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. 2014 Aug 12;15:12. doi: 10.1186/s12932-014-0012-y

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Copyright © 2014 Gilhooly et al.; licensee Chem Central

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Sulfur isotope compositions of pore fluids and free gas samples. (a) Frequency distribution of δ³⁴S values for sulfide (green) and sulfate (blue) collected from Palaeochori Bay, Milos (this study). The vertical solid line is the average of free gas sulfide in Palaeochori Bay (δ³⁴S = 2.5‰) and the width of the line is the standard deviation of all measurements (±0.28‰, n = 4). The dashed vertical line represents seawater sulfate (δ³⁴S = 21.2‰). (b) Frequency distribution of free gas sulfide δ³⁴S at Nisyros Island [30]. Note, the δ³⁴S values for this study (a) were normalized to VCDT and the literature values (b) were referenced to CDT.