Sr isotope ratios of Mn nodules collected around Minamitorishima Island, western North Pacific Ocean

We measured Sr isotope ratios of Mn nodule samples collected in the pelagic area around Minamitorishima Island, the western North Pacific Ocean, as the representative data of Mn-oxides, which is an endmember component in the deep-sea sediments. The Mn nodules were collected by the submersible SHINKAI 6500 during dives 6K#1463 and 6K#1465 of YK16-01 cruise by R/V Yokosuka, in 2016. The Mn nodules in this area consist of three layers, L0, L1, and L2, which were identified by Machida et al. (2016, Geochemical Journal). For this dataset, we subsampled from five points in 6K#1463 N2-007 (one subsample from L0, two from L1, and two from L2) and from three points in 6K#1465 N4-003 (one subsample each from L0, L1, and L2).本数据集以西北太平洋南鸟岛（Minamitorishima Island）周边远洋区域采集的锰结核（Mn nodule）样品为研究对象，测定其锶同位素比值（Sr isotope ratios），作为深海沉积物中端元组分氧化锰矿物（Mn-oxides）的代表性数据。2016年，搭载“横须贺”号（R/V Yokosuka）的YK16-01科考航次中，科研人员通过载人潜水器“深海6500”（SHINKAI 6500）完成6K#1463与6K#1465两次下潜，采集了本研究涉及的锰结核样品。该区域的锰结核可分为L0、L1、L2三层，该分层方案由Machida等人于2016年发表于《地球化学杂志（Geochemical Journal）》的研究中确定。针对本数据集，科研人员从6K#1463航次的N2-007站位采集5个分样：L0层1个、L1层2个、L2层2个；同时从6K#1465航次的N4-003站位采集3个分样，L0、L1、L2层各1个。