Abstract-Session-T03.txt

Late Quaternary uplift and coastal landscape evolution in northern Calabria Thomas Dewez, Colin Stark, Sebastien Huot, Mauro Cardinali, Michel Lamothe, Fausto Guzzetti The Calabrian arc has undergone rapid ($\sim$1mm/y) regional uplift since the mid-Quaternary, but its precise speed, timing, spatial pattern, and relation to faulting remain a mystery. This topic is one of the tasks undertaken under the NSF-funded Calabrian Arc Project (Calarco) in order to constrain the geodynamic evolution of the Calabrian Arc subduction zone. Glacio-eustatic sea-level change superimposed on the uplift have generated widespread flights of terraces and marginal marine deposits that can potentially constrain the geodynamic history in some detail. Such efforts have been frustrated so far by a lack of age control and by the lack of integration of geomorphic and sedimentary indicators. We have mapped sequences of Gilbert fan-delta and allied marginal marine deposits in the Crati and Sibari basins of northern Calabria, and we have examined their relationship to Late Quaternary fluvial and marine terraces. Using optically stimulated luminescence (OSL) dates and a reassessment of field relations, we have reinterpreted the Crati/Sibari fan-deltas as Late Quaternary sea-level controlled, rather than Early/Late-Quaternary fault-controlled. The result is a series of maps illustrating the emergence of central-northern Calabria and the history of its landscape evolution for the last five hundred thousand years. Meeting: 2008 Fall Meeting Section: Tectonophysics Special Session: T03 - Integrating the Effects of Exhumation, Erosion, and Tectonics Over Space and Time at Convergent Margins Title: Late Quaternary uplift and coastal landscape evolution in northern Calabria Author(s): Thomas Dewez, Colin Stark, Sebastien Huot, Mauro Cardinali, Michel Lamothe, Fausto Guzzetti Reference Number: 8879 Pin: 9416 Email: Dewez Thomas [t.dewez@brgm.fr]