Geochemical Analysis as a Complementary Tool to Estimate the Uplift of Sediments Caused by Shallow Gas Hydrates in Mounds at the Seafloor of Joetsu Basin, Eastern Margin of the Japan Sea

Figure 11

Crossplots of TOC/TN versus TS/TOC (a), TOC versus TIC (b), TOC versus TS (c), TOC/TN versus Δ¹³C_org (d) and TOC versus 𝛿¹³C_org. All parameters suggest a mixture of both Holocene and LGM geochemical signatures on the top of mounds, indicating an uplift of deeper sediments related to the formation of mounds.

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