Geochronology, geochemistry and isotope systematics of a mafic–intermediate dyke complex in the İstanbul Zone. New constraints on the evolution of the Black Sea in NW Turkey AysalNamık KeskinMehmet PeytchevaIrena DuruOlgun 2017 Supplementary Table 2. Representative chemical composition (wt.%) of pyroxenes from the mafic–intermediate dykes (calculated with using Winpyrox software, Yavuz 2013).