This data pack contains processed data from straddle packer pump testing of TH0424 ground investigation borehole at the UK Geonergy Observatory at Thornton Science Park, Cheshire during October 2022. TH0424 (BGS borehole reference NG47NW249) is located at NGR Easting: 344965 Northing: 375857 and drilled to a depth of 101.14 mbgl. Full meta data for the test borehole is included in the borehole information pack (https://doi.org/10.5285/badff3b9-8bc8-4897-b324-7f4653fdd214). This dataset is accompanied by BGS open report OR/23/037 (https://nora.nerc.ac.uk/id/eprint/536445/) which provides context, description, and analysis of the data. Data sets included in this data pack: 1) Groundwater level data as measured by downhole transducers in the isolated packer intervals and outside packer intervals for 20 pump tests at various target depths/zones. Level data includes raw level readings as well as barometric pressure readings at surface and barometrically compensated level data. 2) Pump flow rate data during pump tests 3) Event logs including timestamped events such as packer inflation, pump deployment etc. 4) Hydrochemical data from on-site parameter measurements and analysed groundwater samples collected during constant rate pump tests. 5) Coring/drilling log of TH0410 with timestamped coring progress during the pump testing period. This dataset is included as activities at TH0410 during testing are thought to have significantly impacted data quality. 6) Logged abstraction events from the Thornton Science Park abstraction borehole (Borehole reference SJ47NW25, NGR 344950 375500, ~350m south of TH0424) by means of a pressure transducer attached to the borehole headworks. This dataset is included as abstraction of the TSP borehole is known to drawdown groundwater levels in TH0424.

The borehole information pack from borehole TH0420 at the UK GeoEnergy Observatories (UKGEOS) Cheshire facility. This release from the British Geological Survey (BGS) contains a borehole schematic, borehole metadata, a report from the drilling contractors, geophysical wireline logs, metadata relating to the multilevel sampling installation and an index to samples collected from the borehole, which are archived in the National Geological Repository at BGS Keyworth. No core scanning data is available for this borehole but the core has been refrigerated in sealed liners for future sampling.

The initial borehole information pack from the TH0424 Ground Investigation Borehole drilled as part of the UK Geoenergy Observatories (UKGEOS) Cheshire facility. TH0424 was drilled to TD of 101 m between the 08-Nov-2021 and 30-Nov-2021. Drill core was collected from 2 m – 101 mm with 100 mm diameter. This initial data release pack from BGS contains composite and digital wireline logs alongside daily driller's borehole records. This information pack also contains the Initial Core Scan dataset from the BGS Core Scanning Facility (https://doi.org/10.5285/b06d44e6-324d-4e19-bf78-a4520b9b87c8).

The borehole information pack from borehole TH0410 at the UK GeoEnergy Observatories (UKGEOS) Cheshire facility. This release from the British Geological Survey (BGS) contains a borehole schematic, borehole metadata, a report from the drilling contractors, geophysical wireline logs, and an index to samples collected from the borehole, which are archived in the National Geological Repository at BGS Keyworth. No core scanning data is available for this borehole and the core has been disposed of.

This data pack contains information from geotechnical and contaminated land investigations carried out at potential sites for the development of the UK Geoenergy Observatory in Cheshire. Following these investigations, a decision was made to move the proposed observatory to Thornton Science Park. None of the sites discussed in this data pack are in scope for development as part of the Cheshire Observatory. In total 16 holes were drilled using a variety of techniques. The only hole to be drilled using rotary coring was BHA-101. This borehole was cored extensively and logged with wireline geophysical tools. As such this is the main focus of the data pack. BHA-101 was drilled to TD of 121.2 m between 19-Nov-2020 and 09-Dec-2020. Drill core was collected from 51 m – 121 mm with 100 mm diameter. This initial data release pack from BGS contains composite and digital wireline logs alongside daily driller's borehole records.

IDA272269 Methane and CO2 gas concentrations and stable isotope analyses of cutting samples from GGA05 and GGA08 boreholes of the Glasgow UKGEOS facility. Cutting samples were collected approximately every 3m 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.

An additional core scanning dataset from the TH0424 drill core that was drilled onshore at Thornton Science Park, Cheshire, UK as part of the UK Geoenergy Observatories (UKGEOS) Cheshire ground investigation funded by UKRI/NERC. The approximately 100 m long core succession comprises the Sherwood Sandstone Group. This additional core scanning dataset pack contains high-resolution optical images and X-ray fluorescence (XRF) downcore point measurements obtained using a Geotek Core Workstation (MSCL-XYZ) at the Core Scanning Facility (CSF) at the British Geological Survey (BGS).

The final borehole information pack from the TH0424 Ground Investigation Borehole drilled as part of the UK Geoenergy Observatories (UKGEOS) Cheshire facility. TH0424 was drilled to TD of 101 m between the 08-Nov-2021 and 30 Nov-2021. Drill core was collected from 2 m – 101 m with 100 mm diameter. This final data release pack from BGS contains composite and digital wireline logs alongside daily driller's borehole records, sedimentary and discontinuity logging and core analysis data. This information pack also contains the Initial and additional Core Scanning datasets from the BGS Core Scanning Facility (https://doi.org/10.5285/b06d44e6-324d-4e19-bf78-a4520b9b87c8 and https://doi.org/10.5285/381e9664-0f43-4e4c-90ae-1b16ba83681b).

A core scanning dataset from the BHA-101 drill core that was drilled onshore at the Ince Marshes site near the village of Elton, Cheshire, UK as part of the UK Geoenergy Observatories (UKGEOS) Cheshire ground investigation funded by UKRI/NERC. This core scanning dataset pack contains high-resolution optical and radiographic images, X-ray fluorescence (XRF) and physical property downcore point measurements on core from 71.12 m to 121.1 m (Sherwood Sandstone Group) obtained at the Core Scanning Facility (CSF) at the British Geological Survey (BGS).

The borehole information pack from borehole TH0419 at the UK GeoEnergy Observatories (UKGEOS) Cheshire facility. This release from the British Geological Survey (BGS) contains a borehole schematic, borehole metadata, a report from the drilling contractors, geophysical wireline logs, metadata relating to the electrical resistivity tomography (ERT) installation and an index to samples collected from the borehole, which are archived in the National Geological Repository at BGS Keyworth. No core scanning data is available for this borehole and the core has been disposed of.