The morphotectonic evolution of the Albanian Dinarides: new insights from the application of in situ and meteoric Be cosmogenic nuclides

• DOI: 10.5194/egusphere-egu24-433
• Publication Date: 2024-03-08T09:25:42Z
• Authors: Chiara Bazzucchi; Silvia Crosetto; Hella Wittmann; Paolo Ballato; Claudio Faccenna; Bardhyl Muceku; Francesca Rossetti
• Keywords: Cosmogenic nuclide

The Albanian Dinarides represent the central segment of Dinarides–Hellenides orogenic belt. sector is strategically located at boundary between continental subduction to north and oceanic south, making it an ideal setting explore interplay surface deep geological processes. Furthermore, modern seismicity (e.g. 1979, Mw 7.1 Montenegro, 2019, 6.4 Durres earthquakes) geomorphic features indicate ongoing tectonic activity least since late Quaternary. In this study, we landscape response tectonics climate by 1) conducting extensive analysis including knickpoint extraction, ksn chi analysis, longitudinal river profile projection, mapping such as windgaps, terraces, pediment surfaces uplifted relict landscapes, 2) estimating basin-wide denudation rates using cosmogenic nuclides.Specifically, collected sediment samples from more than 20 rivers draining all units determined classic in situ 10Be technique for catchments quartz-bearing lithologies, new meteoric 10Be/9Be carbonate ophiolite settings where quartz-poor lithologies predominate. a few cases, used both techniques on same inter-method comparison. The highlights presence non-lithological knickpoints, landscapes wind gaps suggesting recent regional local scales. This led reshaping network with changes hydraulic connectivity sea level that altered transport directions. Quaternary climatic variations appear play crucial role erosive power controlling cycles aggradation incision.Denudation show spatial variability, ranging less 0.3 mm/yr 0.9 siliciclastic predominate, over 1 part Albania, rocks ophiolites are widely exposed. Although present good correlation metrics (e.g., hillslope), observed variability appears be influenced processes associated active normal faults salt diapirism. Overall, obtained two Be consistent align published incision derived terrace dating, coupling fluvial hillslope last thousands years. consistency methods validates high future potential quantifying dominated non-quartz lithologies.