Allogenic contact caves in Central East Sardinia (Italy): their speleogenesis and evolution

Laura Sanna (*,**), Jo De Waele (***), José María Calaforra (**), Antonio Rossi (°), Salvatore Cabras (°°) & Alberto Muntoni (°°°)
(*) Department of Sciences for Nature and Environmental Resources, University of Sassari, Italy. E-mail: speleokikers@tiscali.it (**) Department of Hydrology, University of Almeria, Spain. (***) Istituto Italiano di Speleologia, University of Bologna, Italy. E-mail: jo.dewaele@unibo.it (°) Department of Earth Sciences, University of Modena & Reggio Emilia, Italy. (°°) Gruppo Archeologico Speleologico Ambientale Urzulei, Italy. (°°°) Centro Speleologico Cagliaritano, Italy.