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Nitrogen isotope and abundance data from brine seeps in the Gulf of Mexico

Dataset title Nitrogen isotope and abundance data from brine seeps in the Gulf of Mexico
Dataset creators Eva Stueeken, University of St Andrews
Annabel Long, University of St Andrews
Nathan Rochelle-Bates, University of St Andrews
Andreas Teske, University of North Carolina at Chapel Hill
Dataset theme Geoscientific Information
Dataset abstract

Nitrogen isotope and abundance data from brine seeps in the Gulf of Mexico.

Three data tables show (1) Electrical Conductivity data for three sediment cores, (2) carbon and nitrogen data from all sediment cores investigated in this study, and (3) ammonium concentrations and isotopic data from brine pool samples.

The results show high enrichments of ammonium in the brines, indicating that the brines actively mobilize bioavailable nitrogen back into the water column. Isotopic data reveal evidence of dissimilatory nitrate reduction to ammonium at the brine-seawater interface. Brine seeps have long been implicated in the formation of sediment-hosted hydrothermal ore deposits. Our results support the notion that brines may have stimulated biological productivity, facilitating trapping of metals in brine seep environments.
Dataset content dates 01/06/2023 to 29/03/2024
Dataset spatial coverage Samples were collected offshore from:
  • the Orca Basin and surroundings
    27°00' N 91°16.99' W
    26°54.48' N 91°20.09' W
    26°56.29' N 91°17.16' W
    26°56.293' N 91°17.163' W
  • near Dead Crab Lake
    27°42.10' N 90°38.91' W
    27°42.09 ' N 90°38.87' W
Dataset supply format MS Excel
Dataset language English-United Kingdom
Dataset discovery metadata record Discovery Link to the dataset's BGS Discovery Metadata record
Dataset publisher NERC EDS National Geoscience Data Centre
Dataset publication date 13/04/2024
Dataset digital object identifier (DOI) 10.5285/39988664-4361-4bee-a4ad-3f40931890c6
Dataset citation text Stueeken, E., Long, A., Rochelle-Bates, N., Teske, A. (2024). Nitrogen isotope and abundance data from brine seeps in the Gulf of Mexico. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/39988664-4361-4bee-a4ad-3f40931890c6
Constraints and terms of use This data set is available under Open Government Licence, subject to the following acknowledgement accompanying any reproduced materials: "Contains data supplied by permission of the Natural Environment Research Council [YEAR]".
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