Carte non disponible
Date/heure
Date(s) - 17 septembre 2024
11 h 00 min - 12 h 00 min
Catégories
Unraveling Sediment Transport and Relief Evolution: insights from Luminescence Dating and Thermochronology
Recent advances in dating methods have improved our ability to constrain the processes shaping the Earth’s surface. I will present two distinct research projects on this topic: the first on luminescence dating of englacial clasts, and the second on thermochronological dating of canyon incision.
Understanding sediment transport in glacierized catchments is key to studying glacier dynamics and landscape evolution. However, directly observing glacial sediment transport is difficult. I will introduce a new approach that combines luminescence rock surface burial dating with a glacier model to trace sediment transport histories through Miage Glacier in the Italian Alps.
Resolving the timing of canyon incision remains challenging with existing geochronological techniques. The limited exhumation complicates the interpretation of low-temperature thermochronology data. The Colorado Plateau is characterized by a low-relief, high-altitude surface that is dissected by canyons. Previous studies constraining the timing of canyon incision have mostly focused on the Grand Canyon due to its outstanding incision. I will show how a high geothermal gradient region helps investigate a less incised canyon with low-temperature thermochronology.