Geológico Argentino, Argentina

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• Localización: Geogaceta, ISSN 0213-683X, Nº. 20, 4, 1996 (Ejemplar dedicado a: Comunicaciones presentadas en el IV Congreso Nacional de Geología, Alcalá de Henares, 1996), págs. 864-866
• Idioma: español
• Títulos paralelos:
  • Extensional tectonic and inversion in the argentine Andean Cordillera between 30º 30' and 31º 00' S latitude
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• Resumen

  • In the Andean Frontal Cordillera two tectonostratigraphic main groups can be defined: a gondwanic basament constituted by devonian and Permo-Carboniferous marine sedimentary rocks, intruded by Upper Paleozoic granitic rocks, and Andean continental volcanic and volcanoclastic unit, essentially Mesozoic and Tertiary, intruded by Triassic to Miocene stocks. The paleozoic rocks has a characteristic thin skinned structure with East transport direction and remarcable tangential shortenning. In the Andean rocks two tectonostratigraphic grous can be also defined: a mesozoic preorogenic sequence linked with extensionaltectonic event, and a tertiary sinorogenic sequence linked with compresional tectonic event.