[MZZ57-P04] Formation process of different types of manganese nodules collected on seamounts in the Northeast Pacific
Keywords:Mn nodule, µ-focus X-ray CT, 10Be, Northeast Pacific
As a result, (1) In the sample with thin coating produced from the surface of the seafloor, the part formed in seawater from the buried surface of the sediment is thicker and layered, and the part formed in the sediment is thinner than seawater and sponge. And the layer thickness ratio was about 2: 1. (2) Correlation of element concentration was clear in the part formed in seawater, and that in sediment was unclear. (3) The growth rate was almost constant in seawater and not constant in sediments. From the above results, it was found that there is a difference between the element concentration distribution and the growth rate in seawater, which is an oxidative environment, and in sediment, which is a reductive environment. It was suggested that it affected the collection.