Foraminiferos bentonicos y ambientes deposicionales holocenos en la marisma de Busturia (reserva de la biosfera de Urdaibai, costa vasca)

• Ana Pascual ^[1] ; J. Rodríguez-Lázaro ^[1] ; O. Weber ^[2] ; J. M. Jouanneau ^[2] ; M. Martín- Rubio ^[1] ; Xabier Murelaga ^[1]
  1. [1] Universidad del País Vasco/Euskal Herriko Unibertsitatea

     Universidad del País Vasco/Euskal Herriko Unibertsitatea

     Leioa, España

     
  2. [2] University of Bordeaux

     University of Bordeaux

     Arrondissement de Bordeaux, Francia

     
• Localización: Contribuciones al estudio del periodo cuaternario / coord. por Javier Lario, Pablo G. Silva Barroso, 2007, ISBN 978-84-7484-201-2, págs. 79-80
• Idioma: español
• Texto completo no disponible (Saber más ...)
• Resumen

  • Sedimentological and micropalaeontological (benthic foraminifers) content of three cores from the Busturia marsh in the Natural Reserve of Urdaibai have been analysed in order to know the evolution of these marsh areas duringthe final Quaternary. The study has been completed with absolute 14C 14 datations. Four assemblages of benthic foraminifers have been identified in relation to different depositional environments. These environments change from the shelf marine (bottom cores) to those of estuarine mud flat and low marsh in the middle part, up to the recent environment of vegetated middle marsh. All three cores depict emergence sequences interrupted by one transgressive marine pulse (1900+50 BP).