Onshore to offshore correlation of regional unconformities in the Plio-Pleistocene sedimentary successions of the Calabrian Arc (central Mediterranean)

摘要: Abstract Three regional unconformity surfaces typify the Plio-Pleistocene fill of onshore to offshore basins Calabrian Arc, an arcuate terrane migrating SE above NW subducting Ionian lithosphere, between southern Apennines and Sicily. These formed in mid-Pliocene (late Zanclean early Piacenzian), Pleistocene (intra-Gelasian) mid-Pleistocene Calabrian). Their expression varies significantly across area, so that from one three unconformities may be recognized within any given basin. Several lines evidence suggest spatially variable development Arc records interruptions subsidence by phases uplift deformation, related extent nature successive tectonic events linked episodic subduction zone retreat slab fragmentation during interval. In particular, is associated with deformation on flank interrupted a phase basin coeval opening Vavilov back-arc basin, record either interference Apulian microplate, or episode out-of-sequence thickening within` advancing accretionary wedge. The two bracket collapse northern Calabria coincides ultra-fast Marsili backarc are contractional–transpressional adjacent microplates. recognition synchronous provides key references for further studies geodynamic evolution central Mediterranean.