The data-set contains nine apatite fission-track data from samples collected at strategic locations to constrain the age of deformation along an ideal transect crossing the main Apennine watershed (from the north-eastern margin of the Casentino Basin to the Romagna Apennines.
Apatite grains for fission-track analysis were separated from ~5 kg bulk samples. Four of them were collected from the Falterona Sandstones (Chattian-Aquitanian) and five in the Marnoso- Arenacea For-mation (Burdigalian-Tortonian). Apatite grains were separated using standard heavy liquids and a mag-netic technique.