*Michael E Weber¹、Maureen E Raymo²、Victoria L Peck³、Trevor Williams⁴、Osamu Seki⁵、Yuji Kato⁶、Mutsumi Iizuka⁵、 and IODP 382 Scientists (1.Steinmann Institute, University of Bonn, Bonn, Germany、2.Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, USA、3.British Antarctic Survey, Cambridge, UK、4.International Ocean Discovery Program, Texas A&M University, College Station, USA、5.Institute of Low Temperature Science, Hokkaido University, Japan、6.Center for Advanced Marine Core Research, Kochi University, Japan)