Observation of manganese deposits on Kaikata Seamount, Izu-Ogasawara (Bonin) Arc by the Shikai 2000 submersible, supplement to: Usui, Akira; Nishimura, Akira (1992): Submersible observations of hydrothermal manganese deposits on the Kaikata Seamount, Izu-Ogasawara (Bonin) Arc. Marine Geology, 106(3-4), 203-216

Akira Usui & Akira Nishimura
During Dive 408 of Shinkai 2000 on the flank of the Kaikata Seamount located on the volcanic front of the Izu-Ogasawara (Bonin) Arc, possibly recent hydrothermal manganese deposits were observed on sandy volcanic sediments at water depths of between 800 and 1200 m. The deposits cover almost the entire surface sediment across the manganese belt on the northwestern flank on the seamount on a scale of kilometers. The occurrence of the deposits, seafloor morphology and...
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