In the Western Tauern Window, Zillertal Alps (Austria/Italy), metasediments of a Mesozoic intra-montane basin ("Pfitsch-Mörchner basin"; Veselá and Lammerer, 2008) are exposed. The (me-ta)sediments were deposited on a Variscan basement, which comprises different types of meta-granitoids and their (Pre)-Variscan metamorphic country rocks. The chemical composition (major and trace elements) of these rocks is presented for 205 samples. In the metasediments (103 samples), we distinguish the following units (from base to top): metaconglomerate (14 samples) – mica schist (19) – carbonate-mica schist (9) – tourmaline gneiss (35) – lazulite quartzite (25) – marble (1). In the basement to the NW of the basin, we distinguish two different types of orthogneiss (both Zentralgneis of the Tux unit, in the local nomenclature two varieties Augenflasergneis and Schrammacher gneiss; 32 samples) and the roof pendant of these gneisses with serpentinite (10 samples), amphibolite, and paragneiss (no analyses presented).
In the SE of the basin we distinguish orthogneiss from the Zillertal branch of the Zentralgneis (7 samples), biotite-chlorite-plagioclase gneiss (9 samples), amphibolite, and (Pre-)Variscan graphitic micaschist with the local name Furtschagl schist (no analyses presented), and at the base of the basin sediments a schistose pyrite quartzite (31) with lenses of magnetite-chloritoide-staurolite-chlorite rich rocks (13 samples MCSC-lenses, interpreted as paleosol, Barrientos and Selverstone, 1987). From a subset of these samples (23 samples), rare earth elements were determined, and from another subset of 25 samples 11B/10B boron isotope ratios and whole rock B-contents. This extends a previously published data set of B isotope ratios in tourmaline from the metasedimen-tary unit (Berryman et al. 2017). For a test of stratigraphic correlation, typical rocks from the meta-conglomerate, the carbonate-mica schist, lazulite quartzite, and marble (one sample each) were analyzed for 87Sr/86Sr isotope ratios.
Raman spectroscopy of carbonaceous matter (RSCM) is commonly used to derive metamorphic peak- temperature estimates of metasedimentary rocks. This thermometry method exploits that the degree of graphitization of carbonateous matter (CM), which is measured via Raman spectroscopy, increases with metamorphic temperature. This dataset provides the raw data of RSCM, spectrum fitting results and calculated peak temperatures of more than 100 samples from the central Tauern Window. We used this data to constrain the distribution of metamorphic peak temperatures in this area.
Raman analysis was performed on polished thin and thick sections. We exclusively measured grains of CM that were enclosed in translucent minerals (quartz, white mica, chlorite, carbonates, chloritoid, garnet) and therefore not exposed on the section surface, in order to avoid destruction of the CM during the sample preparation process. Raman spectra were acquired in the first-order region of graphite (ca. 1000-1900 cm^-1). Further details on the analytical setup, spectrum fitting and temperature calculation are provided in the following sections. The data is distributed in the form of simple text files and raster images.