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    1:50,000 maps showing the main geological bedrock divisions in Northern Ireland. The bedrock shown on each map comprises the bedrock geology, which represents the outcrops (at surface) and subcrops (at near-surface, beneath superficial deposits) in Northern Ireland. For each rock unit there is a brief generalised description showing the major rock group, rock type and age under the following headings. LEX_D: The name of the selected area. This can be a group, formation or igneous intrusion e.g. dyke. LEX_RCS: Map code as it appears on the published 1:250,000 map. RCS_D: The name of the dominant types of rock (lithologies) in the different areas shown on the map e.g. granite. The names of the rock types given here are often generalisations, appropriate for the large areas of geological coverage at this scale. These areas may include a number of different geological formations whose distribution can only be portrayed on more detailed geological maps. RANK: Identifies formations and groups. Min_Time_D and Max_Tim_D: The age of the rock unit in terms of periods, relatively smaller units of geological time e.g. Carboniferous, Jurassic etc. Some of the map areas include rocks with a range of ages and these are shown as such e.g. Triassic to Cretaceous. The oldest metamorphic rocks are described as Moinian and Dalradian. The rocks range in age from those deposited relatively recently, some 2 million years ago, back to ancient and highly altered Precambrian rocks over 2500 million years old. In broad terms the youngest rocks are found in the south and east of the UK, the oldest in the north and west. VERSION: Version of the data. RELEASED: Date of release/update of the data. CAUTION Because of the generalisation and simplification used in the compilation of this map, it should not be used to determine the detailed geology of any specific sites. It is best used to provide a basic understanding of the geology of the country in general, and for showing the geology of large regions where broad trends are more important than specific details. Persons interested in the detailed geology of particular sites should consult the latest large-scale maps or the Geological Survey of Northern Ireland at:- Geological Survey of Northern Ireland Colby House Stranmillis Court Belfast BT9 5BF

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    Scanned images of the records of onshore Great Britain (or near shore) site investigation reports held in the BGS archives in paper, microfilm or digital format. The entire collections in BGS Edinburgh have been scanned, but in BGS Keyworth currently only new reports received since 2002. Scanning started in 2002 and is ongoing with new records being scanned and added to the collection. Images are stored in TIFF format (Tagged Image File Format). Indexed on the site investigation database and the boreholes within the report, and their images, are associated via the borehole database.

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    The LIMS (Laboratory Information Management System) holds information about the sample preparation and chemical analysis of samples (from internal and external customers) handled by the BGS chemistry laboratories at Keyworth. Data covers X-ray fluorescence spectrometry (XRFS) analyses, loss on ignition (LOI), pH for GBASE. Coverage will be extended to other BGS laboratories with time. It is not intended that the results of chemical analysis will remain on the system indefinitely, data for internal customers being passed to corporate or project datasets, data for external clients being archived.

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    Scanned images of the records of all onshore Great Britain (or near shore) boreholes, trial pits, shafts and wells held in the BGS archives in either paper, microfilm or digital format. The records range from simple single page lithological logs through to hydrocarbon completion reports. Current collection over 1million records with 50,000 new records added per annum. Scanning started in 2002 and is ongoing with new records being scanned and added to the collection.

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    This dataset contains the collated wireline logs, stratigraphy and core analysis of the three boreholes drill as part of the publicly funded Rapid Global Geological Events Project (RGGE) which ran between 1995-1998. The aim of the RGGE project was to identify the effects of climatic changes on modern sediments. The project focused on the Kimmeridge Clay due to its unbroken sequence of fossiliferous marine mudstones. These mudstones have compositional variations in organic content, minerology, fauna and clay content which reflect changes in both the climate and sea level. Over the course of the project the entire sequence of the Kimmeridge Clay was cored across three boreholes, two at Swanworth Quarry and one at Metherhills.

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    This data set is an inventory of aerial photographs held at BGS, Murchison House office and consists of a MS Excel spreadsheet containing 11 worksheets. Each worksheet contains information pertaining to the different sub-collections within the collection (9 worksheets of aerial photographs, one for aerial photograph scans, one for satellite imagery). Quality and coverage of metadata varies from worksheet to worksheet, depending on the size of the sub-collection, its pre-existing organisation, and the way in which the sub-collection was brought together (if it was not a complete entity when the inventory was started). Areal extent ranges from Shetland in the N (1200000) to the southern Lake District in the S (480000) and from Barra in the W (65000) to Stockton-on-Tees in the E (450000). By late 2001 all photos (except those being worked on by cuurently by staff) were catalogued in the inventory spreadsheet. By late 2003, the inventory spreadsheet had been updated with newly purchased and newly discovered photos as well as modified to include details of digital holdings and satellite imagery.

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    Superficial Geology (250k) This layer shows the superficial (drift) geology of Northern Ireland at 1:250,000 scale. For each rock unit there is a brief generalised description under the following headings. LEX_D: Description of the selected polygon. LEX_RCS: Map code as it appears on the published 1:250,000 map. RCS_D: Decription of the deposit. VERSION: Version of the data. RELEASED: Date of release/update of the data. Persons interested in the detailed geology of particular sites should consult the latest large-scale maps or the Geological Survey of Northern Ireland at:- Geological Survey of Northern Ireland Colby House Stranmillis Court Belfast BT9 5BF

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    1:50,000 maps showing the main geological superficial divisions in Northern Ireland. This series shows the superficial (drift) geology of Northern Ireland at 1:50,000 scale. For each rock unit there is a brief generalised description under the following headings. LEX_D: Description of the selected polygon. LEX_RCS: Map code as it appears on the published 1:250,000 map. RCS_D: Decription of the deposit. VERSION: Version of the data. RELEASED: Date of release/update of the data. Persons interested in the detailed geology of particular sites should consult the latest large-scale maps or the Geological Survey of Northern Ireland at:- Geological Survey of Northern Ireland Colby House Stranmillis Court Belfast BT9 5BF

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    Primary Geological Data resulting from Open Cast Coal exploration in British coalfield areas. Maps showing the site outlines of opencast coal prospecting sites annotated with site reference number. Sites date back to the 1940s. Outlines drawn on 1:25000 scale topographic bases. The majority of the collection was deposited with the National Geological Records Centre by the Coal Authority in July 2001.

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    The Index to the Primary Geological Data resulting from Open Cast Coal exploration. The index lists the content of the boxes of data, including reports, interpretations and records of research in British coalfield areas. The Index lists information on past and current workings and for future prospects. The majority of the collection was deposited with the National Geological Records Centre by the Coal Authority in July 2001, but a small number of BGS records have been added subsequently.