Provenance and Paleogeographic Evolution in a Multi-Source Foreland: The Cenozoic Venetian Friulian Basin (NE Italy)

摘要

Diachronous deformation and exhumation of the Dinaric, eastern Southern Alps, and Northern Apennine belts caused a complex pattern of sedimentation and dispersal in the Venetian–Friulian Basin. Our dataset provides, for the first time, a comprehensive picture of the Cenozoic evolution across the whole basin. Growth and erosion of the three chains feeding the Venetian–Friulian Basin are here traced by combination of multiple analytical techniques. We examine the terrigenous and intrabasinal supply to the basin by using arenite petrography (gross composition, heavy minerals) and apatite fission-track analysis framed in an updated stratigraphy. Data come from both outcropping and subsurface Eocene to Pleistocene strata and are compared with the modern river sediments of the study area. On the basis of this approach, we present a schematic temporal and paleogeographic evolution of the Venetian–Friulian Basin from the Eocene to Present.