“…Montjuïc is a gentle coastal relief, up to 175m in height, located between the Barcelona plain and the Llobregat delta. It is mainly composed of marls, sands, gravels, and conglomerates of deltaic origin, with a total thickness of about 200m (Gómez-Gras et al, 2001;Salvany, 2013;Villalta and Rosell, 1965;among others). Its abundant content of marine fauna led to attribute these deposits to the middle Miocene: Vindobonian, according to ancient paleontological studies (see Via and Padreny, 1972), or Serravallian, according to the more recent one by Parcerisa (2002).…”