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. flooding areas in Dublin projected by 2100The Intergovernmental Panel on Climate Change (IPCC) published a Special Report on 25 September 2019 showing that we are heading for a worst case scenario of global mean sea level when compared with previous IPCC report. Recent work by Dr Silvia Caloca at Geological Survey Ireland shows how these expected changes could affect the Dublin coastline. 25/09/2019 23:00:00 Congress 2019 in Dublin July 25 to July 31.The INQUA (International Union for Quaternary Research) Congress is at the Dublin Convention Centre July 25 to July 31 2019.29/07/2019 23:00:00 City Geo-Environmental Challenges as addressed by Geological Survey Ireland10/07/2019 23:00:00 Quantification of salt-related sinkhole development and migration24/06/2019 23:00:00