This layer of the Map based index (GeoIndex) shows the location of records of boreholes, shafts and wells from all forms of drilling and site investigation work. Some 850,000 records dating back over 200 years and ranging from one to several thousand metres deep. Currently some 50,000 new records are being added to the collection each year. The dataset available via the GeoIndex is a snapshot, taken at a particular date, of the Single Onshore Borehole Index. Although the GeoIndex is updated at regular intervals more information may be available than is shown. This layer is only available at specific zoom levels. Please zoom to a larger scale to interrogate the map.

This layer of the Map based index (GeoIndex) shows the location of registered samples of drillcore and washed cuttings from onshore boreholes drilled in UK by BGS, commercial and public bodies, representing almost 10,000 boreholes. There is also a drillcore collection taken from onshore boreholes drilled in England and Wales by the BGS and commercial and public bodies. This layer is only available at specific zoom levels. Please zoom to a larger scale to interrogate the map.

This layer of the map based index (GeoIndex) providex an index to 17,500 borehole rock samples (drillcore) from the Mineral Reconnaissance Programme (MRP) and related studies. The UK Government's Department of Trade and Industry (DTI) funded BGS to provide baseline information on areas prospective for the occurrence of metallic minerals in Great Britain. This programme, known as the MRP, ran continuously from 1973 to 1997 and covered particular locations across Great Britain. It was designed to stimulate private sector exploration and to encourage the development of Britain's indigenous mineral resources. Under the programme a number of boreholes were drilled to gather information. This layer is only available at specific zoom levels. Please zoom to a larger scale to interrogate the map.

BGS has drilled almost 600 boreholes to prove seismic interpretations of the marine Quaternary geology and bedrock from the UK Continental Shelf (UKCS). The collection also includes additional third party data and has assisted in the creation of BGS Marine Geology Maps. The boreholes penetrate beneath the sea bed to depths ranging from about 10m to over 300m depending on the target depth or technical problems associated with drilling the borehole. The data includes descriptive geological core logs and data which has been captured from these and in some cases natural gamma logs. A variety of analyses has been conducted on the core material such as Particle Size Analysis, micropalaeontological, geotechnical, palaeomagnetic and age dating. Core material are managed as part of the BGS Materials collection and are available for examination and subsampling. The data are stored as part of the National Geoscience Data Centre (NGDC) and the Marine Environmental Data and Information Network (MEDIN) Data Archive Centre (DAC) for Geology and Geophysics. Data are delivered via the BGS Offshore GeoIndex http://www.bgs.ac.uk/GeoIndex/offshore.htm. The activity and scan layers contains location information, metadata and links to scanned borehole logs, and the geological data layers contain observations and/or measurements as digital values. The data are applicable to a wide range of uses including environmental, geotechnical and geological studies. Reference: Fannin, NGT. (1989) Offshore Investigations 1966-87 British Geological Survey Technical Report WB/89/02, British Geological Survey.

This layer of the Map based index (GeoIndex) shows the location of records of boreholes, shafts and wells from all forms of drilling and site investigation work. Some 850,000 records dating back over 200 years and ranging from one to several thousand metres deep. Currently some 50,000 new records are being added to the collection each year. The dataset available via the GeoIndex is a snapshot, taken at a particular date, of the Single Onshore Borehole Index. Although the GeoIndex is updated at regular intervals more information may be available than is shown.

This layer of the map based index (GeoIndex) shows the location of onshore UK boreholes known to BGS that have digital or paper geophysical borehole logs. The details given for each borehole are, the name of the borehole, the grid reference and the format, ie. paper or digital. Scattered distribution of boreholes, locally dense coverage, few logs from Scotland. The GeoIndex is updated at regular intervals but more information may be available than is shown at any one time.

             This layer is only available at specific zoom levels. Please zoom to a larger scale to interrogate the map.

The British Geological Survey (BGS) is a world-leading geological survey and global geoscience organisation, focused on public-good science for government and research to understand earth and environmental processes. We are the UK’s premier provider of objective and authoritative geoscientific data, information and knowledge to help society to use its natural resources responsibly, manage environmental change and be resilient to environmental hazards. For more information see: https://www.bgs.ac.uk/The Single Onshore Borehole Index (SOBI) is an index of over 1 million boreholes, shafts and wells and references collections of digital and analogue records from all forms of drilling and site investigation work held by the BGS. The index covers onshore and near shore boreholes from Great Britain dating back to at least 1790 and ranging from one to several thousand metres deep. Some 50,000 new boreholes are added each year. The majority of the records contain written descriptions of the ground encountered. The SOBI index database originated in 1988 from a number of existing tables and from data input from a variety of coding forms. Most non-confidential boreholes link to a scan of the borehole record. For more information see: https://www.bgs.ac.uk/information-hub/borehole-recordsSOBI points are visible when zoomed in beyond scales of 1:175,000SOBI is also available on the BGS website via the GeoIndex or as a WMSFor more information contact: enquiries@bgs.ac.uk

The map shows the localities where samples that form part of the BGS rock collections have been taken. Many of these samples are from surface exposure, and were collected by BGS geologists during the course of geological mapping programmes. Others are from onshore boreholes or from mine and quarry workings. The principal collections are the E (England and Wales), S (Scotland), N (continuation of the S collection) and the MR (miscellaneous). The collections, which are held at the BGS offices at Keyworth (Nottingham) and Edinburgh, comprise both hand specimens and thin sections, although in individual samples either may not be immediately available. Users may also note that the BGS holds major collections of borehole cores and hand specimens as well as over a million palaeontological samples. The Britrocks database provides an index to these collections. With over 120,000 records, it now holds data for some 70% of the entire collections, including the UK samples shown in this application as well as rocks from overseas locations and reference minerals. The collections are continuously being added to and sample records from archived registers are also being copied into the electronic database. Map coverage is thin in some areas where copying from original paper registers has not been completed. Further information on Britrocks samples in these and other areas can be obtained from the Chief Curator at the BGS Keyworth (Nottingham) office or from the rock curator at the BGS Murchison House (Edinburgh) office.

"The BGS holds over a million borehole records and these can be viewed online in the dedicated borehole viewer (https://www.bgs.ac.uk/data/boreholescans/home.html). Coverage across Great Britain is clustered (generally within urban centres and corridors). This map only shows borehole data that has been captured to date (additional data may exist).

             Boreholes are drilled for assessing ground conditions for construction, water and mineral resources. They are generally not
             drilled for the purpose of recording soil information. However, many boreholes note the depth of deposits classed as 'Topsoil'
             and so BGS has started to compile a dataset of reported 'Topsoil' depths. Most records suggest that the driller has identified
             a generic 'Topsoil' layer. Some records provide further details that indicate the topsoil layer has differing properties,
             or is not solely a topsoil layer but a combination of soil and other materials (e.g. parent material, peat and artificial
             ground). Users should therefore be aware that the term 'topsoil', as used in borehole records, should be regarded as a very
             simple description of what soil-scientists might regard as a combination of O, A, E and possibly B horizons."

Index to the statutory notifications of the intention to drill any boreholes, shafts or wells under the Mining Industry Act 1926 or the Water Resources Act 1991 for Great Britain. Index complete for all notifications since 1952, but record data will vary. Complete and current entries generally accurate to 10 metres . Earlier entries to map sheet level only. Digital capture from October 1988.

Borehole data collected from British Geological Society - BGS historic maps. Boreholes expressed as Point data from known or historic knowledge of Boreholes

The map based index includes outlines for some 8,000 opencast coal prospecting sites dating from the 1940s until the mid 1990s. The index leads to information on the records of some 1 million boreholes (additional to those shown in the Borehole Records layer) drilled during site exploration and also the accompanying plans and other data, all filed in 3,618 boxes. The sites include those that have been drilled and not worked and also those that have been exploited. The original data, hardcopy maps, were received from the Coal Authority in 2001. This layer is only available at specific zoom levels. Please zoom to a larger scale to interrogate the map.

This layer of the map based index (GeoIndex) shows the location of site reports covering a wide range of drilling and site investigation work. Some 2000 reports include the logs from over 10 000 boreholes in addition to those held in the borehole index. The rectangles shown are drawn using the SW and NE corners of the site maps. This layer is only available at specific zoom levels. Please zoom to a larger scale to interrogate the map.

These data show the location of onshore boreholes registered by the Geological Survey of Northern Ireland that have digital or paper borehole logs. The details given for each borehole includes: the name of the borehole, its unique identifier, the grid reference and depth. Where scans of the boreholes are available to view online a URL is provided in the attribute table. This layer is updated at irregular intervals and the latest data is from June 2023.

This is a digital version of the paper based 1:1M scale Offshore Quaternary map, North and South sheets. Customers should be aware that, given the age of the paper based maps, the digital version is not quality assured and BGS can accept no liability for the information held on the digital map. In addition, published 1:250,000 Quaternary maps are available. These contain more detailed subdivision of the Quaternary succession. The original paper based map covers the UK Continental shelf. The paper map is symbolised using lithology and chronology. The lithological boundaries were compiled from the data published in the BGS 1:250,000 Quaternary Geology map series and from revised interpretation of core and borehole data. Core and borehole sites are commonly 5 to 20 km apart, thus the lithological divisions are generalised. The formations and sequences identified by BGS have been grouped into Quaternary age ranges. The geological codes assigned to the digital version of the map have been compiled using the key information held on the paper map. The LEX-ROCK style codes combine the lithology and chronology and have been subject to the standard BGS approval process.

This sampling survey, aboard the drilling vessel Surveyor owned by Heerema Marine Contractors, was part of the British Geological Survey (BGS) Regional Mapping Programme and aimed to drill boreholes in areas covered by Quaternary sediments too thick for vibrocoring or gravity coring methods. The results would aid with the interpretation of shallow and deep seismic records used in the compilation of geological maps. The drill system was heave compensated with a derrick mounted over a moonpool and boreholes were drilled at seven sites.

"The simplified texture classifications are derived from measured soil thicknesses taken from archive borehole records held by BGS (see the BGS Soil-sample Depth dataset in the map viewer: http://mapapps2.bgs.ac.uk/ukso/home.html?layers=SamplesDepth). The thicknesses are compared and collated with the expected engineering strength classification of their underlying soil-parent material type to show a map of distribution of the classes; expert judgment has been used to estimate a thickness class where borehole data is not available). Note that the map uses combinations of terms that refer to: Deep soils, Intermediate soils and Shallow soils (see table below). As a rule of thumb, these categories are based on the ability to manually dig (with a spade) without being hindered by a substrate that is too strong to excavate (i.e. layers of solid rock, dense gravel, or very stiff clays). An example of a deep soil would be one developed over unconsolidated, clayey Quaternary deposits, and an example of a shallow soil would be one found in areas underlain by chalk or limestone. Users should note that land management practices and natural weathering and accumulation (or erosion) processes of soil materials play a significant role in controlling soil thickness (it has not been possible to factor in these influences within the scope of this dataset) and so the classes shown in this dataset should be regarded as 'indicative'."

The BGS Hydrogeological Maps of Scotland data product is comprised of three datasets: Bedrock Aquifer Productivity (Scotland); Superficial Aquifer Productivity (Scotland); and Groundwater Vulnerability (Scotland). Aquifer productivity is a measure of the potential of aquifers to sustain a borehole water supply. The Aquifer Productivity (Scotland) datasets indicate the location and productivity of bedrock and superficial aquifers across Scotland, and their groundwater flow characteristics. The Groundwater Vulnerability (Scotland) dataset shows the relative vulnerability of groundwater to contamination across Scotland. The BGS Hydrogeological Maps of Scotland data product is developed as a tool to support groundwater resource management. It may be useful to anyone interested in learning more about, assessing or managing groundwater resources across Scotland. The datasets within the product are delivered at 1: 100 000 scale.

GeoScholar is a set of free geological data - available in GIS format - for UK universities and the higher education sector, to support teaching and learning within the geosciences. The dataset includes digital geological map data from BGS, aerial photos from Infoterra, NEXTmap digital terrain model from Intermap Technologies, borehole data and their corresponding logs, several BGS geological map sheets. Each Geoscholar teaching package will include 12 different geographical regions, including Assynt, Coniston and South West Wales.

An on-line interactive map showing borehole data for Germany. Coverage is for selected regions only. The data shows locations depths and owners of boreholes but not geological information. The borehole location map contains the topographic backdrop map of different sources (depending on the scale factor) with symbols for borehole locations shown in scales better than 1:100000. The best details are shown on the basis of the 1:50000 scale map series (TK50). All backdrop maps originate from Bundesamt für Kartographie und Geodäsie (BKG). More detailed maps (e.g. TK25 or DGK5) are not available in this application. The connected database does contain master data sets for all boreholes. Further freely available details, e.g. strata or groundwater data, are provided via WFS technology and are displayed in the map client. Non-freely available data can be ordered by contacting the State Geological Surveys.

Website: https://www.bgr.bund.de/EN/Themen/Geodatenmanagement/Bohrpunktkarte-Deutschland/bohrpunktkarte-deutschland_node_en.html