The data set comprises new thermochronologic data along the TRANSALP geophysical transect in the Eastern Alps, i.e. (i) apatite and (ii) zircon (U-Th)/He measurements (Tables S1, S2 and S3), and (iii) HeFTy inverse thermal time-temperature-path models ('HeFTy_Models.zip') including a table of parameters used (Table S4). Individual model files can be opened using the HeFTy software (Ketcham et al., 2007).

Sampling method
Bedrock samples were taken along the TRANSALP geophysical transect (e.g., Lüschen et al., 2004; 2006) with the main purpose of relating new (and existing) thermochronological data to previously identified mantle geometries and to gain orogen-scale insights into the evolution of the eastern European Alps since initialization of collision in the Eocene/Oligocene. Apatite and zircon (U-Th)/He analyses were the method of choice for two reasons: (i) these systems are considered most suitable to detect periods and locations of increased exhumation that are related to the Neogene evolution of the European Alps including changes in mantle geometries, and (ii) these systems systematically complement existing thermochronology data along the transect, which are predominantly comprised of fission-track data. Detailed analytical procedure is described in the dateset description file ("2020-48_Eizenhöfer-et-al_Data Description.pdf").