Resistivity Borehole imaging (FMI, CMI) derived interpretation of bedding, discontinuities (“fractures”) and related stress derived deformation feature borehole breakouts from two wells. Becconsall 1Z (BGS SOBI registration number: SD24SW/11) Grange Hill 1Z (BGS SOBI registration number : SD33NE/27)

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.

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.

The borehole information pack from borehole GGA02, site 01 of the UK Geoenergy Observatories (UKGEOS) Glasgow facility. This release from the British Geological Survey (BGS) contains BGS and Drillers’ logs, cased hole wireline data, details on fibre-optic cable installation, a listing of archived rock chips and a descriptive report. The borehole was drilled between 17th June and 20th September 2019 (start of drilling to casing installation date) to 94.16 m drilled depth as a mine water characterisation and monitoring borehole. Unfortunately, during the final stages of construction grout entered inside the casing, the casing was damaged and the borehole is now available as a sensor testing borehole to 67.2 m. The cased borehole was wireline logged in January 2020. Rock chip samples were taken during the drilling process and have been archived at the National Geological Repository at BGS Keyworth. Further details can be found in the accompanying report http://nora.nerc.ac.uk/id/eprint/528076 DOI https://dx.doi.org/10.5285/189dac62-b720-4fde-8260-f129fb9b0233

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.

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.

[This metadata record has been superseded, see http://data.bgs.ac.uk/id/dataHolding/13480158] The Geophysical Borehole Log index provides details of all digital geophysical logs available to BGS. The database provides the borehole metadata related to logging and metadata for the logging itself and log data stored in a proprietary hierarchical database system (PETRIS RECALL). Contains most digital geophysically logged bores known to BGS National Geological Records Centre. Scattered distribution of boreholes, locally dense coverage, relatively few logs from Scotland & Central Wales, increasing data density on UK continental Shelf.

The borehole information pack from borehole GGC01, site 10 of the UK Geoenergy Observatories (UKGEOS) Glasgow facility. This final data release pack from BGS contains geophysical (MSCL-S), Near Infrared (NIR) and X-ray Fluorescence (XRF; mineralogical and chemical) core scan and core-wireline depth integration data, in addition to sedimentology, discontinuity and engineering logs, core scan optical and X-ray images, composite and digital wireline logs, drillers' summary logs and prognosis, sample recovery information spreadsheets and daily drillers' borehole records that were contained within the now-superseded intermediate data release. The cored, seismic monitoring borehole was drilled between 19 November and 12 December 2018 to 199m producing a core of 102 mm diameter. The borehole was wireline logged in December 2018 and a string of 5 seismometers were installed in February 2019. A range of fluid, water and core samples were taken during the drilling process. The borehole information pack- final release contains a range of logs on the core as well as images and scans of that core, these data were acquired in the first half of 2019 and late 2020/early 2021. The final data release for GGC01 includes: 1. UKGEOSGlasgow_GGC01_Final.zip file that includes the majority of the various data files, including files from the intermediate and initial data packs. 2. UKGEOSGlasgowGGC01_slabbedhighresimages.zip that contains the slabbed core optical images, 51GB in size. 3. Intermediate Borehole Information Pack - Part Two, high resolution whole core optical and radiographic images https://doi.org/10.5285/0b49f25b-a5d6-401c-98ff-397ad9ee9ed1 71GB in size, already released. Further details and model limitations can be found in the accompanying report http://nora.nerc.ac.uk/id/eprint/530762

The borehole information pack from borehole GGA01, site 01 of the UK Geoenergy Observatories (UKGEOS) Glasgow facility. This release from the British Geological Survey (BGS) contains BGS and Drillers’ logs, cased hole wireline data, a listing of archived rock chips and a descriptive report. The mine water characterisation and monitoring borehole was drilled between 11th June and 21st August 2019 (start of drilling to casing installation date) to 52 m drilled depth. The cased borehole was wireline logged and hydrogeologically tested in January 2020. Rock chip samples were taken during the drilling process and have been archived at the National Geological Repository at BGS Keyworth. Further details can be found in the accompanying report http://nora.nerc.ac.uk/id/eprint/528075, DOI https://dx.doi.org/10.5285/0d496c68-f79b-4956-8cd2-4970d1e86145.

The borehole information pack from borehole GGA04, site 02 of the UK Geoenergy Observatories (UKGEOS) Glasgow facility. This release from the British Geological Survey (BGS) contains BGS and Drillers’ logs, cased hole and open hole wireline data, a listing of archived rock chips and a descriptive report. The mine water characterisation and monitoring borehole was drilled between 28th June and 22nd October 2019 (start of drilling to casing installation date) to 53.63 m drilled depth. The cased borehole was wireline logged and hydrogeologically tested in January 2020. Rock chip samples were taken during the drilling process and have been archived at the National Geological Repository at BGS Keyworth. Further details can be found in the accompanying report http://nora.nerc.ac.uk/id/eprint/528078 DOI https://dx.doi.org/10.5285/83ab3481-45d9-475d-8814-008edc9fb1cb