Geochemical data and images from discrete samples of Fe-oxyhydroxide and seafloor massive sulphide (SMS) collected during RRS James Cook cruise JC224 (2022)

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Marine Environmental Data & Information Network
Last updated:
23 June 2025
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Not added
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Summary

This dataset comprises images, geochemical composition, isotopic ratio, and X-ray diffraction (XRD) data from samples of Fe-oxyhydroxide (FeOOH) and seafloor massive sulphide (SMS) collected during the RRS James Cook cruise JC224 (March - April 2022) to the 13°30' N ocean core complex (OCC) region of the Mid-Atlantic Ridge, also known as the Semenov Hydrothermal Field. A total of 23 Robotic Underwater Vehicle (RUV) dives were completed with the HyBIS RUV (Murton et al., 2012) in addition to 6 rock dredges setup with a chain bag dredge and a steel bucket dredge behind it. Sampling was focused on the previously described massive sulphide-hosting areas: Semenov-1, -2, -4 and -5 (Escartin et al., 2017), as well as one dedicated dive to a near-circular feature protruding on the southern slope of the OCC - termed the "bulge". Analysis of the 42 FeOOH and SMS samples occurred onshore at the National Oceanography Centre (NOC) and the University of Southampton and the samples are held for long-term storage at NOC Southampton and Cardiff University. A range of analytical methods were used to collect the data, including: inductively-coupled plasma mass spectrometry (ICP-MS), inductively coupled plasma optical emission spectroscopy (ICP-OES), X-ray diffraction (XRD), and reflective light microphotography. The key aims of these analyses were: (1) to improve understanding regarding the formation of Fe-oxyhydroxide samples at SMS systems, and (2) to determine the potential of Fe-oxyhydroxide as an additional resource at SMS systems. The data were collected as part of a PhD project funded under the Natural Environment Research Council (NERC) project Ultramafic-hosted mineral Resource Assessment (ULTRA) grant, NE/S004068/1. This collection consists only of the data collected under the PhD project and not all data associated with the ULTRA project.

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Link to the data Format File added Data preview
Published dataset - doi:10.5285/2e0a9d33-56f6-622d-e063-7086abc06e59 N/A 23 June 2025 Not available
Published dataset - doi:10.5285/2e0aa2c7-6331-62b9-e063-7086abc06891 N/A 23 June 2025 Not available

Additional information

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Added to data.gov.uk
2025-06-05
Access contraints
Data are freely available to all following agreement to the terms and conditions of a Data Licence
Harvest GUID
f5eb7eeb16d75199985993da19119d6a
Extent
Latitude: 13.5154° to °
Longitude: -44.9909° to -44.8839°
Spatial reference system
Dataset reference date
2025-03-26 (publication)
2025-02-13 (creation)
2025-02-25 (revision)
Frequency of update
asNeeded
Responsible party
British Oceanographic Data Centre (owner, originator, custodian, distributor)
ISO 19139 resource type
dataset
Metadata language
eng
Source Metadata
XML
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