PANGAEA_979661 Interstitial water geochemistry results of IODP Hole 386-M0090C Strasser, Michael; Ikehara, Ken; Everest, Jeremy D; Maeda, Lena; Hochmuth, Katharina; Grant, Hannah; Stewart, Margaret S; Sakurai, Noriaki; Yokoyama, Takahiro; Bao, Rui; Bellanova, Piero; Brunet, Morgane; Cai, Zhirong; Cattaneo, Antonio; Hsiung, Kan-Hsi; Huang, Jyh-Jaan Steven; Ishizawa, Tahashi; Itaki, Takuya; Jitsuno, Kana; Johnson, Joel E; Kanamatsu, Toshiya; Keep, Myra; Kioka, Arata; Kölling, Martin; Luo, Min; März, Christian; McHugh, Cecilia M G; Micallef, Aaron; Nagahashi, Yoshitaka; Pandey, Dhananjai K; Proust, Jean-Noël; Rasbury, Troy; Riedinger, Natascha; Satoguchi, Yasufumi; Sawyer, Derek E; Seibert, Chloé; Silver, Maxwell; Straub, Susanne M; Virtasalo, Joonas J; Wang, Yong Hong; Wu, Ting-Wei; Zellers, Sarah D Interstitial water geochemistry results of IODP Hole 386-M0090C 2025-03-19 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.979661 Earth Science Event label Sample code/label Proposed International Geo Sample Number DEPTH, sediment/rock Salinity, porewater Alkalinity, total Ammonium Vanadium Copper Rubidium Molybdenum Uranium Lithium Boron Silicon Manganese Iron Strontium Barium Chlorine Bromine Sulfate geoscientificInformation 386-M0090C Exp386 International Ocean Discovery Program (IODP) IODP Japan Trench JTPC-03B Porewater chemistry Trigger corer DSDP/ODP/IODP sample designation Refractometer, Atago, RX-5000i Titration, Metrohm, 888 Titrando Discrete analyzer for colorimetric analysis, SEAL Analytical, AQ2 Inductively coupled plasma-mass spectroscopy (ICP-MS), Agilent, 7500-ce Inductively coupled plasma-atomic emission spectrometer (ICP-AES), Horiba Jobin Yvon, ULTIMA 2 Ion chromatograph (IC), Metrohm, 882 Compact Kaimei 2021-05-28 2021-05-28 Complete 38.29531667 38.29531667 144.0588 144.0588 0.0 m (DEPTH, sediment/rock) 0.83 m (DEPTH, sediment/rock) IODP Integrated Ocean Drilling Program / International Ocean Discovery Program unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 60 data points text/tab-separated-values Strasser, Michael; Ikehara, Ken; Everest, Jeremy D; IODP Expedition 386 Scientists (2023): Japan Trench Paleoseismology. Proceedings of the International Ocean Discovery Program, International Ocean Discovery Program, 386, https://doi.org/10.14379/iodp.proc.386.2023 QAQC386_Web_F_GC_1_SAM (URI: https://download.pangaea.de/reference/140401/attachments/QAQC386_Web_F_GC_1_SAM.zip) QAQC386_Web_F_GC_2_EPH (URI: https://download.pangaea.de/reference/140402/attachments/QAQC386_Web_F_GC_2_EPH.zip) QAQC386_Web_F_GC_4_IW-ME-TE (URI: https://download.pangaea.de/reference/140403/attachments/QAQC386_Web_F_GC_4_IW-ME-TE.zip) QAQC386_Web_F_GC_5_IW-IC (URI: https://download.pangaea.de/reference/140404/attachments/QAQC386_Web_F_GC_5_IW-IC.zip)

Results of interstitial water (IW) geochemistry analyses from the above given hole of International Ocean Discovery Program (IODP) Expedition 386 (Japan Trench Paleoseismology). The offshore phase of this expedition took place between 2021-04-13 and 2021-06-01 onboard Japanese R/V Kaimei from and to Yokosuka, Japan, followed by an onshore phase onboard D/V Chikyu between 2022-02-14 – 2022-03-15. Sampling for IW geochemistry took place offshore immediately upon core recovery using Rhizon samplers. A total amount of approximately 15 mL IW per sample were extracted from the core sections over a maximum rhizon retention time of 6 hours. IW main samples were subsequently split into as many as seven fractions for the following IODP standard measurements: sulfide (1.5 mL IW + 0.6 mL ZnAc 2.5%), salinity (0.5–1.5 mL), pH and alkalinity (3–4 mL), ammonium (0.5–1.5 mL), cations (3 mL IW + 0.03 mL HNO3), and anions (3 mL). In addition to IW from the core sections, samples of the bottom water (BW) were collected from the top of the trigger core using a Duran bottle and vacuum pump unit connected by tubes. For further methodological information see methods chapter in Strasser, M. et al., 2023 https://doi.org/10.14379/iodp.proc.386.102.2023 ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.979661"! ** Data was submitted and proofread by Vera Barbara Bender, MARUM - Center for Marine Environmental Sciences (University Bremen) on behalf of ECORD Science Operator Data Management (https://www.ecord.org).

https://doi.org/10.14379/iodp.proc.386.2023 Exp386 https://doi.org/10.14379/iodp.proc.386.2023 Japan Trench Paleoseismology https://hdl.handle.net/10013/epic.27914.d001 DSDP/ODP/IODP sample designation https://www.iodp.org/ IODP https://www.jamstec.go.jp/e/about/equipment/ships/kaimei.html Kaimei DIF 9.4 2025-03-19 2026-07-22