By matching interpretation of seismic profiles of the Friuli pre-Alpine area with the
surficial data collected during the detailed geological survey (CARG - FVG project),
we have reconstructed the deep arrangement of the Susans-Tricesimo thrust (which
is considered the seismogenic source of the 6 May 1976 earthquake, MW 6.45). The
structural framework of the upper crust in Friuli is here updated, suggesting a new
seismotectonic model based on the slip partitioning between the Idrija-Ampezzo right
lateral strike-slip system and the SSW-verging thrust system of central-eastern Friuli.
This new seismotectonic model may have crucial consequences for the assessment of
seismic hazard in Friul