Paleoecología de los niveles lumaquélicos con Heterostegina en el Tortoniense del sector central de la Cuenca del Guadalquivir (SO España)

• Tosquella, J. ^[1] ; Abad, M. ^[1] ; González-Regalado, M.L. ^[1] ; Ruiz, F. ^[1] ; Pendón, J.G. ^[1]
  1. [1] Universidad de Huelva

     Universidad de Huelva

     Huelva, España

     
• Localización: Geogaceta, ISSN 0213-683X, Nº. 33, 2002, págs. 23-26
• Idioma: español
• Títulos paralelos:
  • Paleoecology of the lumaquellic Heterostegina levels in the Tortonian central sector of the Guadalquivir Basin (SW Spain).
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• Resumen

  • The lumaquellic levels with Heterostegina in a detritic-bioclastic succession (Km 98 section) located in the central sector of the Guadalquivir Basin has been studied. The sedimentological and micropaleontological analysis (Iarger foraminifera, benthic and planktic microforaminifera, and ostracoda) allows deduce an outer infralittoral environment of deposition for these levels. Larger foraminifera (Heterostegina) could dominate the more oligotrophic depositional conditions during intervals of sea level rise; ostracoda and small benthic foraminifera could dominate preferably the more eutrophic ones during intervals of continental clastic input.