S and O isotope composition of the Badenian (Middle Miocene) sulphates in the Carpathian Foredeep - Halas, Stanisłav; Jasionowski, Marek; Karoli, Stanislav; Peryt, Danuta; Peryt, Tadeusz Marek; Poberezhskyy, Andriy; Szaran, Janina; Wójtowicz, Artur