Construction of a chronostratigraphic diagram for a high-frequency sequence: The 20 ky B.P. to present Tiber depositional sequence

Abstract

The Tiber Depositional Sequence (TDS) is part of a 4th and/or a 5th-order sequence which developed on the eastern Tyrrhenian Margin during the last glacio-eustatic cycle. Parasequences and depositional systems belonging to lowstand, transgressive and highstand systems tracts are recognised within the sequence. The chronostratigraphic surfaces bounding these systems tracts have been identified using high-resolution seismic data and well logs. These data together with radiocarbon datings and archaeological evidence have been used to construct the chronostratigraphic diagram of the Tiber Depositional Sequence. This paper reports on the method used and stresses that sequence-stratigraphy analysis oan provide a substantial contribution to the investigation of sedimentary successions forming over a short period under conditions of abundant sediment supply and high-amplitude eustatic oscillations.