Porewater geochemistry of sediments from ROV push cores during Pourquoi Pas ? cruise INDEX2016, Hydrothermal Vent Outlet in the Kairei Field


Deep-sea sediment samples were taken from the (wider) Kairei hydrothermal field area (25°S, 70°E) as well as a remote site (26°S, 71°E) in the Indian Ocean during the INDEX cruise 2016 with the N/O Pourquoi pas? (Ifremer, France). Push core samples from different areas of the Kairei vent field, as well as a sample from the remote site (~200 km south-east from the Kairei), were recovered with the help of the ROV VICTOR 6000 (Ifremer, France). All subsampling steps were carried out shipboard at 4 °C. Porewater from push cores was extracted with rhizons (CSS, 5 cm Rhizosphere Research Products B.V., Netherlands) at a resolution of 2-3 cm, fixed with 1% HNO3 for trace element analyses and stored at 4 °C. With sterile syringes (nozzles removed) 3 ml of 2 cm layers of sediment were transferred into sterile falcon tubes for DNA extraction and stored at –80 °C. Concentrations of minor and trace elements Li, Al, Rb, Cs, Sr, Ba, V, Mn, Fe, Co, Ni, Cu, Zn, Ag, Cd, Tl, Pb, In, Sn, Sb, Bi, W, Mo, U, Au, As, and L were determined by highresolution ICP-SF-MS (Element XR, Thermo Scientific) after 25-fold dilution and spiking with Y and Re for internal standardization using appropriate mass resolution settings.

Sequence data were deposited in the National Center for Biotechnology Information (NCBI) under the accession number: BioProject PRJNA474182.

DOI https://doi.pangaea.de/10.1594/PANGAEA.928248
Related Identifier https://doi.org/10.1080/01490451.2019.1694107
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.928248
Creator Adam, Nicole; Kriete, Cornelia; Garbe-Schönberg, Carl-Dieter; Gonnella, Giorgio; Krause, Stefan; Schippers, Axel; Kurtz, Stefan; Schwarz-Schampera, Ulrich; Han, Yuchen; Indenbirken, Daniela; Perner, Mirjam
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2021
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 942 data points
Discipline Earth System Research
Spatial Coverage (70.000W, -26.000S, 71.000E, -25.000N); Indian Ocean