Lineations and structural mapping of Io's paterae and mountains: Implications for internal stresses

•Lineations on the surface of Io, associated with its mountains and paterae, do not indicate that mountains and paterae are always genetically related, but that relationships between the two types of features may be governed locally.•Io's mountains form and change due to a combination of crustal stresses involving both global and local-scale processes, dominantly volcanic loading and tidal flexing.•Crustal stresses reactivate subsurface faults, sometimes obliquely, modifying the large, coherent crustal blocks that many of Io's mountains reside in.