Constraints and new problems for geodynamical modelling of central Italy (CROP 11 Civitavecchia - Vasto deep seismic line)

Tbc preliminary studies io the acquisition of tbc CROP Project deep scismic bnes provide the opportunity for a full revision of geological and geophysical data available for Central Italy in tbc area along the CROP 11 profile and its off-shore prosecution in tbc Adriatic and Tyrrhenian sea. Furthermore new data are reported, with special emphasis on the Apermine chain s.s.. Many of these data come from the co-ordinated work of a group based ai the Dipartimento Scienze della Terra of La Sapienza University in Rome. Other data are derived from specific preliminary studies. The resulting regional framework is better defined and more complex than previous models. Some new evidenee is considered bere of regional importance and is briefly illustrated io show tbc various deformational styles present within the whole complex of the Aperminic chain. All of tbc reported field examples are associated with meso-structural analysis. A comparison of these results led io the identification of a specific sector with particular characteristics. New field data together with some general assumptions allow a tentative computation of the minimal percentage sbortening of the central sector of tbc Apenninic chain; tbc derived value (about 57%) excecds the expected value and should be further investigated. New constrainis for a geodynamical model of Central Italy are suggested.