Exhumation and erosion of the Northern Apennines, Italy: new insights from low-temperature thermochronometers

Abstract. Analysis of new detrital apatite fission-track (AFT) ages from modern river sands, published bedrock and AFT ages, (U-Th)/He (AHe) the Northern Apennines provides insights into spatial temporal patterns erosion rates through time across orogen. The pattern time-averaged derived AHe Ligurian side orogen illustrates slower relative to Adriatic side. These results are corroborated by an analysis paired thermochronometer samples, which illustrate that have generally increased on but decreased Using updated kinematic model asymmetric orogenic wedge, with imposed a factor 2 side, we demonstrate cooling maximum burial depths able replicate measured estimates depth vitrinite reflectance data. suggest horizontal motion is important component overall rock in asymmetry has existed for at least several million years.