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Highlights: [•] Relationships between latest quaternary brittle structures and seismicity in a sector of the inner Northern Apennines. [•] Role of active faults for hydrothermal fluids migration in the upper crust, thermal springs location and CO2 discharging. [•] Geodynamics implication for the inner Northern Apennines. [Copyright &y& Elsevier]

The transition between the central and southern Apennines (Italy) is marked, among other regional features, by a dramatic shift (from SW-dipping to NE-dipping) of the vergence of the large (more than 25 km long) seismogenic normal faults, responsible for M>6 pre-historical and historical earthquakes. Also, in the exact area where such accommodation occurs, in 2005 a low magnitude (M<3) seismic sequence took place along a short stretch of a long-lived transverse structure running across this transition zone. We believe this sequence sheds light on the geometry and the role of the interaction between these seismogenic domains. [ABSTRACT FROM AUTHOR]