Abstract
Waters discharging from carbonated cold mineral springs in the central Victorian Highlands of Australia have δ2H and δ18O values of −45 to −35‰ and −8 to −5.5‰, respectively, that suggest that they were derived from local meteoric water recharged under cooler climatic conditions than present. δ13C values of entrained CO2 (−10.4 to −7.0‰) and dissolved inorganic carbon (−3.9 to −0.1‰) imply that the C was probably derived from outgassing of Recent igneous rocks within the Newer Volcanic Province. The waters lie to the left of both local and global meteoric water lines due to CO2 exsolution from waters that were never involved in high-temperature water–rock interaction.
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