Methane and CO2 gas concentrations and stable isotope data from select core samples from UKGEOS Glasgow GGC01 borehole
IDA267644 Methane and CO2 gas concentrations and stable isotope analyses of select core samples from GGC01 borehole of the Glasgow UKGEOS facility. Core samples were collected approximately every 10m depth in gas tight isojars by the BGS. Geochemical gas analyses was carried out at the Scottish Universities Environmental Research Centre (SUERC) and consisted of bulk concentration analysis using gas chromatography; followed by δ13CCH4, δ13CCO2, and δD stable isotope analyses on a methane combustion line (full methods attached). This data was collected to investigate the variability of gas fingerprints with depth within the Glasgow coal mine workings, and unmined Carboniferous coal measures. Samples and data are derived from the UK Geoenergy Observatories Programme funded by the UKRI Natural Environment Research Council and delivered by the British Geological Survey.
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Rock samples consisting of two 50mm quarter sections of core were obtained approximately every 10m depth during drilling of the GGC01 borehole. Two sample storage methods was used to collect samples; with a core sample from each depth being stored in de-ionised water, and the other being stored in nitrogen gas. All samples were then stored at standard temperature (25 C) and pressure (1atm) for a three-month period, to allow the samples to equilibrate with the headspace prior to gas analysis at the Scottish Universities Environmental Research Centre (SUERC). Gas analyses consisted of establishing methane and CO2 concentrations through gas chromatography (full method attached), with select gas samples being analysed for their stable isotope signature (methane combustion line method attached).
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