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Land Mapping

Land Mapping

​​​​​​The Land Mapping programme creates maps that depict the rocks and sub-soils of the onshore area of Ireland.  We collect new data by field surveying and borehole drilling, and combine them with existing mapping to produce map products at various scales and levels of complexity.  Our aim is a seamless, maintained, online data set of bedrock and subsoils geological mapping that is reliable, accessible and meets the requirements of all users. ​

The Land Mapping Unit activities comprise Quaternary field mapping and Bedrock data compilation, maintaining the national geotechnical database, drilling and answering public enquiries.

Explore the data and maps compiled by the Land Mapping Unit.


Research within the Land Mapping Unit mainly contributes to improving the understanding of the geology of Ireland.
We also participate in European geoscience research projects and initiatives where Irish interests are concerned. Release. Geological Survey Ireland announces Geoheritage Grant Scheme 2022/23 winners. Geological Survey Ireland announces funding for six community geoheritage projects Projects located across Waterford, Meath, Kilkenny, Clare, Mayo and Galway 04/01/2023 00:00:00 Cunningham Awards​The Cunningham College Awards recognise achievements in undergraduate mapping projects. They are awarded in memory of Mark Cunningham, former Assistant Director of Geological Survey Ireland.09/12/2022 00:00:00 Geological Heritage of Cork City14/06/2022 23:00:00 Geological Heritage of County Limerick14/06/2022 23:00:00