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. 2018 Jun 13;4(6):eaao4631. doi: 10.1126/sciadv.aao4631

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Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 2 — Vertical profile of Cl⁻ (A), δ¹⁸O (B), and δD (C) of pore water in sediments. Circle and square plots represent pore water sample and water from dissociated gas hydrate fragment, respectively. Dashed line represents the averaged isotopic value of methane hydrates, and blue-filled range denotes original δ¹⁸O and δD values of pore water before the formation of methane hydrates.

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