Paleoperfiles de alteración en sustrato granítico en el borde de la Cuenca Surporenaica Oriental

• D. Gómez-Gras ^[1] ; G. Lacasa ^[2] ; J.A. Núñez ^[1] ; T. Sanfeliu ^[2]
  1. [1] Universitat Autònoma de Barcelona

     Universitat Autònoma de Barcelona

     Barcelona, España

     
  2. [2] Universitat Jaume I

     Universitat Jaume I

     Castellón, España

     
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 2, 2000 (Ejemplar dedicado a: IV Congreso del Grupo Español del Terciario (Tremp, 19-21 septiembre, 2000)), págs. 103-105
• Idioma: español
• Enlaces
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• Resumen

  • The Eastern South Pyrenean Eocene Foreland Basin, located in the eastern margin of the Ebro Basin, is formed by a tectonically active border in the N (that corresponds to the Pyrenees) and a passive wedge in the 5 (that corresponds to the Catalan Coastal Ranges). During the Lower Eocene, a continental sedimentation of red alluvial fans (braid-delta type) took place in the passive margin close to the source area (probably the Montseny Massif). These deposits were allowed by a paleoweathering profile formed in the Paleozoic metamorphic and plutonic rocks, but before the alluvial sedimentation, a tertiary carbonade pedogenetic soil had grown up on the paleoweathering profile.