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Carbon Isotopic Signatures of Microbial Lipids in Geothermal Deposits: Elucidating Thermophilic Ecology. Lipid biomarkers were extracted and fractionated using standard methods. They were analysed via GC-MS for identification and determination of lipid distributions and abundances, and via GC-C-IRMS for carbon isotopic compositions. These methods, except for GC-IRMS, are available in in Kaur et al. (2014) DOI: 10.1007/s00792-014-0719-9. GC-IRMS methods are the same as those used in Badger et al. (2013) DOI: 10.1098/rsta.2013.0094 Sinters were collected from six active geothermal systems in the Taupo Volcanic Zone, North Island, New Zealand. Champagne Pool is located in the Waiotapu geothermal system. Opaheke Pool is located in the Reporoa Caldera situated approximately 6 km south of the Waiotapu geothermal field. These two fields are believed to be hydrologically linked (Nairn et al., 1994). Loop Road hot springs are situated in a flat, low-lying alluvial plain, a few kilometres south of Waiotapu. The Orakei Korako geothermal region is approximately 2 km2 in area and is located on the eastern margin of the Moroa Volcanic Centre. OK1 was sampled from the edge of Fred and Maggie Pool, whilst OK2 and OK3 were sampled from the outflow channel; OK1D originates from Diamond Geyser. The Sinter Flat area of Rotokawa is a cluster of geothermal springs on the northern margin of Lake Rotokawa that have created a flat terrace, mostly covered in hot pools. Further details of these sites are available in Kaur et al. (2014) DOI: 10.1007/s00792-014-0719-9.
Analysed trace element data and radiocarbon data from five existing marine sediment cores from the NE Pacific margin (45-50N) that intersects the major water masses of the N Pacific, from a depth transect (700-3300m)
Palynofacies, microcharcoal, clay mineralogical and carbon isotope mass spectrometry measurements from the Late Pliensbachian (934 – 918 mbs) of the Mochras core, Cardigan Bay Basin, NW Wales, UK. Data description: This dataset of the Mochras borehole contains palynofacies, microcharcoal, clay mineralogical data, bulk organic carbon-isotopes, TOC and CaCO3 data from the interval 934 – 918 mbs. This dataset extents the previously published dataset (951 – 934 mbs) deposited at: https://doi.org/10.5285/d6b7c567-49f0-44c7-a94c-e82fa17ff98e and discussed in the published paper by Hollaar et al. (2021) https://doi.org/10.1038/s43247-021-00307-3. The dataset is also linked to the XRF dataset https://doi.org/10.5285/c09e9908-6a21-43a8-bc5a-944f9eb8b97e Damaschke et al. (2021) which also covers the study interval of the here deposited dataset of the Mochras core. This dataset covers part of the Upper Margaritatus Zone in the Mochras core and covers the onset of the Late Pliensbachian positive carbon-isotope excursion. This data was collected, interpreted and analysed by Teuntje Hollaar, Claire Belcher, Stephen Hesselbo, and Jean-Fran?ois Deconinck. The dataset was created within the scope of the JET project (Integrated understanding of Early Jurassic Earth system and timescale) - https://gtr.ukri.org/projects?ref=NE%2FN018508%2F1. This project has received funding from the International Continental Scientific Drilling Programme (ICDP) and the UK Natural Environment Research Council (NERC).
Organic carbon and bulk nitrogen isotope data for black shale samples from six different drill cores with varying distance from the major Zn ore body (HYC) in the McArthur basin. Data show trends with distance in d15N and C/N ratios. A more detailed interpretation is provided in Stüeken, E.E., Gregory, D.D., Mukherjee, I. and McGoldrick, P., 2021. Sedimentary exhalative venting of bioavailable nitrogen into the early ocean. Earth and Planetary Science Letters, 565, p.116963.
Organic carbon and bulk nitrogen isotope and abundance data and metal abundance data from the Mesoarchean VMS deposit and associated strata. Detailed information is given in Stueeken, E.E., Boocock, T.J., Robinson, A., Mikhail, S. and Johnson, B.W., 2021. Hydrothermal recycling of sedimentary ammonium into oceanic crust and the Archean ocean at 3.24 Ga. Geology, 49(7), pp.822-826.
These data were collected to study oxidative weathering processes in the Waiapu River catchment, New Zealand, with potential carbon release sourced from the oxidation of petrogenic organic carbon or carbonate dissolution coupled to the oxidation of sulfide minerals. There, in mudstones exposed in a highly erosive gully complex, in situ CO2 emissions were measured with drilled gas accumulation chambers following the design by Soulet et al. (2018, Biogeosciences 15, 4087-4102, https://doi.org/10.5194/bg-15-4087-2018). Temporal and spatial variability in CO2 flux can be put in context with environmental changes (e.g., temperature and hydrology). For this, CO2 release from 5 different chambers, which were installed over a transect of ~ 10 m length in a gully above a nearby streambed, was measured several times over a short study period (circa one week). In addition, the gaseous CO2 storage (partial pressure) in the shallow weathering zone was measured prior to a CO2 flux measurement. To understand the source of CO2, gas samples were collected and their stable and radioactive carbon isotope compositions determined. In this process, we identified a contaminant, which was associated with the chamber installation, that can be traced in the gas samples that were collected within 4 days following the installation. Details of the subsequent data analysis and interpretation can be found in: Roylands et al. 2022, Chemical Geology: Capturing the short-term variability of carbon dioxide emissions from sedimentary rock weathering in a remote mountainous catchment, New Zealand. This work was supported by the European Research Council (Starting Grant to Robert G. Hilton, ROC-CO2 project, grant 678779).
Organic carbon and nitrogen and bulk nitrogen isotope data and metal abundance data for siltstones and shales of the Mesoproterozoic Diabaig Formation. For a detailed description and interpretation, see Stüeken, E.E. and Prave, A.R., 2022. Diagenetic nutrient supplies to the Proterozoic biosphere archived in divergent nitrogen isotopic ratios between kerogen and silicate minerals. Geobiology.
Organic carbon and total nitrogen isotope data for black shales and U-Pb data for apatite solutes from the Burzyan and Yurmatau groups in the Urals, Russia. For detailed discussion see Stüeken, E.E., Kuznetsov, A.B., Vasilyeva, I.M., Krupenin, M.T. and Bekker, A., 2021. Transient deep-water oxygenation recorded by rare Mesoproterozoic phosphorites, South Urals. Precambrian Research, 360, p.106242.
Organic carbon, total nitrogen, total reduced sulfur and carbonate-associated sulfur isotopes measured on decarbonated stromatolite samples from the Paranoa Group (1.1 Ga).
Data collected as part of the NERC funded Radioactivity and the Environment (RATE), Long-lived Radionuclides in the Surface Environment (Lo-RISE), research consortium.This data comes from the marine workstream group based at the Scottish Universities Environmental Research Centre (SUERC) and the Scottish Association for Marine Science (SAMS). The data consists of radionuclide measurements of environmental and biological samples including radiocarbon, caesium (137), americium (241) and plutonium (238, 239, 240).The data has been published in the following publications: Tierney et al., 2018. Modelling Marine Trophic Transfer of Radiocarbon (14C) from a Nuclear Facility. Ecosystem Modelling and Software 102, 138-154. Tierney et al., 2017. Nuclear Reprocessing-Related Radiocarbon (14C) Uptake into UK Marine Mammals. Marine Pollution Bulletin 124, 43-50. Muir et al., 2017. Ecosystem Uptake and Transfer of Sellafield-Derived Radiocarbon (14C). Part 1: The Irish Sea. Marine Pollution Bulletin 114, 792-804. Tierney et al., 2017. Ecosystem Uptake and Transfer of Sellafield-Derived Radiocarbon (14C). Part 2: The West of Scotland. Marine Pollution Bulletin 115, 57-66 Tierney et al., 2016. Accumulation of Sellafield-derived 14C in Irish Sea and West of Scotland Intertidal Shells and Sediments. Journal of Environmental Radioactivity 151, 321-327.