Complex sentence: The major ores are sulphur-bearing sedimentary deposits, formed by the Messinian Salinity Crisis, which evaporites including evaporitic sulphate was deposited in the Central Sicilian Basin.
Split into simpler sentences: The major ores are sulphur-bearing sedimentary deposits. The sulphur ores are formed by the Messinian Salinity Crisis, which evaporites that includes evaporitic sulphate was deposited in the Central Sicilian Basin.