Estratigrafía del Ilerdiense en la región de Tremp (cuenca de Graus-Tremp, NE de España).

• Autores: X. Barberà, Mariano Marzo Carpio, Salvador Reguant Serra, Josep Serra i Kiel, Josep Maria Samsó, Josep Tosquella Angrill
• Localización: Geogaceta, ISSN 0213-683X, Nº. 20, 1, 1996, págs. 73-76
• Idioma: español
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• Resumen

  • A new stratigraphic subdivision of the Herdian stratotype in the Tremp basin is proposed. The Figols Croup has been defined as a new unit which comprises a succession of shallow marine sediments about 750 m thick. This group is formed by three formations and nine members and was deposited between 55.7 Ma and 52.5 Ma, contemporaneously to the emplacement of the Montsec thrust sheet. A new correspondence between macroforaminifera biozones and lithostratigraphic units is proposed. The Figols Croup records a vertical evolution characterized by the superposition of carbonatic, litharenitic and arkosic materials which coincides with the three defined formations