9fc79e94-a9c9-3e5c-e044-0003ba9b0d98 English dataset British Geological Survey +44 28 9038 8462 Dundonald House, Upper Newtownards Road BELFAST BT4 3SB United Kingdom gsni@detini.gov.uk pointOfContact 2026-04-05 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13605555 TM65 / Irish National Grid (EPSG::29900) GSNI 50K Bedrock 2001 creation http://data.bgs.ac.uk/id/dataHolding/13605555 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 Enquiries British Geological Survey 028 9038 8462 028 9038 8461 Dundonald House, Upper Newtownards Road BELFAST BT4 3SB United Kingdom gsni@economy-ni.gov.uk distributor Enquiries British Geological Survey 028 9038 8462 028 9038 8461 Dundonald House, Upper Newtownards Road BELFAST BT4 3SB United Kingdom gsni@economy-ni.gov.uk pointOfContact Enquiries British Geological Survey 028 9038 8462 028 9038 8461 Dundonald House, Upper Newtownards Road BELFAST BT4 3SB United Kingdom gsni@economy-ni.gov.uk user continual https://resources.bgs.ac.uk/images/geonetworkThumbs/9fc79e94-a9c9-3e5c-e044-0003ba9b0d98.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication General geology Field geology Geology BGS Thesaurus of Geosciences 2022 revision UK Location (INSPIRE) dataCentre NERC_DDC otherRestrictions license Copyright acknowledgement required: Reproduced from the Geological Survey of Northern Ireland, with the permission of the Director.© Crown Copyright. formal permission to do something. Copyright acknowledgement required: Reproduced from the Geological Survey of Northern Ireland, with the permission of the Director.© Crown Copyright. otherRestrictions The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused. formal permission to do something. Copyright acknowledgement required: Reproduced from the Geological Survey of Northern Ireland, with the permission of the Director.© Crown Copyright. limitation not listed. Copyright acknowledgement required: Reproduced from the Geological Survey of Northern Ireland, with the permission of the Director.© Crown Copyright. grid 50000 English geoscientificInformation ISO 3166_1 alpha-3 2009 revision NIR British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation NORTHERN IRELAND [id=181000] -10.6400 -5.4100 51.3600 55.4400 2010 Enquiries British Geological Survey 028 9038 8462 028 9038 8461 Dundonald House, Upper Newtownards Road BELFAST BT4 3SB United Kingdom gsni@economy-ni.gov.uk distributor https://mapapps2.bgs.ac.uk/GSNI_Geoindex/home.html WWW:LINK-1.0-http--link GSNI GeoIndex search dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 publication See the referenced specification false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false the bedrock geology represents the outcrops (at surface) and subcrops (at near-surface, beneath superficial deposits) in Northern Ireland.