Tafonomía cuantitativa del yacimiento de Cacela (Tortoniense superior; Algarve, Sur de Portugal)

• Autores: Alberto Rico García
• Localización: Geogaceta, ISSN 0213-683X, Nº. 40, 2006, págs. 207-210
• Idioma: español
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• Resumen

  • A quantitative taphonomic analysis were performed in the fossil assemblages of the late Tortonian of the lower-mid part of the Cacela Formation (Cacela, Algarve, S Portugal). Taphonomic results, together with sedimentological analysis and the faunal assemblages, allow to inferring palaeoenvironmental changes. The upper Tortonian sedimentation started with fan-delta conglomerates that quickly changed to outer-platform silty marls deposited in a setting with a relatively low sedimentation rate as indicated by the concentration of glauconite. Higher up into the section, a progressive shallowing trend is inferred, and sediments of inner platform settings were formed.