Rock Sample Geochemistry, Petrology, and Isotopic Analyses Supporting Geochronological and Thermochronological Modelling

The bulk chemical composition of the hornfels sample (Table S1), the mineral stoichiometric coefficients and the composition of the mass‑balanced reaction R1 (Table S2), the LA‑ICP‑MS U–Pb zircon data from the Gavorrano granite (Table S3), and the apatite (U–Th)/He data from the Gavorrano granite (Table S4) are provided in support of the manuscript “Thermo‑rheological Model for Rapid Magma Cooling and Exhumation: The Pliocene Gavorrano Granite (Northern Apennines, Italy)” by Perrini et al., submitted to JGR–Solid Earth.