Fe isotopic values of Fe-Mn crust layers from Northwind Ridge (NR), Mendeleev Ridge (MR), Knipovich Ridge (KR), Vøring Spur (VS)

This dataset contains δ⁵⁶Fe values of the four Fe–Mn crusts from different locations in the Arctic Ocean: NR (DR5-D-C, 8.5 Ma) from the Northwind Ridge, collected from 3851 m water depth during cruise HLY 1202 (Hein et al., 2017; Konstantinova et al., 2025); MR (KD12-03-09, 6.4 Ma) from the Mendeleev Ridge, collected at 2770–2200 m water depth during cruise Arktika 2012 (Konstantinova et al., 2017, 2018, 2020, 2025); KR (S25/62/1, 5.7 Ma) from the southern Knipovich Ridge, recovered at 1650–1300 m during the 25th cruise of RV Akademik Nikolai Strakhov (Dubinin et al., 2022); and VS (13C-ROV-12-1-1, 7.2 Ma) from the Vøring Spur, collected at 3557 m during a joint UiB/NPD-2013 cruise. Detailed information on the locations, mineralogy, and chemical compositions of these samples is provided in Konstantinova et al. (2025). Iron isotope ratios were measured using a multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS; Neptune Plus, Thermo Fisher Scientific, Germany) by the 57Fe-58Fe double spike method according to Kurisu et al. (2024).

本数据集收录了北冰洋不同海域4个铁锰结壳的δ⁵⁶Fe同位素数据：采自诺思伍德海岭（Northwind Ridge）的NR样品（编号DR5-D-C，形成年龄8.5 Ma），于HLY 1202航次中在3851米水深采集（Hein等，2017；Konstantinova等，2025）；采自门捷列夫海岭（Mendeleev Ridge）的MR样品（编号KD12-03-09，形成年龄6.4 Ma），于Arktika 2012航次中在2770~2200米水深采集（Konstantinova等，2017、2018、2020、2025）；采自克尼普海岭南部（southern Knipovich Ridge）的KR样品（编号S25/62/1，形成年龄5.7 Ma），由“尼古拉·斯特拉霍夫院士”号考察船（RV Akademik Nikolai Strakhov）第25航次在1650~1300米水深回收（Dubinin等，2022）；采自沃灵格海脊（Vøring Spur）的VS样品（编号13C-ROV-12-1-1，形成年龄7.2 Ma），于UiB/NPD-2013联合航次中在3557米水深采集。上述样品的站位信息、矿物学特征及化学成分的详细资料详见Konstantinova等（2025）。铁同位素比值采用多接收器电感耦合等离子体质谱仪（multi-collector inductively coupled plasma mass spectrometer，简称MC-ICP-MS；型号Neptune Plus，赛默飞世尔科技，德国），通过57Fe-58Fe双稀释剂法，参照Kurisu等（2024）的方法完成测定。