Abstract
The denudation budget of the Alps is quantified for the main period of lateral extrusion between 22 and 12Ma. The relative importance of tectonic denudation increases from W to E from ∼70% in the Lepontine window in the Swiss Alps to ∼80% in the Tauern window and to more than 95% in the Rechnitz window. The driving mechanism of tectonic denudation was eastward extrusion due to an unconstrained orogenic margin in the Pannonian basin. Tectonic denudation in the Alps was responsible for about 30% of the total exhumation between 22 and 12Ma.
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