Out of phase Quaternary uplift-rate changes reveal normal fault interaction, implied by deformed marine palaeoshorelines

We have mapped and constrained the timing of tectonically deformed uplifted Late Quaternary palaeoshorelines in Messina Strait, southern Italy, an area above a subduction zone containing active normal faults. The are preserved from up to thirteen sea-level highstands, providing record deformation over this timescale (~500 ka) for Messina-Taormina Fault, Reggio Calabria Fault Armo Fault. reveal spatial patterns uplift through time along strike these faults, and, given across arrangement also how contribution each fault regional strain-rate progressed time. results that rates within hangingwalls footwalls were not constant time, with marked change location strain accumulation at ~50 ka. rates, once converted into throw-rates, imply three faults comprised similar throw-rates prior ka (in range 0.77–0.96 mm/yr), then switching lower (0.32 mm/yr 0.33 respectively), whilst accelerated 2.34 mm/yr. extension rate, gained by summing implied heave was maintained despite re-organisation local explain out-of-phase throw-rate changes during constant-rate conditions as due interactions between upper plate finally discuss changing may affect long-term seismic hazard assessment systems.