Field notebook photos and scans for NERC grant Tellurium and Selenium Cycling and Supply. Various sites in Ireland, Scotland, England, North Wales, Norway, Utah, Colorado and Wyoming.

The Samburu - Marsabit Geological Mapping and Mineral Exploration Project was a joint Kenyan and British technical co-operation project, carried out by staff of the Mines and Geological Department, Ministry of Environment and Natural Resources, Kenya and staff from the British Geological Survey. The first phase of the project commenced in 1980, and covered the area between 36degrees and 38degrees E and from the equator to 2degrees N. The second phase, carried out between 1984 and 1986 covered the area between 36degrees and 38degrees E and from 2degrees N to the Ethiopian border. Sampling was carried out concurrently with geological mapping and was largely constrained by the requirements of that exercise. Little or no sampling was done in areas previously mapped by other bodies. Sampling was mainly confined to areas underlain by basement rocks of the Mozambique Belt and was very sparse over most of the Tertiary and Quaternary volcanic cover. Chemical analyses for the stream sediments were: Ag, Ba, Co, Cu, Fe, Li, Mn, Mo, Ni, Pb, Sr, and Zn. Raw data is available from the Mines and Geological Survey Department, Ministry of Environment and Natural Resources, Nairobi, Kenya. Sampling densities varied considerably across the Phase 1 project area, but generally a stream sediment sample density of one per 4 to 8 km2 and a panned concentrate density of one per 13 to 16 km2 was achieved. In the Phase 2 area, which was mainly very arid, a few samples were collected from dry stream beds, as part of a helicopter survey of the area, to provide some idea of the geochemistry of the major lithological units. Stream sediments were collected by combining grab samples from 5 to 10 points within a 10m radius of the selected site. If necessary the samples were dried before being sieved and the fine (-80 mesh B.S.) fraction retained for analysis. Heavy mineral concentrates were obtained by taking 2 to 5kg of material from the sample site and panning at the base camp, where water was available, or at the Mines and Geological Department headquarters at Nairobi.

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 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 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 National Geotechnical Properties Database contains information about site investigation reports, boreholes and samples. It contains geotechnical measurements taken over borehole intervals and on samples. Some of the data are obtained digitally from AGS files (Association of Geotechnical and Geoenvironmental Specialists - File Transfer Format), some are obtained manually from site investigation reports stored in the National Geoscience Data Centre (NGDC). The database currently contains geotechnical data from over 450 000 laboratory test samples and core descriptions, borehole observations and in-situ tests from over 96 000 boreholes extracted from over 4800 site investigation reports. The database underpins BGS geo-engineering properties and processes research and is an important information resource for answering enquiries and providing for the data needs of external customers. The distribution of data often follows major UK infrastructure developments and the coverage of BGS research, including UK rocks and soils engineering geology studies or the areas covered by ground information for sustainable development and geohazards projects. Much of the data are from site investigations for major trunk road construction schemes, often provided by Highways England (formerly the Highways Agency) and other major engineering projects. A small proportion of the data is from BGS laboratory test results. The final investigation data and information are supplied to BGS by clients, consultants and contractors either as final paper records or as Association of Geotechnical and Geoenvironmental Specialists (AGS) digital data transfer format files. AGS digital data transfer format files (.ags) are the preferred method of receiving data because they can be added to the database much more quickly and accurately than adding data by hand from paper records.

The dataset contains details of field collection of groundwater samples with use of different water intake devices and the measurement results of gaseous compounds (methane) obtained during analytical method validation performed in order to develop a methodology of groundwater sampling for analysis of dissolved gases. The dataset is not intended to be used for any site characterisation. Sampling sites were chosen based on high probability of occurrence of measureable methane content in groundwater. Furthermore, the data will be used for formal procedure to obtain the methodology accreditation from the Polish Centre for Accreditation (PCA). The dataset was created within SECURe project (Subsurface Evaluation of CCS and Unconventional Risks) - https://www.securegeoenergy.eu/. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 764531

The BGS Geochemical Baseline Survey of the Environment (G-BASE) was the national strategic geochemical mapping programme in Great Britain. The project set out to establish the chemistry of the surface environment by the collection and analysis of stream sediment, stream water and soil samples. Beginning in the late 1960s in northern Scotland and moving southwards across the country, the primary focus was mineral exploration, however, the project quickly developed to address important environmental concerns. The final G-BASE samples were collected in southern England in 2014. The outputs from the G-BASE project provide an invaluable, systematic baseline of geochemical information for Great Britain, serving as a marker of the state of the environment against which to measure future change. The routine collection of regional soil samples was introduced in 1986 in areas of poor drainage density, with an average sample density of one site per 2 square kilometres. Urban soil sampling commenced in 1991, with an average density of four samples per square kilometres, for the urban areas of Belfast, Cardiff, Corby, Coventry, Derby, Doncaster, Glasgow, Hull, Ipswich, Leicester, Lincoln, Manchester, Mansfield, Northampton, Nottingham, Peterborough, Scunthorpe, Sheffield, Swansea, Stoke, Telford, Wolverhampton and York. Topsoil samples were collected between depths of 5 cm and 20 cm, and were sieved through a 2 mm mesh and milled to less than 150 microns. The data include XRF and direct-reading optical emission spectrometry (DR-OES) analyses for some or all of the following elements: Ag, As, Ba, Bi, Br, Ca, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Ge, Hf, I, K, La, Mg, Mn, Mo, Nb, Ni, P, Pb, Rb, Sb, Sc, Se, Se, Sn, Sr, Ta, Te, Th, Ti, Tl, U, V, W, Y, Zn and Zr. Loss on Ignition (LOI) and pH (in a slurry of 0.01 M CaCl2) were also routinely determined on 50% of regional and all urban samples. For more information about accessing these samples and their analytical results, contact BGS Enquiries (enquries@bgs.ac.uk).

The BGS Geochemical Baseline Survey of the Environment (G-BASE) was the national strategic geochemical mapping programme in Great Britain. The project set out to establish the chemistry of the surface environment by the collection and analysis of stream sediment, stream water and soil samples. Beginning in the late 1960s in northern Scotland and moving southwards across the country, the primary focus was mineral exploration, however, the project quickly developed to address important environmental concerns. The final G-BASE samples were collected in southern England in 2014. The outputs from the G-BASE project provide an invaluable, systematic baseline of geochemical information for Great Britain, serving as a marker of the state of the environment against which to measure future change. Deep soil samples (also known as profile soil samples) were taken from depths of between 35 cm and 50 cm at densities of 1 sample per two square kilometres (rural / regional areas) and 4 samples per square kilometre (urban areas). The G-BASE profile soils were generally sieved to 150 microns before analysis and determined by XRF for some or all of: Ag, As, Ba, Bi, Br, Ca, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Ge, Hf, I, K, La, Mg, Mn, Mo, Nb, Ni, P, Pb, Rb, Sb, Sc, Se, Se, Sn, Sr, Ta, Te, Th, Ti, Tl, U, V, W, Y, Zn and Zr. Since 2003, for both regional and urban sampling, deep soil samples and shallow soil samples were routinely collected from the same sites, but only the shallow soil samples were submitted for chemical analysis. The deep soil samples were archived in the National Geoscience Data Centre. For more information about accessing these samples and their analytical results, contact BGS Enquiries (enquries@bgs.ac.uk).

The borehole information pack from borehole GGC01, site 10 of the UK Geoenergy Observatories (UKGEOS) Glasgow facility. This initial data release pack from BGS contains composite and digital wireline logs; drillers summary logs and prognosis; sample recovery information spreadsheets; and daily driller's borehole records. 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.