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 4

Map of Umitaka Spur. Red stars represent giant plumes and methane hydrate exposed at the seafloor. Red squares indicate detailed images of next figure. Mounds and pockmarks are indicated. See Figure 1 for Figure 4 location.