Tremp Formation
The Tremp Formation (Spanish: Formación de Tremp, Catalan: Formació de Tremp), alternatively described as Tremp Group (Spanish: Grupo Tremp), is a geological formation in the comarca Pallars Jussà, Lleida, Spain. The formation is restricted to the Tremp or Tremp-Graus Basin (Catalan: Conca de Tremp), a piggyback foreland basin in the Catalonian Pre-Pyrenees.