Icnofacies Skolithos-Ophiomorpha en el Neogeno del valle inferior del río Chubut, provincia del Chubut, Argentina

• Autores: Roberto Ricardo Lech, Florencio Gilberto Aceñolaza, Mercedes M. Grizinik
• Localización: Serie correlación geológica, ISSN-e 1666-9479, ISSN 1514-4186, Vol. 14, Nº. 1, 2000
• Idioma: español
• Títulos paralelos:
  • The ichnofacies Skolithos-Ophiomorpha in Neogene of the Lower Valley of Rio Chubut, Chubut Province, Argentina
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• Resumen

  • The icnocoenosis Skolithos-Ophiomorpha of marine Neogen strata outcroping in lower valley of "Río Chubut", province of Chubut are described. The geological sections have common Ophiomorpha nodosa and the icnocoenosis of Cylindrichnus concentricus, Planolites beverleyensis, Polykladichnus irregularis, Rosselia socialis, Skolithos linearis y Thalassinoides suevicus.

    The association is representative of one littoral zone, intertidal to subtidal, with notable continuity along the thickness. Same confirm previous ideas on only one marine event in Middle Miocene (Tortonian) times.